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Senior backend engineer who owns the full backend lifecycle at an AI-first product company: designing scalable Python/FastAPI services and REST APIs, integrating LLM/AI services with PostgreSQL, Redis and vector databases, deploying with Docker/AWS, and mentoring junior developers. Full-time on-site in Gurugram.
Freelance senior Python backend developer for an AI project in the Milan area: building backend services with FastAPI, agentic multi-turn RAG architectures using LlamaIndex and Gemini, and a PostgreSQL (pgvector/FTS) + Redis data layer. Hybrid, with 2 days/week on-site in Segrate, engaged through the Shakers talent marketplace.
LinuxRecruit is hiring a Senior Backend Engineer for its new AI-focused engineering hub in London to build scalable backend services, high-volume data systems, and cloud-native, security-focused products, working alongside machine learning researchers and security experts.
DFYNE (a UK activewear brand) is hiring a Senior Backend Engineer in Uddingston to own and strengthen the backend platforms behind its product ecosystem, focusing on reliability, performance, and scalable design. Day to day the role involves hands-on engineering, mentoring staff, improving observability, and setting technical standards.
Senior backend engineer building cloud-native systems for an insurance product portfolio used by international businesses, working mainly in C# and/or Python in a small, agile London team. The role contributes to AI-enabled engineering productivity and architecture, hybrid: three days in City offices, two remote.
A senior backend developer role in Gloucester building scalable Java and C++ backend services and APIs in a secure, Linux-based Agile environment. The engineer shapes software architecture, ensures secure reliable solutions, and mentors colleagues on an experienced engineering team.
Senior backend engineer on LinuxRecruit's newly formed London team, building and operating scalable, production-grade cloud-native SaaS applications. Work spans data processing, APIs and customer-facing functionality, with end-to-end ownership from design and coding through deployment and operation at scale.
Sanderson is hiring a Senior Backend Engineer in Gloucester to build high-performance backend systems in Java and C++, working with microservices and scalable architectures on Linux, while mentoring engineers and contributing to CI/CD and DevSecOps initiatives. SC clearance is required.
A hands-on senior backend engineer at DFYNE (a UK activewear brand) who owns critical production backend services and APIs, improving their reliability, scalability and maintainability while supporting architecture, incident response and mentoring. Core stack: TypeScript or Python, relational databases and Google Cloud Platform.
Design, build, and maintain secure, scalable backend services with TypeScript on a serverless AWS stack (Lambda, API Gateway), working in an agile team with a strong emphasis on clean code, testing, and CI/CD.
Senior Backend Engineer building scalable Java/Spring Boot services on AWS for high-volume transactions in Manchester. Day to day involves shaping features with product teams from concept to launch and ensuring reliability and performance in production.
Senior backend engineer on the Partner Merchant Interface Integration team, building and maintaining the APIs that partners and merchants use to integrate with the company's buy-now-pay-later credit platform, powering partners like Amazon and Stripe. Core stack: Python or Kotlin, AWS, MySQL, Kubernetes.
Talanto is hiring a Senior Backend Engineer in Canada to own and evolve the Partner Merchant Interface — the APIs used by partners and merchants such as Amazon and Stripe. Day to day you design, develop, and deploy backend services at scale using Python or Kotlin within a global engineering team.
Senior backend developer at CIBC's Digital technology group in Toronto, leading API design and development for online banking using Java microservices and cloud platforms. The role also involves mentoring junior developers, improving performance, and shaping enterprise solutions in a hybrid setup.
Senior backend developer on Coveo's R&D Backend Foundation team, building the core libraries, tools, golden paths, and the internet-facing API entry point of the Coveo Platform. Day-to-day involves backend development in Java/Spring Boot on AWS, platform/infrastructure work, and advising R&D teams on engineering practices.
Senior Backend Engineer / Solution Architect for Globus Systems' India subsidiary: design, build, and maintain scalable backend systems, APIs, and microservices using PHP, Laravel, Vue, TypeScript, and AWS, while leveraging AI coding tools (GitHub Copilot, Claude Code) to ship production code. Work-from-home role across India for immediate joiners.
Senior backend/integration engineer who builds and maintains connectors to identity verification, authentication, and IAM platforms end-to-end — from vendor API docs to production code handling PII safely. Core stack is Node.js + TypeScript with MongoDB, microservices, and identity protocols like OIDC, OAuth 2.0, SAML, and SCIM.
Senior backend developer who designs, builds, and maintains scalable Java applications backed by PostgreSQL and MongoDB, handling database integration, data modeling, query optimization, and performance tuning. Requires 8+ years of Java experience.
Senior backend engineer modernizing loan verification and high-volume bank data ingestion systems. Day to day: building scalable Java/Spring Boot microservices with event-driven messaging (JMS) on GCP/AWS, implementing service-level security, and using AI-native tools like Cursor for high-velocity delivery.
Senior backend Java developer for a stable end-client company (empresa final) in Barcelona, hybrid with ~2 remote days/week. Work on tech migration, an environmental-area module renewal, and new business features. Needs 5+ years of Java and relational DB experience; Angular knowledge is a plus. €40k–45k gross/year, 37.5h week.
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