8,412 Senior Backend jobs
Senior backend engineering roles owning server-side systems and APIs.
Senior Java Backend Engineer - Banking, Hybrid Warsaw
Senior Java backend developer building banking applications for a Devire client in Warsaw, supporting structured finance, liquidity calculations and regulatory reporting. Core stack: Java, Spring/Spring Boot, Jenkins, Maven. Hybrid role (3 days/week on-site), B2B contract.
Senior .NET Developer - Backend & API (Hybrid)
Integral Solutions seeks a senior .NET developer to design and build .NET applications, create API services, and refine business logic in a hybrid role in Poland. Core stack: C#, ASP.NET Core, and REST APIs, working with Visual Studio, Git, and Azure DevOps on a B2B contract with benefits.
Senior Backend Developer
MAJORITY is a groundbreaking all-in-one digital financial service app that includes an FDIC-insured account, Visa® Prepaid card, money remittance, and international calling. We are built for migrants, by migrants.…
Senior Backend Developer (Python)
Senior backend developer building and scaling high-traffic Python web platforms and REST APIs using Django/Flask/FastAPI, deployed on Linux with Nginx, Docker, AWS/Alibaba Cloud, CDN and caching, and MySQL/PostgreSQL/Redis. Also supports video streaming / media-related platform infrastructure and troubleshoots production issues.
(Senior) QA Engineer - Backend (x/f/m)
Senior QA Engineer at DKB (a German bank, hired via its tech sister Code Factory) in Berlin, designing and maintaining automated backend tests for APIs and microservices, integrating them into CI/CD pipelines, and shaping test strategy. Core stack: Java, Serenity BDD, Apache Kafka, CI/CD.
Senior Software Engineer (Backend), Co-Experience
Senior backend engineer on Roblox's Co-Experience team, owning and scaling the platform-level Party System (groups, chat, private gameplay, creator APIs) that keeps social interactions safe and civil for millions of concurrent users. Core tech: microservices in a compiled language (C#, C++, Java, or Go) and consumer-facing APIs, with heavy use of AI-assisted development.
Senior Backend Developer, AI Systems
Senior backend developer who leads the evolution of a large-scale AI-powered recommendation engine into a modern distributed architecture, powering billions of real-time marketing decisions. Day to day: designing and operating fault-tolerant Python services, tuning performance, and owning deployment and monitoring with Spark, Kubernetes, Kafka, gRPC, and cloud platforms.
Senior Backend Software Engineer, Node.js / TypeScript / Rust (Remote US, Full-time) — Mercor via AI Gig Scout
Mercor is placing a senior backend engineer on a high-scale consumer platform team at a large US enterprise, building services behind web and mobile apps used by millions. Daily work spans Node.js, TypeScript, and Rust, REST/GraphQL APIs, CI/CD, performance monitoring, and AI/ML integrations; fully remote US, $50–80/hr W-2.
Senior Backend Engineer
Senior Backend Engineer at Fullpath developing AI-driven products in the automotive space. Responsibilities include writing high-quality code, optimizing application performance, and collaborating with cross-functional teams using technologies like AI, SQL databases, AWS, and microservices.
Sr. Director, Back-End Engineering
The Sr. Director of TestOps will lead the strategy and development of a company-wide, automated testing platform to improve continuous delivery and release quality. This role involves managing engineering teams to build scalable test infrastructure, AI-assisted testing tools, and resilience validation systems for a large-scale distributed ecosystem.
Sr. Director, Back-End Engineering
The Sr. Director of TestOps will lead the strategy and development of a company-wide, automated testing platform to improve continuous delivery and release quality. This role involves managing engineering teams to build scalable test infrastructure, AI-assisted testing tools, and resilience validation systems for a large-scale distributed ecosystem.
Senior Software Engineer (Backend) (Remote)
Build scalable backend microservices and APIs for a construction commerce FinTech platform using Go/Java/Scala on AWS, with experience in distributed systems, Kafka/Kinesis, and SQL databases.
Senior Backend Engineer - Introducer Tech
Senior Backend Engineer - Introducer Tech - DE Hybrid in London / Remote within the UK We’re looking for a Senior Backend Engineer You'll own the Lending API in Germany, which banks, fintechs, brokers, and comparison…
Senior .NET Backend Engineer for Scalable APIs
Senior .NET backend developer in Kuala Lumpur who designs, builds, and maintains scalable APIs and services using C#, ASP.NET Core, and SQL Server, collaborating with frontend teams and stakeholders with a focus on code quality, security, and testing.
Senior Backend Developer
On-site senior backend role in Kuala Lumpur: design, develop, and maintain .NET back-end services and APIs (C#, ASP.NET/ASP.NET Core, Microsoft SQL Server), including code reviews, testing, debugging, and secure coding. Redis and front-end framework familiarity (Angular/React/Vue) are pluses. Posted via a recruitment consultancy.
Senior Backend Engineer - Engine
Build and scale the backend platform for a high-growth online casino gaming server using Go and Rust, with Kubernetes, Terraform, and ClickHouse.
シニアバックエンドエンジニア/Senior Software Engineer, Backend
事業内容 当社は「『はたらく』を通じて人生の可能性を広げるインフラをつくる」をミッションに掲げ、深刻化する人手不足という経営課題を解決しながら、一人ひとりが好きな時に働き、人生の可能性を広げられる世界を目指し、スキマバイトアプリ「タイミー」を中心に事業を展開してきました。そして2018年のサービス開始から、タイミーは以下の規模まで成長しました。 ・ワーカー数：1,470万人 ・事業者数：250,000社…
シニアWebアプリケーションエンジニア / Senior Web Application Engineer
事業内容 当社は「『はたらく』を通じて人生の可能性を広げるインフラをつくる」をミッションに掲げ、深刻化する人手不足という経営課題を解決しながら、一人ひとりが好きな時に働き、人生の可能性を広げられる世界を目指し、スキマバイトアプリ「タイミー」を中心に事業を展開してきました。そして2018年のサービス開始から、タイミーは以下の規模まで成長しました。 ・ワーカー数：1,470万人 ・事業者数：250,000社…