Back End Developer
Posted today
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We're a UK based, profitable and fast growing company that began as a small bootstrapped AI startup in 2023. Nowadays, we're a relatively small team (10) of talented individuals located in London, Brighton and Bratislava.
In a period of significant growth, we're looking for another talented engineer to help us scale further and allow the company to help even more job seekers save time by automating job applications and building tools they love using.
We’re hiring a backend developer to join our Auto-Apply team.
This team is building a system that automatically finds the best jobs for users, fills out applications on their behalf, and lets them approve or reject jobs directly from their dashboard.
- Build and maintain automation for job application flows across multiple ATS systems
- Add new integrations so we can support more users and more job platforms
- Work on the backend services that power job search, matching, and application submission
- Collaborate closely with the frontend and product teams to deliver fast, reliable user experiences
- Write clean, maintainable code and contribute to system design discussions
- Help improve the performance and scalability of our job search and application engine
- Auto-Apply: Playwright, Python, FastAPI, Meilisearch
- Main web backend: Laravel (PHP), Vue.js
- Strong backend development skills (Python or PHP experience preferred)
- Comfortable working with APIs, integrations, and external systems
- Familiarity with Playwright or browser automation is a big plus
- Solid understanding of web technologies and modern backend frameworks
- Proven ability to work independently, you take ownership, figure things out, and don’t need constant hand-holding
- You thrive in a team of A-players where speed, precision, and reliability matter
- Join a fast-growing UK-based company with a global user base
- Be part of a profitable and sustainable business, not a burn-and-churn startup
- Work on critical systems that power the core of the product, your code will have real impact from day one
- Learn fast and grow quickly by taking ownership of challenging, high-leverage problems
- Small, high-performing team, direct communication, no bureaucracy
- Regular team meetups every few months in England, Slovakia, or other European capitals. A chance to align, build, and have a good time together
AI Apply is on a mission to make job applications effortless using the power of AI and automation. We help candidates stand out and get hired faster by streamlining the application process—from CVs to cover letters to full job submissions—in just a few clicks. Backed by real user growth and built by a fast-moving team, we’re one of the fastest-growing startups in the region. With a lean, hands-on approach and a strong focus on data, we’re redefining how people get hired. We’re remote-friendly, Europe-based, and building a team of smart, kind people who want to create something meaningful—together.
Back End Developer
Posted 2 days ago
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Role: Back End Engineer (Python)
Location: London (Hybrid)
Inara are excited to be partnered with a pioneering AI ScaleUp, where they have built a platform that uses AI to transform how organisations tackle inefficiencies and scale their operations. Now we’re looking for a Backend & Integrations Engineer to help us bring that vision to life.
This isn’t just another backend role, you’ll be hands-on with Python, APIs, and system integrations , while also championing the use of AI tools in day-to-day engineering. Think of it as coding meets next-gen automation.
The role will be:
- Designing and refining backend services that power our SaaS apps.
- Developing integrations with external APIs and systems.
- Taking automation-generated code and making it production-ready.
- Embedding AI capabilities into workflows with strong safeguards and monitoring.
- Helping the team get the most from AI-assisted development.
- Partnering with product, data, and platform teams to deliver impactful features.
You will need:
- Solid Python skills and confidence working with APIs and databases.
- Hands-on experience with integrations (APIs, file transfers, webhooks).
- Familiarity with workflow orchestration tools (e.g. Temporal, Dagster).
- Comfortable working with AI-driven coding tools and automated code generation.
- Knowledge of CI/CD pipelines, containerisation (Docker), and cloud platforms (AWS/Azure/GCP).
- A curious mindset and enthusiasm for raising the team’s AI skills.
If you’re excited by the idea of blending backend engineering with AI-powered development, we’d love to hear from you.
Back End Developer
Posted 2 days ago
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Title: Node.js Backend Developer
Salary: up to £80,000 + share options
Location: Fully remote (UK)
Sector: Cybersecurity SaaS
We’re supporting a high-growth cyber SaaS scale-up on the hire of a Node.js Backend Developer to own production APIs and serverless microservices. You’ll work with senior engineers to design, build and operate secure, reliable services that protect users in real time.
What you’ll do
- Design, develop and secure RESTful APIs and serverless microservices (AWS).
- Optimise data access across MySQL/RDS and NoSQL (DynamoDB); write efficient queries.
- Automate deployments (CI/CD), add observability, and ship with high quality.
- Collaborate on architecture, testing and documentation; contribute across the full lifecycle.
What you’ll bring
- 3+ years’ commercial Node.js engineering.
- Hands-on AWS Serverless (Lambda, API Gateway, CloudWatch) and microservices.
