879 Backend Staff jobs in the United Kingdom

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.

We’re partnering with a rapidly growing seed stage startup that’s tackling one of the last major bottlenecks in innovation, helping industries like aerospace, healthcare, and energy move faster by modernizing how physical systems and devices are certified. Their platform makes it easier for companies with the highest standards to understand and meet complex certification requirements.

In just 3 months, they’ve generated six-figure revenue and closed a $4.5M seed round from top-tier investors behind Coinbase, Reddit, Klarna, and Spotify .

Now, they’re looking for exceptional Backend Engineers to join their founding team in London.

What You’ll Do

• Ship from Day 1: Deploy to production your first day, take full ownership of what you build.
• Build End-to-End: Design, spec, and deliver new features and services.
• Solve Hard Problems: From scaling infrastructure to improving developer experience and talking to customers, you’ll do what it takes to move the product forward.

What They’re Looking For

• 2+ years of hands-on engineering experience shipping production-grade code.
• Strong background in backend or infrastructure engineering (Python, TypeScript, Go, or Rust).
• Experience with APIs, distributed systems, databases (SQL/graph), containers, and cloud infra (AWS + Pulumi preferred).
• Proven ability to own and deliver projects with intensity and speed, bonus if you’ve been an early startup member or founder.

Why Join

• Compensation: £100k+ base salary + meaningful equity.
• Impact: A once-in-a-generation chance to shape how humanity brings new ideas into the physical world.
• Environment: In-person, high-energy team working 6 days a week in London (visa sponsorship and relocation covered).
• Support: All tools, meals, and resources provided, so you can focus on building.
• If you’re a problem-solver who thrives in high-intensity environments and wants to define the future of physical innovation, this is the opportunity.

Let's connect for other opportunities as well:

We’re partnering with a rapidly growing seed stage startup that’s tackling one of the last major bottlenecks in innovation, helping industries like aerospace, healthcare, and energy move faster by modernizing how physical systems and devices are certified. Their platform makes it easier for companies with the highest standards to understand and meet complex certification requirements.

In just 3 months, they’ve generated six-figure revenue and closed a $4.5M seed round from top-tier investors behind Coinbase, Reddit, Klarna, and Spotify .

Now, they’re looking for exceptional Backend Engineers to join their founding team in London.

What You’ll Do

• Ship from Day 1: Deploy to production your first day, take full ownership of what you build.
• Build End-to-End: Design, spec, and deliver new features and services.
• Solve Hard Problems: From scaling infrastructure to improving developer experience and talking to customers, you’ll do what it takes to move the product forward.

What They’re Looking For

• 2+ years of hands-on engineering experience shipping production-grade code.
• Strong background in backend or infrastructure engineering (Python, TypeScript, Go, or Rust).
• Experience with APIs, distributed systems, databases (SQL/graph), containers, and cloud infra (AWS + Pulumi preferred).
• Proven ability to own and deliver projects with intensity and speed, bonus if you’ve been an early startup member or founder.

Why Join

• Compensation: £100k+ base salary + meaningful equity.
• Impact: A once-in-a-generation chance to shape how humanity brings new ideas into the physical world.
• Environment: In-person, high-energy team working 6 days a week in London (visa sponsorship and relocation covered).
• Support: All tools, meals, and resources provided, so you can focus on building.
• If you’re a problem-solver who thrives in high-intensity environments and wants to define the future of physical innovation, this is the opportunity.

Let's connect for other opportunities as well:

About Us:

We’re a VC-backed stealth-mode company building behavioural AI solutions for the retail industry. Our platform is designed from the ground up — no legacy, no patchwork systems — just a clean slate and a clear vision. Our mission is to bring the intelligence of modern machine learning directly to the in-store shopping experience.

Role:

We’re looking for an experienced Backend Engineer to work closely with product, design, mobile, and machine learning team members to design & build experiences that re-define in-store shopping. You'll help help build engaging & intuitive web experiences and the event-driven & real-time backend services that power them. You’ll work across the backend stack, real-time data flows and APIs on a backend designed for scale & flexibility.

Responsibilities:

• Contribute to distributed, event-driven backend services connecting our web experience with information from remote devices and external data sources.
• Build and document APIs (OpenAPI/AsyncAPI) for mobile and web clients
• Model and manage structured and semi-structured data across storage layers
• Integrate AI-driven personalisation and real-time insights into user flows
• Contribute to overall system design: service boundaries, data ownership, scaling, and observability

Essential Qualifications:

• Built modern full-stack applications w/ focus on backend (Python/Java/Go)
• Worked with a variety of storage technologies (eg. Postgres, Mongo, Redis, Object)
• Experience with async and bi-directional communication protocols and patterns (eg. WebSockets, SSE)
• Designed and implemented event-driven distributed systems (eg. Kafka/Pulsar, RabbitMQ, MQTT, or similar)
• Experience with container orchestration and service containerisation (Kubernetes, Docker)
• Built and deployed services on any major cloud providers' services (Azure, GCP, AWS)
• AI-Native development: use AI tools such as CoPilot or Cursor a collaborator and accelerator of development.

Nice to Have:

• Experience in frontend development (eg. Javascript, Typescript, React.js)
• Worked with real-time data collection and/or processing
• Worked in an IoT or Edge-oriented architectures
• Experience or knowledge in retail POS, inventory, or loyalty systems

About Us:

We’re a VC-backed stealth-mode company building behavioural AI solutions for the retail industry. Our platform is designed from the ground up — no legacy, no patchwork systems — just a clean slate and a clear vision. Our mission is to bring the intelligence of modern machine learning directly to the in-store shopping experience.

Role:

We’re looking for an experienced Backend Engineer to work closely with product, design, mobile, and machine learning team members to design & build experiences that re-define in-store shopping. You'll help help build engaging & intuitive web experiences and the event-driven & real-time backend services that power them. You’ll work across the backend stack, real-time data flows and APIs on a backend designed for scale & flexibility.

Responsibilities:

• Contribute to distributed, event-driven backend services connecting our web experience with information from remote devices and external data sources.
• Build and document APIs (OpenAPI/AsyncAPI) for mobile and web clients
• Model and manage structured and semi-structured data across storage layers
• Integrate AI-driven personalisation and real-time insights into user flows
• Contribute to overall system design: service boundaries, data ownership, scaling, and observability

Essential Qualifications:

• Built modern full-stack applications w/ focus on backend (Python/Java/Go)
• Worked with a variety of storage technologies (eg. Postgres, Mongo, Redis, Object)
• Experience with async and bi-directional communication protocols and patterns (eg. WebSockets, SSE)
• Designed and implemented event-driven distributed systems (eg. Kafka/Pulsar, RabbitMQ, MQTT, or similar)
• Experience with container orchestration and service containerisation (Kubernetes, Docker)
• Built and deployed services on any major cloud providers' services (Azure, GCP, AWS)
• AI-Native development: use AI tools such as CoPilot or Cursor a collaborator and accelerator of development.

Nice to Have:

• Experience in frontend development (eg. Javascript, Typescript, React.js)
• Worked with real-time data collection and/or processing
• Worked in an IoT or Edge-oriented architectures
• Experience or knowledge in retail POS, inventory, or loyalty systems

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  

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Blink is an employee app for frontline workers, with industry-leading engagement and a DAU of 99%. We’re dedicated to scaling our platform through precision, automation, and innovation. As part of a world-class engineering team, you’ll play a key role in shaping the future of how we support frontline workers.