26 to 43 of 43 Permanent Backend Developer Jobs

Senior Backend Engineer/Head of Backend Development (Python/AWS) Fintech | NYC (Remote) | No C2C | Full-time role Compensation : £90,000–£120,000 (negotiable for star talent upon tech test) We are working with a well-funded fintech platform transforming how complex financial data flows across global … products. ● Shape the architecture, cloud strategy, and engineering culture of a venture-backed fintech at an early stage. The Role This is a senior backend role focused on designing and scaling the core engine that powers ingestion, validation, and distribution workflows. The environment demands production-grade reliability, security ...

empowers young individuals to achieve their financial goals with confidence and ease. Role Description This is a part-time remote role for a Go Backend Developer. The ideal candidate will collaborate with the development team to build and maintain robust backend systems for BabyReady’s platform. … tasks include designing, constructing, optimizing, and deploying backend services, APIs, and database management systems. The role heavily emphasizes software craftsmanship, programming in Go, and robust system implementation for delivering scalable and efficient solutions. This is a part-time role (~20 hours per week) with fully flexible working hours. Work ...

Founding Backend Engineer | PostgreSQL, GCP & Distributed Systems | AI Music Creation Platform Salary: £60,000-£100,000 Location: Victoria, London The Role You’ll join a small founding team building a browser-based platform designed to make creating music as universal as listening. The product already has 100,000+ users … over 1M songs created. As the Founding Backend Engineer, you’ll own the backend systems powering payments, collaboration, and media infrastructure as the platform scales to millions of users. What They’re Looking For (Non-Negotiables) You’re a backend engineer who enjoys designing systems properly ...

Cloud Backend Engineer (Python/AWS/Kubernetes) 🚀 📍 London (Hybrid) 📅 ASAP - End May 💰 Competitive Day Rate – Outside IR35 We’re supporting a highly PE-backed Professional Services organisation building cloud-native, AI-enabled applications within tax advisory. This is a hands-on engineering role sitting within a cross-functional … delivery squad. You'll be building backend APIs and deploying them into a modern AWS + Kubernetes environment. 🔑 The Role • Building backend APIs in Python (FastAPI ideally) • Working with PostgreSQL • Deploying services into AWS (EKS preferred) • Managing container workloads in Kubernetes • Building infrastructure with Terraform • Implementing CI/ ...

Senior Backend Engineer | Digital Payments | FinTech | Hybrid/Remote | £90k Company Overview: A fast-growing global FinTech company building modern, on-chain financial infrastructure for payments, banking, and investments across 140+ countries. Role: We’re hiring a Senior Backend Engineer to join a Digital Payments team working … high-scale systems that integrate with global bank networks, card schemes, and modern payment methods. You’ll own core backend services, influence architecture, and help move millions in daily transactions. Requirements: • 5+ years backend engineering experience. • Strong JavaScript/TypeScript/NodeJS expertise. • Experience with microservices, REST APIs ...

Senior Backend Engineer £80,000 – £110,000 | London (Hybrid – 3 days in office) The Opportunity We’re partnered with a scaling, venture-backed SaaS business delivering a mobile-first platform used by large distributed workforces across global enterprise organisations. This is not greenfield development and it’s not legacy … with strong product traction, enterprise customers, and continued platform evolution across both technical and commercial areas. You’ll be joining an organisation solving complex backend and platform engineering challenges at scale, supporting a product that is already widely adopted while helping shape its future architecture. The Product The platform ...

enabled applications within tax advisory. This is a hands-on engineering role sitting within a cross-functional delivery squad. You'll be building backend APIs and deploying them into a modern AWS + Kubernetes environment. 🔑 𝗧𝗵𝗲 𝗥𝗼𝗹𝗲 • Building backend APIs in Python (FastAPI ideally) • Working with PostgreSQL • Deploying … Terraform • Implementing CI/CD pipelines (GitHub Actions, GitLab, Jenkins, ArgoCD) • Shipping production-grade cloud-native applications 🎯 𝗪𝗵𝗮𝘁 𝗪𝗲’𝗿𝗲 𝗟𝗼𝗼𝗸𝗶𝗻𝗴 𝗙𝗼𝗿 👉 Strong Python backend development experience 👉 API development (FastAPI highly desirable) 👉 Solid SQL/PostgreSQL knowledge 👉 AWS experience (EKS ideal) 👉 Kubernetes deployment experience 👉 Terraform (Infrastructure as Code ...

Role : Senior Python Backend Engineer Location : London King's Cross - full time on site Salary : up to £200k base + equity We are partnered with a high-growth AI-driven platform that helps large enterprises automate complex, data-heavy workflows. The company is well-funded with. over $90M from … scaling rapidly, and already working with globally recognised organisations in a highly regulated environment. The Role As a Senior Backend Engineer , you’ll help design and scale the backend systems behind a sophisticated AI platform. You’ll work on high-performance services, complex data pipelines, and secure infrastructure ...