- Experience with AWS Amplify.
- Strong API security (OAuth/JWT) and SQL/MySQL query optimisation.
- Version control with Git and modern team workflows.
Why apply
- Up to £80k base + share options.
- 25 days’ holiday + bank holidays & your birthday off.
- Private healthcare (24/7 GP & mental health), pension, eye-care support.
- Fully remote (UK); learn from senior engineers; clear growth path.
If you enjoy solving real-world problems, want to work with modern tech, and like the idea of being part of a mission-driven team, this could be the role for you.
Click "Apply" now or reach out to to discuss the role in more detail.
Back End Developer
Posted 2 days ago
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Backend Engineer - Gen AI
- Backend development – building and maintaining Python-based web applications.
- Generative AI & LLMs – understanding and working with large language models (LLM) and GenAI datasets. Also integrating ML into applications.
- Cloud infrastructure – experience with Google Cloud (Cloud Run preferred) and core web app infrastructure.
- DevOps tools – familiarity with Git/GitHub, CI/CD, and deployment practices - I wouldn't put that in search string however look out for the tech stack
- NLP & agent-based frameworks – knowledge of LangGraph, PydanticAI, AutoGen, etc.
Please apply to the advert for more information.
Back End Developer
Posted 2 days ago
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Job Title: BackEnd Technical Support Developer
Location: London, UK
Work Pattern: Hybrid – 3 days onsite, 2 working from home
Salary: up to £50,000 per annum + on call bonus
Job Position: Permanent
Additional Info: This position does require you to be on call every 5th week (extra pay on top of your salary)
We are looking for a dedicated BackEnd Technical Support Developer to help handle production issues. This includes working with the company’s clients and customer success team to identify the source of a technical problem and then fixing those problems.
This role covers a lot of technologies, from UI, React, system configuration, Node.js backend code, databases and AWS hosting. So this is a great opportunity to learn and expand all those skills.
What we’re looking for from a Back End Developer:
- The right candidate needs to be hungry to learn, a good problem solver and can prioritise what is important and get it done.
- It is very much a role that is a combination of a digital detection and a problem solving.
- It requires getting to know the client’s needs, the company’s platform features and technologies from the ground up.
Experience needed as a Back End Developer:
- 3+ years of Node.js development
- Type Script/Strong JavaScript skills
- React
- REST API development
- SQL
- Git
Back End Developer
Posted 2 days ago
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Backend Software Engineer
Location: London (5 days per week, on-site)
Seniority: Mid-level (3–8 years’ experience)
About the Role
We’re looking for a talented Backend Software Engineer to join our London-based platform team. You’ll play a pivotal role in designing, building, and maintaining robust backend systems, with a strong focus on infrastructure and database design. This is a hands-on role where you’ll work closely with engineers to deliver high-quality, scalable solutions that drive our platform forward.
What You’ll Do
- Collaborate with the London-based platform team on new features and infrastructure improvements.
- Take ownership of backend systems, ensuring reliability, scalability, and security.
- Contribute to backend engineering tasks, working primarily with Python and SQL .
- Design and optimize infrastructure and databases for performance and resilience.
- Leverage your experience with TypeScript and optionally lower-level languages such as C or Rust .
- Bring curiosity and a passion for learning to continuously improve both yourself and the platform.
Tech Stack
- Primary: Python, SQL, TypeScript
- Additional: C, Rust
What We’re Looking For
- 3–8 years of backend software engineering experience.
- Deep knowledge of Python , SQL , and TypeScript .
- Strong background in infrastructure and database design .
- Proven experience working in startups or fast-paced environments.
- Bonus points for:
- Experience with lower-level languages (C, Rust )
- Demonstrated expertise in another field (showing passion and drive, even outside engineering).
Soft Skills
- Excellent communication skills, with the ability to clearly explain technical issues and reasoning.
- A growth mindset with a genuine passion for continuous learning.
Traits to Avoid
- This is not a Data/ML engineering role — we’re looking for backend engineers with strong infrastructure and systems experience.
Lead Back End Engineer
Posted 2 days ago
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About the job
Reporting to a Software Engineering Manager or Head of Engineering, we are seeking a Lead Back End Software Engineer to be the go-to authority for backend engineering, setting the technical vision, guiding architecture, and driving improvements in tools, processes, and delivery practices. You’ll remain hands-on for critical work, but your greatest impact will come from technical leadership, enabling teams to deliver robust, scalable, and secure services.
With a strong foundation in backend technologies, including Java and Spring Boot, and event-driven systems such as Kafka, you’ll influence systems well beyond your own code, ensuring architectural integrity and high engineering standards across multiple teams. You’ll play a pivotal role in aligning technical strategy with business goals and ensuring our backend capabilities are future-ready.
