4,577 Rails Developer jobs in the United Kingdom

Ruby Developer - FinTech - Up to 55k

I’m working exclusively with a scaling fintech client (so you won't hear this via another recruiter) who are expanding their footprint in the market. They’re looking for multiple Mid-Level Ruby Developers to join their small, collaborative team

Salary: £45,000 – £55,000

Working Arrangements : Hybrid in London (3 days a week in the office)

Tech Stack: Ruby on Rails, JavaScript, DevOps tooling's, AWS

This is a backend focused role although any frontend experience is a bonus.

It's a great opportunity to work on exciting projects in an environment which will support you and help you grow as an engineer. You will also be working very closely with their customers and this is experience that they really value.

If this is of interest, please get in touch ASAP - will be moving quickly!

Ruby Developer - FinTech - Up to 55k

London (GB)

Octopus Electroverse – Software Engineering /

Full-time /

Hybrid

We're making electric vehicle ownership as smart and simple as possible, by building the world's largest public charging platform.

In just four years, Octopus Electroverse has grown to become one of the largest eMobility players globally, with over 1,000,000 connected electric vehicle chargers and a customer ecosystem spanning web, iOS, Android, CarPlay, Android Auto & Automotive OS, and more.

But it's just the start: we're busy expanding internationally, working with more automotive and tech partners, building exciting new features at scale, and creating the integrated charging experiences of the future - all in the name of making public EV charging super simple for customers.

Electroverse is a multifunctional team made up of product, development, commercial, operations, marketing, partnerships teams, and more - all focused together on making Octopus the go-to name in EV charging. And we're looking for smart individuals with an interest in the space who can help us make it happen.

This Role:

We're looking for someone who's passionate about code, curious, and eager to learn. You'll be working alongside the backend team that provides services for our Electroverse ecosystem in the electric vehicle and electrification space with focus on helping develop the core functionality of our business. You'll help us develop solutions for processing payments, analyse financial traffic and aid us in detecting suspicious activity.

Our project is establishing itself as the leading e-mobility provider solution within the industry and we want to take it to the next level. This means we're working on big features which will give you the chance to have a huge impact and, given our ambitions in the electrification space, influence how the back-end scales to meet new challenges and create a wider ecosystem.

Overall, you'll work with a small, high-energy project team to bring the product to life - an exciting opportunity to work like a start-up within a rapidly scaling EnTech business.

What You'll Do…

• Help us improve the core product by developing and improving our financial system
• Help improve the accuracy of our financial reporting and payment success rates across our existing and potential payment providers
• Build tools to detect and monitor fraudulent operations, help develop risk analysis and prevent malicious behaviour
• Work as part of a larger cross-functional team to deliver the best quality product for our clients
• Support the Operations team in resolving payments-related customer issues and the Financial team in building accurate reporting systems

What You'll Have.

• Passion to create something amazing, and the mindset to learn and grow with the company
• A strong understanding of the Python and Django ecosystems with 3+ years of experience
• Knowledge of payment providers, e.g. Stripe / Adyen / WorldPay
• Experience with Fraud and Risk analysis
• Experience with KYC/KYB products and flows
• Experience with billing and invoicing flows
• Experience with monitoring and debugging applications and infrastructure
• Experience maintaining asynchronous processing systems (AMQP, Celery)
• An ability to discuss vision and features within a team and propose creative solutions
• Knowledge of common security practices
• Familiarity with continuous integration and continuous deployment
• An ability to write robust and fault-tolerant software
• Proficient understanding of Git

If this sounds like you then we'd love to hear from you.

Are you ready for a career with us? We want to ensure you have all the tools and environment you need to unleash your potential. Need any specific accommodations? Whether you require specific accommodations or have a unique preference, let us know, and we'll do what we can to customise your interview process for comfort and maximum magic
Studies have shown that some groups of people, like women, are less likely to apply to a role unless they meet 100% of the job requirements. Whoever you are, if you like one of our jobs, we encourage you to apply as you might just be the candidate we hire. Across Octopus, we're looking for genuinely decent people who are honest and empathetic. Our people are our strongest asset and the unique skills and perspectives people bring to the team are the driving force of our success. As an equal opportunity employer, we do not discriminate on the basis of any protected attribute. Our commitment is to provide equal opportunities, an inclusive work environment, and fairness for everyone.

Siamo alla ricerca di un Backend Developer esperto, con una solida esperienza nello sviluppo di API e sistemi distribuiti, da inserire in un progetto innovativo nel settore dei servizi finanziari digitali.

Progettare, sviluppare e mantenere API RESTful in TypeScript e C#

Gestire e ottimizzare database SQL (MS SQL) e NoSQL (Firebase, CosmosDB)

Integrare modelli di AI e Machine Learning per potenziare le funzionalità delle applicazioni

Collaborare con il team frontend per garantire un’integrazione fluida tra i sistemi

Implementare strategie di scalabilità , sicurezza e performance per le applicazioni backend

Scrivere codice pulito, documentato e testato seguendo le best practice di sviluppo

Almeno 5 anni di esperienza nello sviluppo backend

Ottima conoscenza di TypeScript/Node.js , C# e MS SQL

Esperienza con framework backend e servizi cloud (Azure o Google Cloud)

Familiarità con ambienti FaaS/PaaS e con pipeline CI/CD

Buone capacità di comunicazione e inglese professionale

Conoscenza del settore finanziario (trading online, banking o criptovalute come plus)

Esperienza con microservizi e architetture serverless

Conoscenza di strumenti di monitoraggio e logging

Esperienza con strumenti di testing automatizzato

Progetti tecnologicamente stimolanti in un contesto finanziario in crescita

Collaborazione con team altamente qualificati

Ambiente di lavoro flessibile e orientato all’innovazione

Opportunità di crescita e formazione continua  

I dati saranno trattati e conservati esclusivamente per le finalità di questa o future selezioni, nel rispetto della Legge federale sulla protezione dei dati (LPD) e garantendo i diritti di cui all'art. 13 del Regolamento UE 679/16 (GDPR).