Back End Developer This is a fantastic opportunity for an experienced Back End or Full Stack Developer with a robust background in commercial web and application development, to join the talented team at Bolser, delivering exceptional digital solutions for some of the world’s biggest brands, including Microsoft … Xbox, Budweiser, RAF Museum, and the Football Foundation. What You'll Do - Build and maintain backend services - Deploy and manage applications on AWS or Azure - Write well-tested, production-ready code using modern development practices - Collaborate with designers and developers to deliver client projects end-to-end - Review code ...

Back End Developer/Software Engineer (TypeScript Node AWS) Remote UK to £90k Are you a data savvy Software Engineer with strong backend development experience using TypeScript and Node? You could be progressing your career in a senior, hands-on Back End Developer role at a scaling … Fintech who have built an energy trading platform to revolutionise energy buying for large industrial and commercial users. As a Back End Developer you'll help to build a seamless digital experience that makes complex energy systems simple, powerful and intuitive. You'll be building resilient, modular backend ...

Senior Backend Engineer – Remote first, London office (UK) 💰 £65k–£75k | ⏳ Full-time, 4-day work week I’m working with an exciting client who is looking for a Senior Backend Engineer to join their mission-driven team transforming frontline public services with AI. This is a unique opportunity … well being and justice, reduce admin, improve compliance, and spend more time on meaningful human work. What You’ll Do: Build and scale core backend systems, APIs, data pipelines, and integrations Collaborate with CTO, product, and design teams to deliver tools used by real frontline workers Write maintainable, tested ...

Title: Software Engineer – Backend Contract Duration: 6 months, with potential for extension Location: Remote (UK) Job Description: The Indexing Team is a team within ML that focuses on indexing. Indexing refers to processing data and making the processed data available for different purposes, which include, among others, indexing … processed as they occur, or asynchronously, by fetching the data in batches from a specific data source. We work closely with different teams, with backend engineers and MLEs, to both connect the Indexing Platform to the different ML services in the client, as well as to provide the right ...

Back End Developer/SRE (Java JVM) London/WFH to £110k Are you a Back End Developer/SRE with a strong knowledge of Java and JVM internals? You could be progressing your career in an impactful role at a global Fintech that has been consistently voted … organising events and projects that foster an open, diverse and inclusive culture Plus a range of other perks Your role: As a Back End Developer/SRE you will collaborate with development teams, as a trusted technical advisor to influence system design, ensuring reliability standards and driving improvements across ...

Salary up to £60,000 negotiable, depending on experience + benefits This is a great opportunity to work for an established and fast growing business, where you will have the opportunity to develop a worthwhile ...

real-world scenarios. The founding team is technical, and we're at the stage where the core product works and now needs production-grade backend infrastructure to scale. The role : You'll be our second backend engineer, working directly with the technical founder. This is a build-from … scratch opportunity. You'll own the core backend infrastructure: designing the unified AI API platform, implementing billing and usage metering, architecting databases and data pipelines, handling high concurrency and auto-scaling, and maintaining real-time voice room infrastructure. You won't be slotting into an existing system. ...

rapidly scaling SaaS business, for multiple Full Stack Developers (junior to senior level, including a strong No.2 role) to help build and scale the backend of their systems. This is a backend-heavy role, but with opportunities to contribute across the stack. You’ll be building robust APIs … databases, and working on applications that power solicitor workflows and CRM platforms. What you’ll do Design, develop, and maintain Java/Spring-based backend systems. Architect and formally structure efficient, scalable databases. Build APIs and integrations to power responsive web applications. Work closely with front-end developers ...

Software Software Engineer - London (Uxbridge) (Hybrid/2days onsite) - Up to £100K + Bonus TogetherWeTech is hiring a Backend Engineer for their progressive Computer Vision (AI) client that focuses on end-to-end security solutions. As a Backend Engineer, it's a great opportunity to play an integral … role in developing and maintaining their backend systems. Whilst working on challenging projects, collaborating with cross-functional teams, and having the opportunity to influence the architectural decisions that drive the product's success. Key Benefits: Competitive bonus Private Health Insurance Dental Insurance Stock options Personal development training budget ...

Title: Mid Level Back End Developer Salary: £55,000 Location: East Yorkshire – 4 days onsite A growing technology business is looking for a Mid Level Back End Developer to join its product engineering team. The company builds SaaS platforms that support complex commercial operations. Their products integrate with … manage high volume transactional workflows. The engineering team is expanding as the platform continues to evolve and scale. The Role This is a backend focused position centred on building and improving core services and APIs. You will: Develop backend services using Node and Typescript Build and maintain GraphQL ...