What it's like working at mkodo
What You'll Be Doing…
Technical Leadership
- Define and evolve backend architecture to ensure scalability, maintainability, and performance.
- Set coding standards and champion secure development practices (e.g. OWASP).
- Influence technology choices, frameworks, and tools to support engineering excellence.
- Oversee improvements to CI/CD pipelines, build processes, and operational workflows.
- Can clearly and confidently articulate risk of technical problems to non technical stakeholders (e.g legal, product owner, designer)
- Leads projects and features to good outcomes, ensuring appropriate engineering decisions are made to factor in technical debt, systems design, stability/reliability, monitoring/observability and business need.
Hands-On Guidance
- Contribute to key backend systems when your expertise is needed.
- Review and refine critical code, ensuring alignment with architectural goals and best practices.
- Provide technical oversight for major initiatives, ensuring architectural soundness.
Mentoring & Collaboration
- Coach, mentor, and develop engineers, raising capability across the backend discipline.
- Facilitate design discussions, code reviews, and collaborative problem-solving sessions.
- Build consensus for architectural and technical decisions across teams and stakeholders.
Check out the full details, including day-to-day duties and responsibilities on our website: mkodo careers
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Back End Software Engineer
Posted 6 days ago
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Who are we?
Hi!
Automation Engineer (Back End)
Posted 27 days ago
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About Us:
Solirius Reply delivers technical consultancy and application delivery to our clients in order to solve real world problems and allow our clients to respond to an ever-changing technical landscape. We partner closely with our clients, embedding our consultants into their businesses in order to provide a bespoke service, allowing us to truly understand our clients' needs.
It is this close collaboration with our clients that has enabled us to grow rapidly in recent years and will drive our ambitious future growth plans. We currently have over 250 consultants working with a variety of key clients from both the public and private sectors such as the Ministry of Justice, Department for Education, FCDOS, UEFA, International Olympic Committee and Mercedes Benz; and we are actively working to expand on this.
We operate as a flat organisation and believe in trusting and supporting our team to operate independently. We pride ourselves on being specialists at what we do, making the most of our consultants' expertise in their fields in order to provide a best-in-class service to our clients. All our consultants have the opportunity to work on a range of different projects, providing a broad range of knowledge on which to develop their careers and progress in the direction they choose.
About You:
You are a motivated and adaptable professional with a strong analytical mindset and a passion for using technology to solve real-world problems. You enjoy working in collaborative, agile teams and take pride in delivering high-quality solutions that make a tangible impact. With strong communication skills and a consultative approach, you’re comfortable engaging with clients, understanding their needs, and translating them into effective outcomes. You understand and align with Solirius Reply Values
The Role:
We are looking for experienced Automation Test Engineers / SDET to work on projects with our clients from both the public and private sectors. You will have a testing background and be confident using your skills to run projects directly with clients with minimal supervision.
You will be a fundamental member of the team, responsible for designing, developing and delivering test solutions whilst supporting and developing other members of the team and fostering best practice, keeping up to date with industry standards and advances.
While most of our work can be done remotely, giving you the flexibility to work where you’re most comfortable, we do expect all of our consultants to be open to travel as required by our clients, primarily to London. This role would therefore be best suited to those within a commutable distance of London.
Requirements
Key Responsibilities
- Overseeing all aspects of developing, implementing, and maintaining automated test scripts using automation tools.
- As part of this role, you'll verify the usability, functionality, performance, and scalability of our and our clients applications.
- Constructing automation tools and expanding framework functionalities to accommodate unique team requirements.
- Initiating and establishing processes for automation and performance monitoring.
- Actively contributing to both our Quality Engineering teams and our clients in establishing Automation and Testing best practices for the organisation.
- Collaborating with various teams to address their automation challenges and coordinating efforts with diverse teams to resolve performance test failures.
Key Skills & Experience:
- Excellent communication and collaboration skills.
- Must have great analytical and troubleshooting skills as well as thrive in a dynamic work environment.
- In depth understanding of QA process and software development life-cycle.
- Hands-on experience of building test automation frameworks from scratch.
- Proficiency in scripting and programming languages such as JavaScript and Java (3+years).
- Experience of API testing, ideally using RestAssured or SoapUI.
- Experience in the implementation of Contract Testing solutions.
- Familiarity with the configuration of CI/CD pipelines.
- Expertise in establishing and executing testing tools, testing environments, and testing data throughout different stages of the testing process.
- Experience of working closely with cross-functional teams, including developers, and other QA team members, to design, develop and enhance automation frameworks.