• Drive the technical direction and architecture of backend systems supporting live services and social experiences.
  
• Lead and mentor a high-performing team of backend engineers, promoting technical excellence and growth.
  
• Drive engineering execution and prioritise scalable, secure, and performant system design.
  
• Collaborate closely with product, design, and frontend teams to deliver end-to-end features.
  
• Make architectural decisions across technologies including C#, Kubernetes, AWS, SQL, PostgreSQL, and MongoDB.
  
• Support our DevOps team with defining best practices and the overseeing of CI/CD pipelines as well as observability tools for backend operations.
  
• Foster a strong culture of agile development, code quality, and continuous improvement.
  

• System performance, uptime, and scalability across live production environments.
  
• Velocity and quality of backend feature delivery in alignment with product roadmaps.
  
• Engineering team health, retention, and technical development.
  
• Ability to support rapid iteration without compromising backend reliability or security.
  

• 10+ years of experience in backend systems development, ideally with large-scale, cloud-based platforms.
  
• 5+ years in technical leadership roles, including managing backend-focused engineering teams.
  
• Deep knowledge of C#/.NET, Kubernetes orchestration, and AWS services.
  
• Strong experience with data storage technologies including relational (SQL, PostgreSQL) and NoSQL (MongoDB) databases.
  
• Experience with C++ is considered beneficial.
  
• Proven ability to balance fast feature delivery with building for long-term scalability and maintainability.
  
• Skilled in CI/CD, automated testing, service monitoring, and incident response.
  
• Familiarity with modern dev practices including trunk-based development and microservices architecture.
  
• Experience with Microsoft's Orleans framework is a bonus.
  

• Collaborative leader with a passion for building innovative, high-impact products.
  
• Excellent communicator able to translate complex technical concepts into clear direction.
  
• Committed to building inclusive, high-performance teams that thrive on trust and autonomy.
  

Location: This is a homebased role with headquarters in Southampton.
Senseye Predictive Maintenance is a cloud-based solution that leverages advanced machine learning to revolutionize industrial maintenance. Our web application helps manufacturers reduce downtime, optimise maintenance schedules, and improve sustainability by providing real-time insights into equipment health and maintenance requirements.
We are seeking an ambitious and versatile senior Backend Developer who is comfortable working on data intensive applications. They will be responsible for the design, implementation, testing and roll out of new features and services within our service-orientated architecture. You will be involved in collaborating with the rest of the team to come up with innovative solutions to complex problems. Culturally, we pride ourselves in our agility - we practise continuous deployment and benefit from high levels of autonomy and trust.
You'll make a difference by:

• Design, develop and deploy across a large micro-service architecture, whilst addressing challenges of scalability and reliability
• Engage with product and front-end teams to build new product features and improve existing functionality
• Work alongside other engineers, collaborating on architecture and technology decisions
• Share your technical expertise across the engineering team
• Writing clean code whilst working on difficult problems under the pressure of deadlines

You'll win us over by:

• Bachelor's or higher Degree in Computer Science or related field
• Experience with building enterprise-grade software utilising Golang and Python
• Familiarity with cloud technologies: Azure, AWS, Terraform, Docker, Kubernetes
• Deep knowledge of software engineering principles: object-oriented design, algorithmic complexity, software design patterns
• Experience working as part of a team on a rapidly growing application and codebase

Advantageous:

• Deploying Python and data science workloads to production
• Proficiency in database technologies including NoSQL (Mongo), caching solutions (Redis) or time-series (InfluxDB)
• Deep understanding of distributed system design patterns and protocol

What can we offer?

• Performance-Based Bonus: Enjoy an annual bonus linked to the company's performance
• Flexible Working Hours: Achieve a healthy work-life balance with our flexible working arrangements
• Pension Plan: Secure your future with our generous pension scheme, with employer contributions up to 10%.
• Time Off: Recharge and rejuvenate with 26 days of annual leave (plus bank holidays), and the option to buy or sell an additional 5 days

We are fully committed to providing equal opportunities and building an inclusive workplace where a broad range of backgrounds and perspectives thrive. We embrace the many ways people think, learn, and experience the world—because we know that diverse minds drive innovation. So that we can support you to be your best during the application and interview process, please let us know if you have any specific requirements.

Primary Skills

Strong programming skills in Java and Spring Boot.

Hands-on experience with Microservices architecture and RESTful APIs.

Proficiency with Kafka and distributed streaming systems.

Solid understanding of SQL and data modeling.

Experience with containerization (Docker) and orchestration (Kubernetes).

Working knowledge of Flink, Spark, or Databricks for data processing.

Familiarity with AWS services (ECS, EKS, S3, Lambda, etc.).

Basic scripting in Python for automation or data manipulation.