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4,266 Kotlin Java jobs in the United Kingdom

Java Developer Kotlin AWS - Trading

W6 Hammersmith, London Client Server

Posted 1 day ago

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Job Description

Java Developer / Backend Software Engineer (Java 17 Kotlin AWS) London / WFH to £85knAre you a technologist Java Developer with Kotlin skills looking to progress your career, working with a modern cloud based infrastructure and a range of technology?nYou could be joining a hugely successful and growing commodities trading firm that specialise in trading silver and gold.nAs a Java Developer you'll collaborate with the Lead Engineer on the core trading platform as the company looks to scale the platform and introduce new features. There's an emphasis on code quality; designing and developing highly complex web based trading platforms working across the full development lifecycle.nThe technology stack includes Java 17, Kotlin, Spring Boot and AWS amongst others; you'll be encouraged to expand your skillset using the latest technologies and choosing the best tool for the job in a friendly Agile team environment.nWFH Policy:nYou'll join the team in the West London office with flexibility to work from home twice a week.nAbout you:nYou are degree educated, having achieved a 2.1 or above gained in Computer Science (or similar STEM discipline) from a top tier university (e.g. Russel Group) backed by A's at A-levelnYou have strong Java and Kotlin development experiencenYou have experience with Agile processes and TDDnYou have a thorough understanding of Computer Science fundamentals such as OOP, Design Patterns, Data Structures, AlgorithmsnOther tech in the stack includes Scala, React, Spring, Oracle, Redis, Kubernetes, Docker and Linux so previous exposure to any of these would be beneficialnYou're collaborative with good communication skillsnWhat's in it for you:nAs a Java Developer / Backend Software Engineer you will earn:nSalary to £85knBonusnHybrid working (x3 days in London per week)nLearning and career development opportunitiesnApply now

to find out more about this Java Developer / Backend Software Engineer (Java 17 Kotlin AWS) opportunity.nAt Client Server we believe in a diverse workplace that allows people to play to their strengths and continually learn. We're an equal opportunities employer whose people come from all walks of life and will never discriminate based on race, colour, religion, sex, gender identity or expression, sexual orientation, national origin, genetics, disability, age, or veteran status. The clients we work with share our values.

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Lead UX/UI Designer - Mobile Application Development

NE1 4AG Newcastle upon Tyne, North East £60000 Annually WhatJobs

Posted 3 days ago

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Job Description

full-time

Our client, a dynamic and rapidly expanding technology firm, is seeking a visionary Lead UX/UI Designer to spearhead the design of their innovative mobile applications. This role is based in our modern offices in Newcastle upon Tyne, Tyne and Wear, UK , with a hybrid work arrangement offering a blend of in-office collaboration and remote flexibility. You will be responsible for the entire user experience and interface design process, from initial concept development and user research to the final polished designs for iOS and Android platforms. This includes creating wireframes, prototypes, user flows, and high-fidelity mockups that are both intuitive and visually compelling. The ideal candidate will possess a deep understanding of user-centered design principles, mobile design patterns, and the latest UI/UX trends. You will lead a small team of designers, providing mentorship and guidance, and fostering a culture of creativity and excellence. Collaboration is key; you will work closely with product managers, developers, and stakeholders to translate complex requirements into elegant and user-friendly solutions. Responsibilities include conducting user research, usability testing, and gathering feedback to iterate on designs. You will also define and maintain design systems, ensuring consistency across all product touchpoints. A strong portfolio showcasing exceptional UX/UI design work for mobile applications is essential, demonstrating your ability to solve complex design problems and create engaging user journeys. Proficiency in industry-standard design tools such as Figma, Sketch, Adobe Creative Suite, and prototyping tools (e.g., InVision, ProtoPie) is required. Excellent communication, presentation, and interpersonal skills are vital for articulating design decisions and collaborating effectively with cross-functional teams. We are looking for a creative problem-solver with a passion for crafting delightful and impactful digital experiences that drive user engagement and business success.

