21 of 21 Permanent Backend Developer Jobs in the South East

potential. Our solutions include intelligent payment routing, customized financial products, Banking as a Service (BaaS), and secure global payouts. Role Description As a Senior Backend Developer for Payomatix Technologies, you will play a critical role in designing and implementing back-end infrastructure for our fintech and payment orchestration … platforms. Responsibilities include developing scalable APIs, optimizing database performance, designing microservices, integrating various payment processors, and ensuring the reliability and security of our backend systems. You will collaborate closely with cross-functional teams to deliver cutting-edge solutions in high-risk payments, iGaming, and fintech. This is a full ...

potential. Our solutions include intelligent payment routing, customized financial products, Banking as a Service (BaaS), and secure global payouts. Role Description As a Senior Backend Developer for Payomatix Technologies, you will play a critical role in designing and implementing back-end infrastructure for our fintech and payment orchestration … platforms. Responsibilities include developing scalable APIs, optimizing database performance, designing microservices, integrating various payment processors, and ensuring the reliability and security of our backend systems. You will collaborate closely with cross-functional teams to deliver cutting-edge solutions in high-risk payments, iGaming, and fintech. This is a full ...

potential. Our solutions include intelligent payment routing, customized financial products, Banking as a Service (BaaS), and secure global payouts. Role Description As a Senior Backend Developer for Payomatix Technologies, you will play a critical role in designing and implementing back-end infrastructure for our fintech and payment orchestration … platforms. Responsibilities include developing scalable APIs, optimizing database performance, designing microservices, integrating various payment processors, and ensuring the reliability and security of our backend systems. You will collaborate closely with cross-functional teams to deliver cutting-edge solutions in high-risk payments, iGaming, and fintech. This is a full ...

potential. Our solutions include intelligent payment routing, customized financial products, Banking as a Service (BaaS), and secure global payouts. Role Description As a Senior Backend Developer for Payomatix Technologies, you will play a critical role in designing and implementing back-end infrastructure for our fintech and payment orchestration … platforms. Responsibilities include developing scalable APIs, optimizing database performance, designing microservices, integrating various payment processors, and ensuring the reliability and security of our backend systems. You will collaborate closely with cross-functional teams to deliver cutting-edge solutions in high-risk payments, iGaming, and fintech. This is a full ...

potential. Our solutions include intelligent payment routing, customized financial products, Banking as a Service (BaaS), and secure global payouts. Role Description As a Senior Backend Developer for Payomatix Technologies, you will play a critical role in designing and implementing back-end infrastructure for our fintech and payment orchestration … platforms. Responsibilities include developing scalable APIs, optimizing database performance, designing microservices, integrating various payment processors, and ensuring the reliability and security of our backend systems. You will collaborate closely with cross-functional teams to deliver cutting-edge solutions in high-risk payments, iGaming, and fintech. This is a full ...

potential. Our solutions include intelligent payment routing, customized financial products, Banking as a Service (BaaS), and secure global payouts. Role Description As a Senior Backend Developer for Payomatix Technologies, you will play a critical role in designing and implementing back-end infrastructure for our fintech and payment orchestration … platforms. Responsibilities include developing scalable APIs, optimizing database performance, designing microservices, integrating various payment processors, and ensuring the reliability and security of our backend systems. You will collaborate closely with cross-functional teams to deliver cutting-edge solutions in high-risk payments, iGaming, and fintech. This is a full ...

potential. Our solutions include intelligent payment routing, customized financial products, Banking as a Service (BaaS), and secure global payouts. Role Description As a Senior Backend Developer for Payomatix Technologies, you will play a critical role in designing and implementing back-end infrastructure for our fintech and payment orchestration … platforms. Responsibilities include developing scalable APIs, optimizing database performance, designing microservices, integrating various payment processors, and ensuring the reliability and security of our backend systems. You will collaborate closely with cross-functional teams to deliver cutting-edge solutions in high-risk payments, iGaming, and fintech. This is a full ...

Senior Backend Engineer (PHP) - Fareham - £60k + bonus and benefits (office based for the first 3 months and then hybrid thereafter) Tech: OOP, PHP, MySQL, Git Focus: TDD, Agile, systems optimisation & Greenfield development Bonus: Kubernetes, AWS/GCP, Docker An exciting new opportunity for a Senior Backend Engineer ...

