1,378 Ruby Developer jobs in the United Kingdom

I am currently working with a start-up that is leading the way in the sustainability sector and is seeking a Ruby Developer to join the team. They have had recent funding and are looking to grow their team, meaning there are excellent career opportunities.

The company are currently a provider of employee benefits. They have tapped into some high-profile SMEs and are looking at widening their profile and the benefit opportunities they can provide.

They work in an agile environment with regular testing and work on a tech stack of Ruby on Rails, JavaScript (React) with PostgreSQL, they also work with Rspec for testing Heruko and AWS, there is lots of training and learning opportunities as well as the scope to progress your career.

They are currently in the process of expanding the in-house Development Team as they transition away from a third party team, you will be working on many different Greenfield projects as they expand their current products and you would be able to add valuable input into the future of the project, so this is a role where you will be heard and valued.

On offer is:

• A salary of up to 70k
• Company equity
• Company Pension
• 25 days holiday + BH
• Hybrid working

About Us: 

Solirius Reply, part of the Reply Group, 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 300 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; with plans to increase our client base further in the near future. 

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:  

As a Senior Ruby Developer, you will play a crucial role in developing and maintaining our Ruby-based backend applications while driving initiatives across DevOps, database architecture, and team leadership. Your experience will help guide the development process and the growth of junior developers. This is an opportunity to shape the direction of our platform and foster a culture of collaboration and innovation.

Requirements

Key Responsibilities:

• Ruby Development:
• Design, build, and maintain robust, scalable, and high-performance Ruby applications.
• Write clean, maintainable, and efficient code following best practices and coding standards.
• Collaborate with frontend developers to integrate backend services with the frontend.
• DevOps & Automation:
• Collaborate with the DevOps team to design and implement CI/CD pipelines and deployment automation.
• Ensure the smooth deployment of Ruby applications by utilizing infrastructure-as-code tools (e.g., Terraform, Ansible).
• Maintain and improve our cloud-based infrastructure (AWS, GCP, or Azure) to ensure scalability and reliability.
• Database Architecture & Optimization:
• Design and optimize databases (PostgreSQL, MySQL, or MongoDB) for high performance and scalability.
• Write efficient queries, manage indexing, and improve query performance.
• Implement data integrity and backup strategies to ensure data security.
• Leadership & Collaboration:
• Mentor and guide junior developers in best practices and efficient coding.
• Collaborate with cross-functional teams, including product management, design, and operations.
• Provide technical leadership in project planning and execution, setting clear goals and timelines.
• Participate in code reviews and contribute to establishing coding standards.
• Additional Backend Technology (optional but preferred):
• Knowledge of additional backend technologies such as Node.js, Python, Java, or Go.
• Contribute to full-stack development or transition between different backend frameworks when necessary

Key Requirements:

• Experience in Ruby on Rails development.
• Strong experience with DevOps practices, including CI/CD pipelines, Docker, and cloud platforms (AWS, GCP, or Azure).
• Proficient in relational databases (PostgreSQL, MySQL) and NoSQL databases (e.g., MongoDB).
• Solid understanding of RESTful API design and integration.
• Proven experience leading development teams and mentoring junior engineers.
• Strong understanding of software architecture, version control (Git), and testing frameworks.
• Familiarity with additional backend technologies such as Node.js, Python, or Java is a plus.

Nice-to-Have Skills:

• Experience with infrastructure automation tools (e.g., Terraform, Ansible).
• Knowledge of containerization and orchestration tools such as Docker and Kubernetes.
• Familiarity with Agile/Scrum methodologies.
• Experience in serverless architectures and microservices.

Benefits

Package and Benefits:

• 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 Consulting 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.

Job Title:Software Engineer( Backend Developer)
Location:London
Contract: 6 Months with potential extension (Inside IR35)
Commute- Max 2 days in office
Payrate : 63 - 84 Per Hour Inside IR35

About the Role

We are seeking a Software Engineer (Backend Developer) for the FinTech business unit of a leading global digital travel platform. This role involves building innovative regulatory technology solutions to ensure compliance and manage risks. The engineer will work on a mission-critical platform that uses state-of-the-art technology for sanctions screening and other regulatory processes. The position requires developing highly scalable distributed systems and micro-services that support business objectives and enhance the experience for partners and internal stakeholders

What You'll Do

• Design, build, and maintain scalable microservices that power our compliance platforms.
• Develop tools and systems for sanctions screening, transaction monitoring, and regulatory reporting.
• Optimize backend processes for performance, reliability, and data integrity.
• Enhance tooling, analytics, and reporting used by internal compliance stakeholders.
• Collaborate with cross-functional teams to understand regulatory processes and deliver technical solutions.
• Participate in on-call rotations, incident resolution, and continuous improvement initiatives.
• Contribute to hiring efforts and mentoring junior engineers.