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Software Engineer / Senior Software Engineer

Welwyn, Eastern Roche

Posted 2 days ago

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Job Description

At Roche you can show up as yourself, embraced for the unique qualities you bring. Our culture encourages personal expression, open dialogue, and genuine connections, where you are valued, accepted and respected for who you are, allowing you to thrive both personally and professionally. This is how we aim to prevent, stop and cure diseases and ensure everyone has access to healthcare today and for generations to come. Join Roche, where every voice matters.
**The Position**
A healthier future. It's what drives us to innovate. To continuously advance science and ensure everyone has access to the healthcare they need today and for generations to come. Creating a world where we all have more time with the people we love. That's what makes us Roche.
Advances in AI, data and computational sciences are transforming drug discovery and development. Roche's Research and Early Development organizations at Genentech (gRED) and Pharma (pRED) have demonstrated how these technologies accelerate R&D, leveraging data and novel computational models to drive impact. Seamless data sharing and access to models across gRED and pRED are essential to maximising these opportunities. The Computational Sciences Center of Excellence (CS CoE) is a strategic, unified group whose goal is to harness the transformative power of data and Artificial Intelligence (AI) to assist our scientists in both pRED and gRED to deliver more innovative and life-changing medicines for patients worldwide.
Within the CS CoE organisation, the Data and Digital Catalyst (DDC) organization leads the modernization of our computational and data ecosystems by integrating digital technologies across Research and Early Development to empower stakeholders, advance data-driven science and accelerate decision-making.
The Solutions team within the DDC Organization develops modernized and interconnected computational and data ecosystems. The Data Ecosystem is foundational to building solutions that accelerate the work done by our Computational and Bench Scientists and enable ML/AI tool creation and adoption. Our team specializes in building Data Pipelines and Applications for data acquisition, collection, storage, transformation, linkage and sharing.
As a Software Engineer on our Solutions Engineering team, you will build robust, scalable, and reusable capabilities for our shared data platform. You will work closely with Data Engineers, Product Leaders, and scientific partners to design and implement systems that unlock the potential of our diverse scientific data. Your work will directly contribute to accelerating the discovery and development of life-changing treatments for patients by building the modern ecosystem that captures, moves, and prepares scientific data for analysis.
**The Opportunity**
+ Ensure technical excellence by delivering innovative, best-in-class data flows and pipelines across key scientific domains.
+ Promote the adoption of key trends and technologies by applying an Open Source, Cloud First, API First, and AI First approach to problem-solving.
+ Improve our data workflows and application architecture by leveraging standard patterns like microservices and event-driven design.
+ Integrate diverse data sets to power AI/ML, Natural Language Search, and downstream visualization and analytics tools.
+ Facilitate the implementation of cutting-edge AI models that take advantage of advances in machine learning.
+ Influence technical decisions around data workflows and application development in collaboration with key partners.
+ Learn and deeply understand our Data Ecosystem to drive continuous improvement and innovation.
**Who You Are**
You are a passionate engineer who cares about technical and product excellence, with a drive to build highly usable solutions. You thrive in a collaborative environment, leveraging modern development practices to translate complex challenges into effective technology solutions.
You bring the following qualifications:
+ A Bachelor's degree in Computer Science or a similar technical field, or equivalent experience, plus relevant software engineering experience.
+ Experience in full-stack development, with working knowledge of frontend (e.g., JavaScript) and backend (e.g., Python, Java) technologies.
+ Experience with databases, data analytics (SQL/NoSQL, ETL/ELT), and APIs (REST, GraphQL).
+ Experience working on cloud-native architectures in a public cloud environment, ideally AWS.
+ Strong oral and written communication skills and the ability to think strategically to optimize for long-term goals.
#ComputationCoE
**Who we are**
A healthier future drives us to innovate. Together, more than 100'000 employees across the globe are dedicated to advance science, ensuring everyone has access to healthcare today and for generations to come. Our efforts result in more than 26 million people treated with our medicines and over 30 billion tests conducted using our Diagnostics products. We empower each other to explore new possibilities, foster creativity, and keep our ambitions high, so we can deliver life-changing healthcare solutions that make a global impact.
Let's build a healthier future, together.
The statements herein are intended to describe the general nature and level of work being performed by employees, and are not to be construed as an exhaustive list of responsibilities, duties, and skills required of personnel so classified. Furthermore, they do not establish a contract for employment and are subject to change at the discretion of Roche Products Ltd. At Roche Products we believe diversity drives innovation and we are committed to building a diverse and flexible working environment. All qualified applicants will receive consideration for employment without regard to race, religion or belief, sex, gender reassignment, sexual orientation, marriage and civil partnership, pregnancy and maternity, disability or age. We recognise the importance of flexible working and will review all applicants' requests with care. At Roche difference is valued and we are proud to be an equal opportunity employer where you are encouraged to bring your whole self to work.

