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Senior Backend Engineer - Java/Python/Node (Remote)

North AmericaSenior

Senior backend engineer leading development of scalable microservices built with Java, Python, and Node.js. Day to day involves architecting production-ready services, driving performance and CI/CD improvements, expanding testing coverage, and following enterprise-grade engineering practices in collaboration with cross-functional teams.

CI/CD Java Microservices Node.js Python

Backend Engineer

Backend Engineer at Cambio, a YC-backed startup building an AI-driven decarbonization and asset management platform for commercial real estate. Day to day: build Django backend services, optimize performance, and pay down tech debt with Python, AWS, Kubernetes, and PostgreSQL in an in-person Kitchener-Waterloo (or NY/SF) office.

AI AWS AWS Bedrock CDK CSS +13 skills

Backend Java Developer

Design, develop, and maintain high-performance, secure backend systems for Brightstar Lottery's lottery solutions using Java 17+, Spring Boot, and PostgreSQL, deployed with Docker, Kubernetes, and Helm. Works in distributed Agile teams, contributes to design discussions, and mentors junior developers.

Agile AI Automation Bash CI/CD +31 skills

Evolution Gaming Limited

Backend Developer (Scala)

We are searching for passionate Scala Engineers . We thrive in well-designed, scalable, systems which use modern functional programming based design approaches. We believe that the functional programming approach in…

Docker Haskell JVM Kubernetes Scala

NodeJS Backend Developer

Builds and maintains the backend of Diagnostyka's medical mobile app and patient-facing services in Node.js (TypeScript/NestJS) — 70% new features, 30% maintenance. Works with Firebase, Google Cloud Functions/GCP, PostgreSQL/MySQL, Docker and CI/CD in a Scrum team, hybrid or on-site in Kraków.

API CI/CD Cloud Docker Firebase +14 skills

17K – 22K PLN / mo

Senior Backend Engineer - .NET Core, Remote

Snoonu, Qatar's homegrown super app, is hiring a senior backend engineer to design and optimize backend services and databases and help shape scalable system architecture. Core tech is .NET Core, with 7+ years backend experience and strong emphasis on performance, testing, and code quality.

Principal Backend QA Engineer (AI)

LATAM, North AmericaContractPrincipal

Nexaminds is hiring an SDET Architect (Principal-level) to lead enterprise quality engineering: defining test automation strategy across UI, API, integration, and data layers, architecting Java-based frameworks (Selenium/Playwright, Postman/RestAssured), enforcing CI/CD quality gates, and driving responsible AI/LLM adoption in QA workflows while mentoring SDETs.

Agentic AI AI API Automation LLM +6 skills

Senior Software Engineer - Backend

A senior backend engineer will design, build, and maintain scalable server-side applications and APIs that power the client's core business functions in Stellenbosch, while mentoring junior engineers and shaping architecture. Core stack includes backend languages like Python, Java, Go, or C#, relational/NoSQL databases, microservices, and RESTful APIs.

API Api Design C# Design Patterns Java +6 skills

DataOps Engineer: Cloud Data Pipelines & Backend

DataOps Engineer at 24i's Personalization team in Madrid: build and maintain Python backend services, data pipelines, orchestration, and observability on AWS, keeping personalization data flows reliable and scalable while collaborating across teams.

All European Careers

Senior Back-End Java Developer - Spanish/English

Fully remote senior back-end developer building client software solutions with the Java/Spring stack in an agile team (pair programming, code reviews, sprint ceremonies). Requires 5+ years of commercial Java experience plus Spanish and English, with up to 5 office days per quarter in Murcia.

Agile Java Spring

Senior Java Developer | Spring Boot, DDD & AI-Driven Backend

Sngular's León office is hiring a Senior Java Developer to design and build scalable backend solutions using Java, Spring Boot, Hexagonal Architecture and DDD, integrating AI to optimize code and processes. The role involves working with multidisciplinary teams, leading technical improvements, and defining architecture for new solutions.

Remote Senior Java Developer — Scalable Backend

Plexus Tech is hiring a Senior Java Developer to build highly scalable backend services 100% remotely from Almería, Spain, joining a team of 5,000+ professionals on a permanent contract. Core stack: Java (8+ years), Spring Boot, reactive programming, gRPC/Protobuf, Kafka, and AWS.

AWS gRPC Java Kafka Protobuf +1 skills

Java backend Developer for Space Traffic Management Projects

Backend developer at GMV in Madrid building new backend functionality in a microservice-based architecture for Space Surveillance and Tracking (SST) and Space Traffic Management projects, including data model design, message brokers, and container management. Core stack: Java (Spring Boot/Hibernate) or Python, Docker, relational databases, REST APIs.

API Django Docker FastAPI Flask +10 skills

Ust España & Latam

Mid Java Backend Developer (Azure) - Remote Spain

Mid-level Java backend developer working 100% remotely from Spain: designing and maintaining backend services, integrating REST APIs, and collaborating with React frontend teams. Core stack includes Azure, Java, Spring Boot microservices, Docker, OpenShift and PostgreSQL.

API Azure Docker Git Java +4 skills

Remote Backend Developer (C# & SSIS) – ETL & SQL Expert

Backend developer building ETL and SQL solutions with C#, .NET, SQL Server and SSIS for an international project at MindMatch in Alcobendas, Spain. Hybrid role with a permanent contract and immediate start; WCF, NuGet, SonarQube, jQuery, Angular and Node.js experience is a plus.

Angular C# .NET ETL jQuery +5 skills

Backend Developer (C# - Ssis) - (Hybrid, 36-40K)

Backend Developer (C# - SSIS) - (hybrid, 36-40k) MindMatch Alcobendas, comunidad de madrid, Spain Descripción del trabajo At SQUAD Technology Solutions , an IT outsourcing company, we are building a small, agile team…

Agile Angular Confluence C# DevOps +10 skills

All European Careers

Remote Senior Java Backend Developer | Agile + English

RemoteEuropeSenior

Fully remote senior back-end developer building robust Java/Spring solutions within an agile team, with occasional on-site visits to Murcia (up to 5 days per quarter). Day to day involves coding, code reviews, and sprint ceremonies; strong English is required and improving Spanish is encouraged.

Agile Java Spring

Java Backend Developer - Hybrid, International Team, Growth

Mindmatch in Barcelona is hiring a Java Backend Developer for an international team on a hybrid schedule (2 days office, 3 days remote). The role involves building and maintaining backend systems in Java 17 and Spring with a focus on microservices and performance, plus occasional Angular frontend work.

Angular Java Spring

Decskill España

Backend Developer L Multinacional Tecnológica

BackEnd Developer l Multinacional tecnológica Decskill España Murcia, huerta de murcia (comarca); región de murcia, Spain Descripción del trabajo En Decskill, creemos que la excelencia tecnológica nace del talento…

Agentic AI AI Analytics API Azure +14 skills

970 KING SHARED SERVICES S.L.

Backend Developer | Catalog Games

King (the Candy Crush maker, part of Microsoft) is hiring a mid-level Java backend developer in Barcelona to build and maintain game features, services, tools, and shared Java server frameworks for its Catalog Games titles. Day to day you own features across the full backend lifecycle — design, implementation, testing, deployment, monitoring, and production support of large-scale, real-time system

Bash CI/CD Cloud CSS Design Patterns +11 skills