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Senior Java Backend Engineer | Spring Boot, Docker, Kubernetes
Senior backend engineer on the London team developing high-performance Java applications and Spring Boot microservices with RESTful APIs, CI/CD pipelines, and cloud-native tooling (Docker, Kubernetes) for automotive-brand projects under Omnicom.
Senior Java Backend Engineer - Hybrid, Madrid
NTT DATA Europe & Latam is hiring a senior Java back-end engineer for a hybrid role in Madrid. The person develops back-end services in Java using Oracle, SOAP/REST web services and JPA/Hibernate persistence, on a permanent contract with training from day one and annual promotion opportunities in a multinational environment.
Senior Backend Engineer – Real-Time Biosensor Data
Senior Backend Engineer building the digital health platform Lingo: designing, implementing, and optimizing scalable microservices and APIs that process real-time biosensor data, while collaborating with Product, Mobile, SRE, and Data/ML teams under HIPAA/GDPR compliance. Based on-site in Barcelona.
Senior Backend Engineer – Real-Time Health Data
Senior backend engineer building and optimizing scalable, secure backend systems for a digital health platform that analyzes real-time biosensor data. Day to day: leading high-performance APIs, event-driven services, and data integrations in collaboration with Product, Mobile, Platform/SRE, and Data/ML teams, based in Barcelona.
Senior Backend Engineer & Developer Advocate
A hybrid role at Quantion (Roche's tech hub) in Madrid: as Developer Advocate for the E3 platform ecosystem, you bridge global developer communities with Roche platform squads, prototype integrations, mentor internal engineers, and improve documentation, API usability, and the end-to-end developer experience.
Desarrollador Backend Senior Python/Django – Remoto
Senior Python/Django backend developer at Deutsche Telekom who designs, develops, and maintains RESTful APIs and scalable backend services, working remotely from Madrid alongside frontend, product, and DevOps teams. Valued stack includes PostgreSQL/MySQL, Django REST Framework, and cloud deployment on AWS/Azure/GCP.
Senior Backend Engineer - Banking Channel
Senior backend engineer on DK Bank's team building new corporate and API banking channels in Go: domestic and cross-border payment flows (SWIFT ISO 20022, remittances), OpenAPI-first APIs, and integrations with core banking, AML, and FX providers. Based in Kuala Lumpur, Malaysia.
Senior Backend Engineer - Payments & APIs
Senior backend engineer helping DK Bank (Bhutan) build its corporate and API banking platform in Go: OpenAPI-first APIs for payment initiation and approvals, partner integrations, and reliable domestic and cross-border payments, integrating core banking, AML, and FX providers with strong testing and observability standards.
Senior Software Engineer - Backend Development
Hybrid senior backend engineer role in Kimberley, Northern Cape, South Africa, with a technology firm recruited via Placements24: designing scalable backend services and REST APIs, optimizing database performance and security, and mentoring juniors, using languages such as Java, Python, Go, or Node.js.
Senior Backend Engineer - APIs, Scale, Hybrid
Senior Backend Engineer at Placements24 designing, building, and maintaining scalable backend services and APIs, optimizing database queries and security, and collaborating with frontend engineers and PMs in a hybrid setup based in Kimberley, Canada. Requires 5+ years of backend experience with modern languages, RESTful APIs, and databases.
Senior Java Backend Developer Montreal
12-month contract Senior Java Backend Developer in Montréal (hybrid, 3 days/week in office) building a new platform with interfaces for global onboarding and regulatory users. Core stack: Java/Java EE, REST/SOA, Spring, SQL, JUnit/BDD, Unix/Linux, with a focus on cloud adoption and UX.
Senior Backend Engineer (Python/Kotlin) - Remote-First
Senior backend engineer joining a US-founded cybersecurity software company's Belfast team in a remote-first role, building backend services, APIs and web apps across cloud services (Python/Kotlin) in a small collaborative group, with occasional frontend tasks and project ownership.
Senior Backend Engineer - C#/.NET, Microservices
Senior backend engineer hired via Forward Role for a fast-growing insurance company in Liverpool, building services with C#/.NET, SQL, and microservices; React/Next.js exposure is a plus. Hybrid setup with 3 days onsite, plus benefits like generous holidays and mental health support.
Senior Backend Engineer (Go or PHP) – Hybrid, Payments
Senior backend engineer at a payment infrastructure specialist, designing and maintaining secure services in Go or PHP using microservices, APIs and distributed systems. Hybrid role based in Fareham, UK, working alongside frontend, DevOps and security teams to ship production payments systems.