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Software Engineer

UK Knutsford, North West Barclays Bank PLC

Posted today

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Job Description

permanent

Join us at Barclays as a Software Engineer. To design, build, and maintain infrastructure platforms that support our applications and data systems across hardware, software, networks, and cloud environments. You'll ensure these systems are reliable, scalable, and secure by applying software engineering techniques, automation, and best practices in incident response to drive performance, availability, and resilience. To be successful as a Software Engineer, you should have experience with: Infrastructure automation to improve efficiency. Python programming for developing tools, scripts, and automation workflows. Oracle or Ansible for managing enterprise databases or automating configuration and deployment. Some other highly valued skills may include: Using Jira to track and manage development work effectively. CI/CD pipeline development experience using GitLab to streamline code integration and deployment. You may be assessed on the key critical skills relevant for success in role, such as risk and controls, change and transformation, business acumen strategic thinking and digital and technology, as well as job-specific technical skills. This role is based in Knutsford. Purpose of the role To build and maintain infrastructure platforms and products that support applications and data systems, using hardware, software, networks, and cloud computing platforms as required with the aim of ensuring that the infrastructure is reliable, scalable, and secure. Ensure the reliability, availability, and scalability of the systems, platforms, and technology through the application of software engineering techniques, automation, and best practices in incident response. Accountabilities Build Engineering: Development, delivery, and maintenance of high-quality infrastructure solutions to fulfil business requirements ensuring measurable reliability, performance, availability, and ease of use. Including the identification of the appropriate technologies and solutions to meet business, optimisation, and resourcing requirements. Incident Management: Monitoring of IT infrastructure and system performance to measure, identify, address, and resolve any potential issues, vulnerabilities, or outages. Use of data to drive down mean time to resolution. Automation: Development and implementation of automated tasks and processes to improve efficiency and reduce manual intervention, utilising software scripting/coding disciplines. Security: Implementation of a secure configuration and measures to protect infrastructure against cyber-attacks, vulnerabilities, and other security threats, including protection of hardware, software, and data from unauthorised access. Teamwork: Cross-functional collaboration with product managers, architects, and other engineers to define IT Infrastructure requirements, devise solutions, and ensure seamless integration and alignment with business objectives via a data driven approach. Learning: Stay informed of industry technology trends and innovations, and actively contribute to the organization's technology communities to foster a culture of technical excellence and growth. Assistant Vice President Expectations To advise and influence decision making, contribute to policy development and take responsibility for operational effectiveness. Collaborate closely with other functions/ business divisions. Lead a team performing complex tasks, using well developed professional knowledge and skills to deliver on work that impacts the whole business function. Set objectives and coach employees in pursuit of those objectives, appraisal of performance relative to objectives and determination of reward outcomes If the position has leadership responsibilities, People Leaders are expected to demonstrate a clear set of leadership behaviours to create an environment for colleagues to thrive and deliver to a consistently excellent standard. The four LEAD behaviours are: L – Listen and be authentic, E – Energise and inspire, A – Align across the enterprise, D – Develop others. OR for an individual contributor, they will lead collaborative assignments and guide team members through structured assignments, identify the need for the inclusion of other areas of specialisation to complete assignments. They will identify new directions for assignments and/ or projects, identifying a combination of cross functional methodologies or practices to meet required outcomes. Consult on complex issues; providing advice to People Leaders to support the resolution of escalated issues. Identify ways to mitigate risk and developing new policies/procedures in support of the control and governance agenda. Take ownership for managing risk and strengthening controls in relation to the work done. Perform work that is closely related to that of other areas, which requires understanding of how areas coordinate and contribute to the achievement of the objectives of the organisation sub-function. Collaborate with other areas of work, for business aligned support areas to keep up to speed with business activity and the business strategy. Engage in complex analysis of data from multiple sources of information, internal and external sources such as procedures and practises (in other areas, teams, companies, etc).to solve problems creatively and effectively. Communicate complex information. 'Complex' information could include sensitive information or information that is difficult to communicate because of its content or its audience. Influence or convince stakeholders to achieve outcomes. All colleagues will be expected to demonstrate the Barclays Values of Respect, Integrity, Service, Excellence and Stewardship – our moral compass, helping us do what we believe is right. They will also be expected to demonstrate the Barclays Mindset – to Empower, Challenge and Drive – the operating manual for how we behave.

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Software Engineer

Tyne and Wear, North East £41 - £55 Hourly Carbon 60

Posted 2 days ago

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Job Description

contract

Carbon60 is currently looking for a Software Engineer to join a client of ours based in Newcastle. Our client is pronoun in the aviation, defence, and space sectors. They are looking for a Software Engineer to join their team on a contractual basis. This role will be 12 months, working 60% onsite.