- Familiarity with containerisation technologies (e.g., Docker) and orchestration tools (e.g., Kubernetes) for testing microservices in a containerised environment.
- Automated API testing with Java (e.g. RestAssured / SoapUI)
- Experience with Contract Testing tools (e.g., PACT)
- Experience using collaborative tools such as Jira, Confluence, or similar for test case management, documentation, and communication within Agile/Scrum teams.
- Working knowledge of CI/CD pipelines, including experience with Jenkins, GitLab CI, or other CI/CD tools for automated testing and deployment.
- Understanding of testing microservices-based applications.
- Familiarity with cloud platforms (e.g., AWS, Azure).
- Understanding of Accessibility testing.
Benefits
What We Offer:
- Competitive Salary
- Bonus Scheme
- Private Healthcare Insurance
- 25 Days Annual Leave + Bank Holidays
- Up to 10 days allocated for development training per year
- Enhanced Parental Leave
- Paid Fertility Leave (5 Days)
- Statutory & Contributory Pension
- EAP with
- Gym Membership Benefits
- Flexible Working
- Annual Away Days/Company Socials
Equality & Diversity:
Solirius Reply is an equal opportunities employer. We are committed to creating a work environment that supports, celebrates, encourages and respects all individuals and in which all processes are based on merit, competence and business needs. We do not discriminate on the basis of race, religion, gender, sexuality, age, disability, ethnicity, marital status or any other protected characteristics.
Should you require further assistance or require any reasonable adjustments be put in place to better support your application process, please do not hesitate to raise this with us.
Senior Back End NodeJS Developer (AWS)
Posted 2 days ago
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Experienced Back End Typescript / Javascript Developer (AWS, Typescript, NodeJS, GraphQL) - TSDBE25
You will need extensive experience using Typescript and AWS services for this role.
We develop the SaaS platform that keeps beer flowing through the UK’s pubs.
We run a serverless stack, using the Serverless Framework, AWS Lambda, AWS AppSync and other AWS managed services. We use TypeScript, but our priority is designing maintainable, modular, and well-tested code. You will be able to demonstrate extensive experience working with these technologies and be very comfortable developing and deploying complex event-driven applications using this stack.
Because we are a smaller team your contribution will really be valued. You will be able to influence the way we work and how we build our products. Equally we will be relying on you to work hard, muck-in when needed and create amazing software.
We’re supportive, fun and enthusiastic. We care about your development and will spend a significant amount of time supporting your ongoing learning and development goals.
Key Duties and Responsibilities
- Recommending appropriate AWS architectures for new product features
- Developing new product features on the backend (Typescript, NodeJS, AWS Services)
- Evolving existing features to provide enhanced functionality
- Following test driven development (TDD) approach to development
- Maintaining existing software
- Maintaining security and resilience of our systems
- Responding to and resolving system degradations
- Contributing to code reviews and helping shape good practices across the team
- Developing an in-depth understanding of our underlying codebase, data structure and system architecture
- Developing a close relationship with our stakeholders to provide operational support
- Working closely as a proactive member of our team
Working Hours
Our usual working hours are Monday to Friday 9am to 5pm. In addition, we ask you to be available to respond to production system degradations at any reasonable time.
Candidate Profile
Essential Technical
- Confident Typescript & NodeJS programmer
- Extensive experience using:
- Typescript
- NodeJS
- AWS Lambda
- AWS Amplify
- AWS AppSync
- AWS Cognito
- AWS Dynamo
- AWS CloudFormation
- Other AWS serverless services
- Extensive experience of writing clean, readable and well-structured code that aligns with engineering best practices (e.g. SOLID principles and test driven development).
- Experience working with Git, Github and the Gitflow branching model
- Strong understanding of security best practices
Experience of the following is also highly advantageous:
- AWS Athena
- AWS Glue
Personal Attributes
- Inquisitive, innovative, lateral thinking
- Thorough with strong attention to detail
- A proactive and determined approach to problem solving
- A passion and aptitude for working with business data
- Capable of prioritising multiple streams of work, in varying states of completion
- Great communication skills, both written and verbal
- Comfortable working in a fast-paced environment
- Have a passion for the web, digital and emerging technologies
- Be a natural advocate for data and BI
- A natural collaborator and team player
- Competitive salary and bonuses
- Central London office (min. 3 days per week)
- Hybrid working
- Matched charity donations
- Charity volunteering days (full pay)
- Work from the EU scheme
- Generous holiday entitlement with option to purchase extra days off
- Private medical insurance contributions
- Summer working hours
- Annual coffee card
- Cinema vouchers
- Pension contributions
- Remote working equipment subsidy