Senior Backend Engineer (PHP) - OOP, PHP, MySQL, TDD - Fareham, Hampshire. This is an in office role. - Salary circa £60,000 plus benefits An exciting new opportunity for a Senior Backend Engineer to join an entrepreneurial business based in Fareham. Working within a dedicated LAMP environment and reporting ...

Senior DotNet Backend Developer – WealthTech SaaS Platform – London, UK – 6 Month Contract (Outside IR35) A global wealth management technology provider is seeking multiple DotNet Backend Developers to contribute to its core enterprise SaaS platform used by private banks and wealth management firms. We're looking for developers … wealth management. Backed Development Work across the full software development lifecycle (SDLC), from requirement gathering to testing and deployment Design and develop robust backend services using .NET Core/C# Build and maintain scalable RESTful APIs and collaborate with front-end developers on UI integration Develop and maintain Azure ...

Senior Backend Engineer, London, £60,000 - £75,000 + Benefits A Senior Backend Engineer is needed to join an ambitious and fast-scaling technology company operating within a regulated market. This role is based in central London 4 days a week on-site. As their product suite evolves … customer demand increases, they are investing in senior engineering talent to strengthen backend capability and long-term platform resilience. This hire is central to that journey, offering meaningful equity and the opportunity to influence architectural decisions at a critical stage of growth. The Senior Backend Engineer (Full Stack ...

skills can be applied meaning a vast array of opportunities are now available to you. Examples of some of these are listed below: - * Junior Developer * Website Support Developer * Junior Web Developer * Content Editor * Wordpress Developer * Junior Software Developer * Junior Front or Back End Development * Development ...

services millions of people love. And we do it all right here at Sky. What you'll do Design and implement scalable APIs and backend services, primarily in Scala, to integrate ML models into production systems and deliver personalised experiences. Real time data processing and gRPC microservices (Typelevel stack … cloud technology - even if you haven't worked extensively in ML before. Demonstrated experience designing, implementing, deploying, and maintaining production-grade APIs and backend services, including responsibility for reliability, performance, and on-call support. Hands-on experience working with data processing frameworks and distributed systems used to ingest, process ...

services millions of people love. And we do it all right here at Sky. What you'll do Design and implement scalable APIs and backend services, primarily in Scala, to integrate ML models into production systems and deliver personalised experiences. Real time data processing and gRPC microservices (Typelevel stack … cloud technology - even if you haven't worked extensively in ML before. Demonstrated experience designing, implementing, deploying, and maintaining production-grade APIs and backend services, including responsibility for reliability, performance, and on-call support. Hands-on experience working with data processing frameworks and distributed systems used to ingest, process ...

services millions of people love. And we do it all right here at Sky. What you'll do Design and implement scalable APIs and backend services, primarily in Scala, to integrate ML models into production systems and deliver personalised experiences. Real time data processing and gRPC microservices (Typelevel stack … cloud technology - even if you haven't worked extensively in ML before. Demonstrated experience designing, implementing, deploying, and maintaining production-grade APIs and backend services, including responsibility for reliability, performance, and on-call support. Hands-on experience working with data processing frameworks and distributed systems used to ingest, process ...

data scientists and chemists. All positions at CheMastery come with an extraordinary level of freedom to showcase your skill. Description The position as a Backend Python Developer is a permanent full-time position. As a Python Developer you will have be part of a brilliant software ...

financial‐industry clients is looking for a Senior Backend Developer to join their team. You'd be contributing to a new proof‐of‐concept initiative built on their enablement platform, specifically focused on bringing self‐executing smart‐contract capabilities into the loans portfolio. It's a high‐impact … days a week. We are looking for: Experience with smart contract development using Solidity, EVM chains, and Ethereum‐based technologies Strong backend engineering expertise Background in finance or crypto environments Bonus skills: Core/Advanced Java, J2EE, Spring Boot, REST APIs, CI/CD understanding, Agile experience, Angular ...

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/ ...

Back-End Developer (Go) Location: London (2 days onsite) Contract: 12 Months (Extension Possible) Experience: 3–5+ Years About the Role We are looking for an experienced Back-End Developer with strong expertise in Go (Golang) to build scalable, high-performance backend systems. You will design APIs … deployed on AWS cloud infrastructure. This role is ideal for someone passionate about data-driven systems, cloud-native architecture, and performance optimization. Key Responsibilities Backend Development Develop and maintain scalable backend services using Go (Golang). Design and implement RESTful APIs and GraphQL endpoints. Build APIs for data ...

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 ...