As a Software Engineer you will be responsible for developing robust and efficient code using Java and related technologies. Your primary duties will include:

* Developing reusable patterns and encouraging innovation to enhance team velocity
* Contributing to quality assurance by writing unit and automated tests
* Conducting design and code reviews to ensure adherence to coding best practices, unit testing, security, and scalability guidelines
* Ensuring code is well-documented and sharing knowledge of implemented solutions
* Participating in agile-based activities, such as sprint planning, reviews, and daily stand-ups

To be successful in this role, you should possess the following essential skills and qualifications:

* Proficiency in Java and cloud services development
* Expertise in unit testing
* Desirable skills include DevSecOps awareness, experience with tools like Tekton, ArgoCD, and SonarQube, as well as familiarity with Red Hat OpenShift or Kubernetes, and the Quarkus framework
* Front-end development experience using Angular is also a plus

If you are interetsred in this position, please apply with an updated CV and one of our ocnsultants will be in touch.

Carbon60, Lorien & SRG - The Impellam Group STEM Portfolio are acting as an Employment Business in relation to this vacancy.

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Software Engineer

Birmingham, West Midlands £55000 - £65000 Annually SF Recruitment

Posted 2 days ago

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Job Description

permanent

Software Engineer with strong commercial node.js and Typescript experience is sought on a fully remote basis by an international technology company.

Working at the forefront of B2B technology asset management this Software Engineer will play a key role in building a bespoke enterprise grade ERP (including implementing AI software solutions) that will drive business success across 47 sites globally.

This role would suit a software engineer with at least two years commercial experience who is looking for a clear progression pathway and the autonomy to deliver a best in class, market leading, greenfield solution that will drive huge business growth.

In return this Software Engineer can expect an autonomous, knowledge share driven culture with a team of seven alongside excellent career development and training opportunities within this market leading organization.

This Software Engineer should have most of the following key skills:

- Solid commercial node.js
- Strong Typescript skills
- Understanding of cloud deployment (ideally AWS)
- PostgreSQL database knowledge would be useful
- Strong Test driven development skills with the ability to write unit tests
- Third party API development skills
- Solid system design understanding - Serverless, Headless, microservices etc
- Any automation skills would be useful - Docker, Kubernetes etc
- Any experience working with ERP solutions would be a real plus
- A positive, engaging personality who understands the business impact of the software they are writing

This software Engineer will receive:

- Starting salary of up to £65,000
- Long term remote working with one day a month in the office
- Extensive personal development scheme
- 25 days holiday
- Private pension & healthcare
- Fast paced, autonomous culture with extensive growth potential
- Regular remuneration reviews

So if you are a Software Engineer who wants to join a market leading business with innovation at its core please apply now to be considered

Software Engineer
Fully remote
AWS, ERP, system architecture, JavaScript, Typescript, node, PostgreSQL,

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Software Engineer

London, London £55000 - £60000 Annually Tria

Posted 2 days ago

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Job Description

permanent

Software Engineer
Hybrid - London - 3 days a week
55,000 - 60,000 + Bonus & Benefits

Our client is a FTSE100 market leading organisation who are looking for a Software Engineer to join their growing digital solutions team. You'll be involved in ensuring solutions are scalable, secure and widely adopted across the business.

You'll need to demonstrate previous experience in using cloud services and modern software development. You'll also be responsible for promoting best practices across the wider company and supporting teams in adopting them.

We're looking for candidates who possess the following:

Experience with Azure Ecosystem
Working on creating Proof of Concepts and prototypes
Interest in emerging areas such as AI or automation
Excellent stakeholder communication skills

If you meet some of the above requirements please apply for more information.

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Software Engineer

Hampshire, South East £37 - £50 Hourly Carbon 60

Posted 2 days ago

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Job Description

contract

Please note you must be able to pass Security Clearance for this position.

Carbon60 is currently looking for a Software Engineer to join their client based in Portsmouth in their Space sector. This is a contract role lasting 12 months with the possible of extension.

As a Software Engineer, you will contribute to software design and implementation activities through all stages of the project development life cycle.

Your responsibilities will include:

- Assisting with defining or amending requirements in compliance with quality criteria
- Determining interface requirements
- Implementing design documents and software changes, including new and expanded functionality
- Developing software to appropriate coding standards
- Ensuring software meets requirements using appropriate test/inspection methods
- Utilising agile development tools such as JIRA, Confluence, Enterprise Architect, and Git

To be successful in this role, you will need:

- Extensive experience in C++ programming
- Knowledge of working with Windows applications, preferably with experience in MFC and C#
- Desirable: Experience in real-time control coding using ADA

This is an excellent opportunity to join a dynamic and innovative company that values its employees. The role offers a competitive pay rate of 37.38 per hour (PAYE) or 50 per hour (Umbrella).

If you are interested in this position and would like to know more, please apply with an updated CV and one of our consultants will be in touch.

Carbon60, Lorien & SRG - The Impellam Group STEM Portfolio are acting as an Employment Business in relation to this vacancy.