What We're Looking For

• 5+ years of experience in software development with at least 2 server-side languages - Java being must have
• Proven experience with microservices architecture and scalable, distributed systems.
• Proficient in data technologies like MySQL , Hadoop , or Cassandra .
• Experience with batch processing , data pipelines , and data integrity practices.
• Familiarity with AWS services (e.g., RDS, Step Functions, EC2, Kinesis) is a plus.
• Solid understanding of unit , integration , and E2E testing paradigms.
• Prior experience in FinTech, Financial sector, Banking or Payment system.
• Awareness of security best practices (authentication, authorization).
• Experience with globally distributed teams is a plus.

This is an urgent vacancy where the hiring manager is shortlisting for an interview immediately. Please apply with a copy of your CV or send it khushboo. pandey @ randstad. Co. uk

Randstad Technologies is acting as an Employment Business in relation to this vacancy.

Backend Developer – Elixir / Ruby / Go
Location: Remote (One day a month in Chester)

How does joining a fast-scaling tech business in one of the most exciting growth areas sound?

We are helping a client find a Backend Developer to join the engineering team behind a leading IoT platform – used by thousands of businesses across the UK and beyond. With strong growth, a major product roadmap, and heavy investment in innovation, this is a great time to join the journey.

You’ll be building and improving a modern, microservice-driven platform running on AWS – working in a cross-functional team with a strong DevOps culture, automated pipelines, and a product mindset.

If you're someone who enjoys scaling systems, working across multiple environments, and getting stuck into interesting challenges – you’ll enjoy the setup here.

• Building and maintaining back-end systems using Elixir and Ruby , ideally with some Go experience too

• Leading by example when it comes to engineering standards, delivery pace, and code quality

• Supporting less experienced developers and getting involved in key architectural decisions

• Working closely with Product, QA, and DevOps in an agile, outcomes-first team

• Getting hands-on when needed – especially during high-stakes delivery windows or critical moments

• Remote-first working (UK based) with flexibility

• The chance to work on a major product with real-world scale and complexity

• A growing tech business with a great culture and lots of progression routes

• Competitive salary, bonus potential, and a solid benefits package

• A team who care about clean code, high standards, and solving meaningful problems

If you are interested then please submit your CV as soon as possible and we will be in touch. 

Backend Developer – Elixir / Ruby / Go
Location: Remote (One day a month in Chester)

How does joining a fast-scaling tech business in one of the most exciting growth areas sound?

We are helping a client find a Backend Developer to join the engineering team behind a leading IoT platform – used by thousands of businesses across the UK and beyond. With strong growth, a major product roadmap, and heavy investment in innovation, this is a great time to join the journey.

You’ll be building and improving a modern, microservice-driven platform running on AWS – working in a cross-functional team with a strong DevOps culture, automated pipelines, and a product mindset.

If you're someone who enjoys scaling systems, working across multiple environments, and getting stuck into interesting challenges – you’ll enjoy the setup here.

• Building and maintaining back-end systems using Elixir and Ruby , ideally with some Go experience too

• Leading by example when it comes to engineering standards, delivery pace, and code quality

• Supporting less experienced developers and getting involved in key architectural decisions

• Working closely with Product, QA, and DevOps in an agile, outcomes-first team

• Getting hands-on when needed – especially during high-stakes delivery windows or critical moments

• Remote-first working (UK based) with flexibility

• The chance to work on a major product with real-world scale and complexity

• A growing tech business with a great culture and lots of progression routes

• Competitive salary, bonus potential, and a solid benefits package

• A team who care about clean code, high standards, and solving meaningful problems

If you are interested then please submit your CV as soon as possible and we will be in touch. 

Job Title:Software Engineer( Backend Developer)
Location:London
Contract: 6 Months with potential extension (Inside IR35)
Commute- Max 2 days in office
Payrate : 63 - 84 Per Hour Inside IR35

About the Role

We are seeking a Software Engineer (Backend Developer) for the FinTech business unit of a leading global digital travel platform. This role involves building innovative regulatory technology solutions to ensure compliance and manage risks. The engineer will work on a mission-critical platform that uses state-of-the-art technology for sanctions screening and other regulatory processes. The position requires developing highly scalable distributed systems and micro-services that support business objectives and enhance the experience for partners and internal stakeholders

What You'll Do

• Design, build, and maintain scalable microservices that power our compliance platforms.
• Develop tools and systems for sanctions screening, transaction monitoring, and regulatory reporting.
• Optimize backend processes for performance, reliability, and data integrity.
• Enhance tooling, analytics, and reporting used by internal compliance stakeholders.
• Collaborate with cross-functional teams to understand regulatory processes and deliver technical solutions.
• Participate in on-call rotations, incident resolution, and continuous improvement initiatives.
• Contribute to hiring efforts and mentoring junior engineers.

