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stacktech pte. ltd.

Senior Java Backend Engineer (Oracle & PL/SQL

Senior Java backend developer in Singapore's Central Area who designs, builds, and maintains enterprise Java services plus Oracle database business logic. Heavy focus on PL/SQL (stored procedures, packages, functions, triggers) and SQL performance tuning, using Java SE/EE, Spring Boot/MVC, MyBatis, and RESTful APIs; MongoDB/ClickHouse exposure is a plus.

AI API Claude Code ClickHouse Git +16 skills

Senior Backend Engineer II, Data & Agentic Context Platforms

North AmericaFull-timeSenior

Senior backend engineer on Fetch's Data & Agentic Context Platforms team, designing and operating the APIs, data pipelines, and storage/retrieval systems that serve trusted organizational and user context to AI agents at scale. Work centers on distributed systems, streaming/batch data infrastructure, and vector/search retrieval on AWS.

Agentic AI API Assembly AWS CI/CD +17 skills

190K – 224K $

[1298] Pessoa Desenvolvedora Backend .NET MVC Sr (Remoto)

RemoteLATAMSenior

Senior backend developer working remotely from Brazil, building and maintaining internal systems and tools for a multinational packaging company's multidisciplinary team. Core stack is .NET Core, MVC, C#, Entity Framework, and SQL Server, with Git and agile practices.

AWS C# .NET Git JavaScript +4 skills

Senior Backend Engineer - Cloud Microservices & AI Focus

Copello is hiring a Senior Backend Engineer in London to build cloud-based distributed systems and scalable microservices using Java, Python, Rust, and C++. The role involves maintaining CI/CD pipelines, working in a mature agile environment, and exploring AI/ML innovations for its product range.

Agile AI CI/CD Cloud C++ +5 skills

Traveltechessentialist

Senior Backend Engineer, AI-Driven Platform & Scale

Senior backend engineer at Navan scaling the core services behind its AI-first corporate travel and expense platform — building payments, card issuing, and accounting integrations plus automated policy and admin controls, with a focus on reliability, testing, and monitoring on a global cross-functional team.

Senior Java Backend Engineer - API, Kafka, AWS (Hybrid)

Senior Java backend engineer at a London scale-up software house building a financial Tech for Good payment platform. Day to day, the person develops backend features for the payment platform, gateway API and web portal using Java, Kafka, AWS and PostgreSQL, in a hybrid model (3 days on-site in London, 2 remote).

API AWS Java Kafka PostgreSQL

Zopa Bank Limited

Senior C# Backend Engineer – Fintech, End-to-End Impact

Zopa Bank is hiring a Senior C# Backend Engineer to shape technical direction across its product-engineering tribes at its London-based digital bank. Day to day, they own complex work from idea to production, mentor engineers, drive quality, and build robust banking services with C#, Kotlin, Kafka, Kubernetes, Docker, and AWS Aurora Postgres in a hybrid role.

Aurora AWS C# Docker Kafka +3 skills

Senior Backend Engineer — Cloud-Native Microservices

Software Engineer II at JPMorgan Chase in London, designing, building, and scaling microservices for the GBP Global Banking Platform, including a secondment to a fintech partner. The role focuses on secure production-grade code, CI/CD, and driving the platform's cloud adoption.

CI/CD Cloud Fintech Microservices

Additional Resources

Senior C++ Backend Engineer (Linux) - Relocation + Benefits

A senior backend engineer designing, developing, and maintaining C++ and Java applications on Linux, leading technical work on components, services, and APIs with a focus on performance and security. The role includes mentoring, architecture decisions, and driving CI/CD and DevSecOps practices with Docker and Git; SC clearance is required.

API CI/CD C++ DevSecOps Docker +3 skills

Senior Backend Engineer - Hybrid London | Java & Spring

Rightmove is hiring a Senior Backend Engineer in London (hybrid, two office days per week) to design, build, and own features end to end using Java 17+, Spring Boot, Elasticsearch, Kafka, Couchbase, and Docker, with a focus on performance and scalability.

Docker Elasticsearch Gradle Hibernate Java +3 skills

Kx Systems, Inc.

Senior Java Engineer - Spring Backend, Secure, Hybrid

Senior Java engineer on KX Systems' R&D team building backend and middleware services in Java 17 and Spring, integrating with kdb+ in a distributed, high-availability system. Focus areas include authentication/authorisation, security best practices, CI/CD with DevSecOps, and deployment on Tomcat. Hybrid role across London, Newry, and Belfast.

Authentication CI/CD DevSecOps Java Spring +1 skills

Senior Backend Developer

Open 99d LATAMSenior

Develops and maintains Java-based backend systems using cloud platforms and modern DevOps tools in an Agile environment.

Agile AI AWS Azure Express.js +8 skills

Senior PHP Backend Engineer: Innovate & Own Complex Systems

CareerValue is hiring a senior PHP developer who spends roughly 90% of the time on back-end work (with occasional front-end tasks) and takes ownership of complex systems with strong autonomy in a startup-like environment. Core stack is PHP with Symfony or Laravel; salary €3,500–€4,700 gross per month plus pension and 25 vacation days.

Laravel PHP Symfony

4K – 5K € / mo

Digital Newsgroup (DNG)

Senior PHP/Laravel Backend Engineer: AI & Data

Digital Newsgroup in Tilburg (NL) seeks a senior PHP/Laravel developer to advance its AI-driven marketing platforms, working on core components around data analysis, automation, and ML deployments. The role involves close collaboration with UX/UI and input on strategic technology choices.

AI Machine Learning

Senior .NET Backend Engineer - AI-Driven SaaS

Zenya is hiring an experienced .NET backend engineer to build and improve software for healthcare professionals: designing scalable clean-architecture solutions, REST APIs, SQL Server optimization and Azure infrastructure, while mentoring mid-level developers. AI tooling is integrated into the daily work and SDLC.

AI API Azure .NET REST +3 skills

Vitec Forsikring AS

Senior .NET Developer: Azure Backend & APIs (Hybrid)

Olyslager (part of Vitec Software Group) in Bunschoten-Spakenburg, Netherlands, seeks a medior-to-senior .NET developer to build backend services and APIs on Azure within a four-person team working on business-critical software. Hybrid work with home-office options; independent, proactive working style expected.

Senior .NET Backend Developer: Azure REST APIs

Senior backend developer at Digis Corp in Amsterdam who designs and maintains REST APIs for Azure infrastructure. Core stack is .NET/C# with 5+ years of experience and at least 2 years managing Azure resources, in a collaborative, mature engineering environment.

API Azure C# .NET REST

Senior Backend Engineer Go/Rust Kaseya

North AmericaSenior

Builds and operates backend services for the Kaseya Intelligence Platform in Go or Rust — covering API access, event routing, Kafka-based event-driven integrations, secrets management, and deployment pipelines — with 5+ years of backend experience and a focus on production reliability.

API Authentication Event Driven Architecture Kafka Rust +1 skills

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

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.