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Senior Backend Engineer
Senior Backend Engineer at a fast-paced London startup building an API-driven platform that generates high-quality test data for development and QA teams. You'll build product features, improve backend performance and scalability, and help shape technical direction using Kotlin/Java and Spring Boot in a hybrid setup.
Lead Backend Engineer — Kafka, APIs & Cloud Specialist
Lead Backend Developer on an initial 6-month London contract (hybrid, 2 days/week onsite, £650–£750/day inside IR35). Owns Kafka-based pipelines, builds scalable, secure services and APIs, sets engineering standards, and mentors the team while collaborating with product and data teams.
Python Backend Engineer — Hybrid London, REST APIs
6-month contract Python backend engineer (hybrid: two days/week in a London office) for a global data-driven technology firm, hired via Intec Select. Day to day you design, build and maintain backend services, RESTful APIs and Python microservices using Django/DRF, PostgreSQL/MySQL, cloud (AWS/Azure/GCP) and CI/CD in Agile teams.
Senior Backend Engineer, Endpoint & Data Insights
Senior backend engineer on Cisco ThousandEyes' Endpoint Engineering team, building scalable data pipelines and backend services that ingest and analyze telemetry from endpoint agents for digital experience troubleshooting. Stack centers on Java/Kotlin, Spring Boot, and cloud technologies, with on-call participation.
Staff Backend Engineer (London)
Staff Backend Engineer at Fresha (a beauty & wellness booking platform), onsite in London with remote Wednesdays. You own tribe architecture, drive cross-team backend initiatives, lead a migration toward microservices, improve stability/performance/scalability, and integrate AI agents into engineering workflows.
Senior Backend Engineer (London)
Senior Backend Engineer in Fresha's London office (4 days/week on-site) designing, building, and running scalable backend services on a microservices/Kubernetes platform, working with Ruby, Elixir, TypeScript, GraphQL, gRPC, and Kafka, and leveraging AI-assisted tooling.
Senior Backend Engineer - Credit Card Payments
Senior backend engineer who owns and shapes the payments platform behind iwoca's business card, building high-availability services for card authorisation, rewards, and fraud monitoring while scaling payments within scheme rules. Involves OO backend languages, microservices, REST APIs, async messaging, and PostgreSQL.
Senior Backend Engineer - Introducer Tech
Senior backend engineer at iwoca who owns the Lending API for Germany end-to-end: shaping the developer portal, partner tooling and docs, automating broker/CRM workflows, and mentoring engineers. Core stack is production Python (Django preferred; FastAPI/Flask acceptable) with PostgreSQL.
Backend Engineer - Credit Card Payments
Senior backend engineer on iwoca's small Payments infrastructure team, building the card payments platform behind its business credit card: real-time payment authorisation, transaction fraud/financial-crime screening, and cashback rewards. Core stack is Python with microservices, REST APIs, async messaging and PostgreSQL, plus deep card-scheme and ledger expertise.
Hybrid C# .NET Backend Developer – Mid-Level
Mid-level C# .NET backend developer for a permanent hybrid role in Taunton, Somerset, joining an expanding development team. Day to day involves designing and building scalable backend systems, writing clean documented code, participating in code reviews, mentoring junior developers, and optimising performance in an Azure-hosted environment.
Backend Engineer (Software)
Security-focused backend engineer at an early-stage AI startup in London. Day to day you threat-model and penetration-test AI-driven workflows, own identity and access controls, and contribute backend code to fix vulnerabilities and embed security across the product alongside founders and engineers.
Backend Engineer
Backend engineer building scalable Python services and cloud-native applications on AWS for an automotive-tech company in London (hybrid). Day to day: microservices development, architecture and code reviews, cross-team collaboration, and mentoring. Stack: Python (Django/FastAPI), AWS, PostgreSQL, optionally Kafka/Kubernetes.
Back-End Developer (Python | Application Development)
Design, build, and maintain scalable Python back-end services and RESTful APIs on cloud-native AWS infrastructure (Lambda, ECS, S3, RDS), supporting investment operations and analytics in a London financial services environment. Includes CI/CD, infrastructure as code, and integration with third-party financial data providers in a hybrid work model.
Backend Engineer - Send Core
Backend Engineer on Wise's Send Core team in London, owning the critical infrastructure every money-sending transaction flows through and building customer-facing send-journey products. Requires strong CS fundamentals and a product mindset; hybrid work, salary £68,000–£87,500.
Senior Software Engineer (Backend) - C&C
At Bazaarvoice, we create smart shopping experiences. Through our expansive global network, product-passionate community & enterprise technology, we connect thousands of brands and retailers with billions of consumers.…
Staff Backend Engineer (Golang) - BeReal
About Voodoo Founded in 2013, Voodoo is a tech company that creates mobile games and apps with a mission to entertain the world. Gathering 800 employees, 7 billion downloads, and over 200 million active users, Voodoo…
Senior Backend Engineer (Golang) - BeReal
About Voodoo Founded in 2013, Voodoo is a tech company that creates mobile games and apps with a mission to entertain the world. Gathering 800 employees, 7 billion downloads, and over 200 million active users, Voodoo…
Software Engineer, Backend
Build backend systems that make Adaptyv's automated biology lab programmable: data pipelines for large-scale protein characterization data and APIs that integrate lab instruments and robotics, working closely with scientists. Stack: Python, TypeScript, Postgres.
Java Backend Developer
Job description: Java Backend Developer is responsible for developing and maintaining server side applications, ensuring high performance and responsiveness, and collaborating with front end developers to create…