What We're Looking For

• 5+ years of experience in software development with at least 2 server-side languages - Java being must have
• Proven experience with microservices architecture and scalable, distributed systems.
• Proficient in data technologies like MySQL , Hadoop , or Cassandra .
• Experience with batch processing , data pipelines , and data integrity practices.
• Familiarity with AWS services (e.g., RDS, Step Functions, EC2, Kinesis) is a plus.
• Solid understanding of unit , integration , and E2E testing paradigms.
• Prior experience in FinTech, Financial sector, Banking or Payment system.
• Awareness of security best practices (authentication, authorization).
• Experience with globally distributed teams is a plus.

This is an urgent vacancy where the hiring manager is shortlisting for an interview immediately. Please apply with a copy of your CV or send it khushboo. pandey @ randstad. Co. uk

Randstad Technologies is acting as an Employment Business in relation to this vacancy.

Role: Backend Engineer (NestJS, SaaS, ERP)
We're hiring a seasoned backend engineer to lead our platform rebuild You'll collaborate closely with the founder, shaping the product and scaling the tech.

What You'll Do

• Lead backend dev using NestJS

• Design scalable APIs and ERP/accounting tool integrations

• Work with AI tools (OpenAI, Vertex AI)

• Define architecture and set engineering standards

• Mentor junior .

WHJS1_UKTJ

Senior Backend Developer

Capital Pay Software Solutions Ltd

• Promoting world class payment solution systems to global audiences
li>Capital Pay Software Solutions Ltd is advancing its capabilities by enhancing its Payment Aggregator Platform.  li>This strategic initiative is crucial to our international operations, designed for optimal flexibility and adaptability across diverse markets. We are seeking highly skilled and motivated professionals to strengthen our expert team. If you excel in a dynamic environment and are dedicated to developing secure and scalable FinTech solutions, we encourage you to connect with us. Join Capital Pay International in driving innovation in the global payment landscape.
•  

Key Responsibilities:

• Lead the design and development of the core backend architecture, including the API gateway, transaction management layer, and merchant management layer.
• Select and implement appropriate technologies from our stack, which includes python, Node.js, or Jave for programming languages; Django, Express.js, or Spring Boot for frameworks; and PostgreSQL or MySQL for transactional date, with Redis for caching and session management.
• Design and implement robust security measures, including AES-256 encryption for sensitive data, TLS for secure communication, and OAuth/JWT for authentication and authorisation.
• Ensure the platform is compliant with PCI-DSS, GDPR, and other relevant data protection regulations.
• Integrate multiple payment gateways (Capital Pay, Stripe, Paypal, Barclaycard, Adyen, Worldpay) using provided SDKs/APIs.
li>Implement advanced fraud detection and anti-mney laundering (AML) systems.
• Develop and maintain RESTful APIs for seamless communication with the frontend and external systems.
li>Implement features for transaction tracking and status management (pending, completed, failed), refund and chargeback handling, and payment settlement (funds transfer to merchant accounts).
• Participate in architectural design discussions, code reviews, and technical mentoring.
• Contribute to the development of a developer-friendly API and comprehensive documentation.
• Set up and manage cloud infrastructure on AWS, Google Cloud, or Azure.
• Implement and manage continuous integration and continuous delivery (CI/CD) pipelines to automate software builds and deployments

We are looking for a candidate who:
• Has a proven track record of 6+ years in backend development, with significant experience in the FinTech or financial services sector.
• Possesses deep expertise in building scalable and secure backend services.
• Is proficient in at least one of the specified programming languages (Python, Node.js, Kotlin or Java) and their associated frameworks.
• Has a strong experience with database design and management, including both SQL (PostgreSQL or MySQL) and potentially NoSQL databases.
• Has hands-on experience with RESTful API design and microservices architecture.
• Demonstrates a strong understanding of security best practices and compliance standards like PCIDSS and GDPR.
• Has experience integrating with third-party APIs, particularly payment gateways.
• Has experience in NFC/RFID technology and Payment Networks integrations.
• Is adept at problem-solving, has excellent attnetion to detail, and can work effectively in a fast-paced,agile environment.
• Familiarity with serverless architecture is beneficial.
• Experience with messaging systems like RabbitMQ or Kafka is a plus.
• Experience implementing two-factor authentication (2FA) for user logins.
• Experience with performance optimisation for high-traffic scenarios and a large number of concurrent users.