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Fully remote, long-term B2B contract via 1dea for a Senior Backend / Data Developer building backend and data solutions for a client, centered on data storage and search technologies: MongoDB, PostgreSQL, Virtuoso Triple Store, and OpenSearch. Rate is 130–155 PLN net/hour; 6+ years of commercial experience required.
Senior backend engineer who designs and builds automation tools and services supporting Security Operations Center processes like bot detection, fraud mitigation, and phishing detection. Core stack is Python, microservices, Kubernetes, SQL, and message queues, at the fully remote company behind the hCaptcha security suite.
Enfint is hiring a Senior Java Backend Engineer in Amsterdam to own end-to-end backend services supporting logistics, import/export, and customs information flows. The core stack is Java, Spring Boot, Docker, and Kubernetes/OpenShift, working closely with DevOps and Agile teams.
Senior backend developer building and maintaining Online Soccer Manager at Miniclip: expanding features while optimizing performance, uptime, refactoring and debugging in a multidisciplinary DevOps team. Core stack is .NET Core/C# microservices on Kubernetes, with RabbitMQ for messaging and Google BigQuery for analytics.
Happy Horizon is hiring a medior/senior PHP backend developer in Tilburg (NL) to lead backend development of scalable e-commerce solutions using Magento, Laravel, Symfony and commercetools, building data structures in MySQL/Elasticsearch and integrating with PIM/ERP/CRM systems.
Senior .NET back-end engineer at Innovecs (an outsourcing firm) building an application for a US client whose freight procurement platform serves the trucking industry. Day to day involves designing and developing .NET back-end services, working remotely-first with flexible hours for candidates based in Latin America.
Senior backend engineer on Navan's AI-first team in Berlin, architecting and scaling backend services for a next-generation corporate expense platform — including global commerce, payments, ledgers, policy automation, and accounting integrations. Core stack is Java/Spring Boot on AWS with microservices and AI-driven features.
Senior Python backend developer who owns a financial batch processing engine that turns daily financial events into millions of journal lines within a fixed batch window. Day-to-day work centers on Python (FastAPI/Django/Flask), heavy set-based SQL/PostgreSQL, concurrency and performance tuning, batch orchestration, REST APIs, and message queues.
Senior Java backend engineer at payroll/payments fintech Ipayroll, owning services for payments, multi-currency balances, and onboarding from design through production. Day to day involves AWS, microservices, and API architecture decisions, plus mentoring engineers; hybrid work with some travel to Christchurch.
Senior backend engineer at Grab building and maintaining scalable Go microservices that power services used by millions across Southeast Asia. Day to day involves driving architectural improvements, performance tuning, and reliability work with cross-functional teams, onsite in Petaling Jaya, Malaysia.
Design and build scalable server-side Node.js services and APIs using microservices architecture at amIT Global Solutions in Kuala Lumpur. Day to day you collaborate with front-end teams, write unit tests, optimize performance, and mentor junior developers.
SIBYL is hiring a Senior Backend Engineer to build and scale core services of the Sibyl Ecosystem — owning microservices, designing high-throughput APIs, and contributing to the Autonomous DB query engine for enterprise clients in banking, retail, healthcare, and government. Stack: PHP/Laravel, Go, Python, PostgreSQL, Redis, Kafka, Kubernetes.
Senior backend engineer who architects, builds and scales a cloud SaaS platform that turns thousands of real-time manufacturing video feeds into actionable insights. Works primarily in Python (FastAPI, SQLAlchemy, Postgres) on AWS with Docker/Kubernetes, Terraform and CI/CD, collaborating with the Head of Engineering and AI R&D.
Shopee is hiring a senior backend engineer/technical lead in Singapore to guide end-to-end projects on its marketplace platform, building scalable backend systems for returns, refunds, and settlement while introducing AI-powered tooling. Core stack includes Golang, Python, Java, or C++ with distributed systems design.
Senior Backend Engineer in Singapore who designs, develops, and maintains the cloud application stack for Screening Eagle and Proceq tools, ensuring resilient service delivery. Day-to-day work centers on Go, distributed systems, data structures, APIs and integrations, DevOps practices, and mentoring junior developers.
Senior backend engineer in Singapore building payment systems and switching platforms, primarily in C++ on Linux (RHEL) with AWS Cloud and PostgreSQL. IBM MQ and Base24-eps knowledge is a plus; the role requires 5+ years of backend experience and strong cross-team communication.
Senior backend engineer owning end-to-end backend systems — APIs, distributed services, data pipelines, PostgreSQL, and blockchain indexing — for a well-funded Web3 company's consumer products. Requires strong TypeScript and production-scale experience, plus existing hands-on Web3/DeFi infrastructure work.
Senior Backend Engineer designing and scaling high-performance, mission-critical transaction systems in C#/.NET Core (plus a secondary language like Go/Java/Python). Day to day: building cloud-native services, tuning databases and performance, doing code reviews, mentoring juniors, and automating deployment pipelines on cloud platforms like AWS, Azure, or Alibaba.
Senior Backend Engineer (6+ years) in Singapore building and scaling high-throughput, high-performance transactional systems. Day to day: hands-on backend development with a focus on reliability and code quality, mentoring juniors via peer reviews, and optimizing deployments and monitoring.
A senior backend engineer who takes end-to-end ownership of backend systems for consumer products: designing APIs, building scalable services, and running data pipelines that span Web2 and on-chain components, with a focus on reliability and performance at scale. Core stack: TypeScript and Web3.
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