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Software Engineer

Newcastle upon Tyne, North East The Thrive Team Limited

Posted 3 days ago

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Job Description

permanent

Software Engineer
Newcastle upon Tyne, Tyne & Wear
Competitive remuneration package offered.
Salary negotiable and dependent on experience .
An opportunity to join an exciting organisation as a Software Engineer.
In the current day environment innovation in the military plays a key role and our R&D team sits in the heart of it. The team's primary responsibility is to pioneer the approaches of military robotics and autonomous systems and theirmachine learning (ML) components. The team is involved in the full life cycle of the project. They work closely with other leading military robotics companies and customers all over the world.
To support the R&D Team, you will work with colleagues in developing and validating novel systems and software architecture for RAS implementation. You will work on developing software for our current and future products. The work can range from working on controls of RAS payloads, vehicle automation, image processing, sensor integration, digital twin integration, simulation development, algorithm testing and data analysis. You will enhance the development of the products drawing from your experience and that of your colleagues. You will have the opportunity to meet global end-users and work with them to trial your solutions in real world environments, test them on real applications and get your hands dirty, and this might be on the other side of the world.
Main Duties & Responsibilities:

Intergrate software components into a fully functional software system.
Write clean, maintainable, and scalable code, utilizing modern software engineering practices and tools.
Contribute significantly to the engineering lifecycle, including scoping, design, implementation, testing, deployment and maintenance of your team's work
Collaborate with cross-functional teams to integrate software with hardware components.
Participating in design reviews providing technical input through thedevelopment process.
Coaching team members to improve capabilities and develop their software knowledge/expertise.
Troubleshoot and resolve complex technical issues.
Stay informed on current trends in the software development field and M-RAS and proactively explore their implementation within the company

Qualifications, skills and experience:

A degree in Software Engineering, Computer Science, Physics or Maths with a grade of at least a 2:1 or an equivalent qualification and experience.
Proven experience in relevant industry that will complement and enhance RAS development
Experience with Linux and developing real-time software in C/C++ or Python is essential.
Experience of robotics, machine control systems and automation is desirable.
A basic understanding of electronics and the ability to read electrical schematics is essential.
Demonstrable knowledge and experience of current software engineering practices for RAS.
Experience with ROS/ROS2, machine learning and OpenCV is advantageous.
Knowledge of CODESYS or similar PLC software is beneficial.
Experience working in a multi-disciplined engineering team.
Ability to investigate and interpret data, issues, and situations, to make sound decisions in high-stress situations.
Appetite for learning new technologies and applications.
Ability to communicate complex procedures to colleagues.
Self-motivating, proactive and results driven approach.
Collaborative ethos is essential

Competitive remuneration package offered.
Salary negotiable and dependent on experience.
If you feel that you have the necessary skills and experience, we would like to hear from you.

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Software Engineer

£50000 - £65000 Annually Som3

Posted 3 days ago

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Job Description

permanent

Software Engineer (AI & Workflow Automation)
Location: North West (Remote)
Type: Permanent
Salary: Up to 65,000 + bonus and more

I'm working with a fast-growing UK software company that's building automation and AI products to cut out repetitive work and free people up for what actually matters. They've kept their startup energy - quick to experiment, fast to ship, and genuinely passionate about tech.

They're looking for a software engineer who loves building, tampering, and experimenting. Someone who gets a buzz from automating boring tasks and pushing AI into real-world use.

The role

Build and maintain core platform features (backend, APIs, integrations).
Work on AI-driven projects - voice assistants, chatbots, workflow automation.
Integrate AI and telephony APIs (e.g. GPT, Deepgram, ElevenLabs).
Improve system performance, real-time audio, and reliability.
Contribute to deployment (Docker, CI/CD, Linux).
Work closely with a flat, remote-first team where ideas move quickly from concept to release.

What they're looking for

Strong skills in PHP (Symfony) and Node.js (Express/WebSockets).
Database expertise (MySQL/MariaDB, Redis).
Experience with AI/ML APIs, especially conversational AI.
Hands-on with telephony/messaging APIs.
Solid grounding in Git, testing, debugging, and software best practices.
Clear communicator, proactive, and comfortable working remotely.

Nice to have

TensorFlow/PyTorch or AI model fine-tuning experience.
Some frontend skills (JS, Stimulus/jQuery, Bootstrap/Tailwind).
Background in automation, workflow, or CRM systems.

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4,266 Kotlin Java jobs in the United Kingdom

Java Developer Kotlin AWS - Trading

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Lead UX/UI Designer - Mobile Application Development

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Software Engineer / Senior Software Engineer

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