Top Backend Developer Jobs

Develop and maintain full‑stack applications with emphasis on back-end and scalable data engineering. Build and optimize data pipelines and datasets, work with Databricks/Delta Lake and Spark, collaborate across product and engineering teams, apply SDLC best practices, participate in architecture and design, and prototype agentic AI features while using CI/CD and cloud (AWS) technologies.

Take end-to-end ownership of backend features and SaaS services in a microservices architecture. Design, implement, deploy, and operate scalable, reliable Node.js services. Work with Redis Streams, MongoDB, Kubernetes, and ensure test coverage, performance tuning, and collaboration with cross-functional teams.

Design, build, and maintain scalable TypeScript/NestJS backend services and APIs. Implement event-driven, asynchronous processing with queues/workers, ensure observability, performance, and reliability, and collaborate across product and operations to deliver high-throughput, integration-heavy systems.

The Software Engineer - Backend will design and build core systems for fantasy sports games, optimizing performance and collaborating cross-functionally to enhance user experience.

The Staff Software Engineer - Backend will design and build core backend systems, optimize performance, lead initiatives, and mentor team members in a remote-friendly role.

The Senior Software Engineer - Backend will design and build scalable backend systems for fantasy sports, enhance performance, and collaborate with cross-functional teams to optimize solutions for millions of users.

Owner of backend and data systems for underwriting and risk: translate models and policies into reliable production services, build decisioning and review workflows, partner with Risk and Data Science, and improve reliability, latency, and correctness for credit decisions.

Design and own developer- and agent-facing APIs and integration surfaces; build authentication/authorization and multi-tenant enterprise features; implement usage metering, rate limiting, and SLO-driven reliability; harden platform for production agentic AI; collaborate with engineering and research to ship secure, scalable developer experiences.

Build and ship production AI features (LLM agents, tool/function calling, RAG pipelines) and reliable backend services. Implement observability, tests, rollback/fallbacks, and evaluation to keep models grounded, safe, and cost-effective. Collaborate with product, design, and GTM; run experiments and raise engineering standards.

Senior backend developer responsible for designing, maintaining and enhancing Java/Spring automation testing frameworks, ensuring SDLC and quality standards, performing root cause analysis, mentoring junior staff, and driving CI/CD/DevOps and Oracle/SQL based development and testing practices.

Lead technical design and architecture for serverless personalization backend services. Build cloud-native APIs with TypeScript/Node.js on AWS Lambda/API Gateway, design Step Functions workflows, work with NoSQL and search systems, define backend standards, improve observability and reliability, mentor engineers, and drive migrations and modernization.

Design, build, and maintain high-availability, scalable backend systems for large-scale, real-time data processing. Work with streaming platforms, data infrastructure, and AWS services; own system components and influence product design.

Design and develop scalable backend systems for SaaS applications, mentor engineers, and lead projects while collaborating with cross-functional teams.

The Senior Back-End Software Engineer designs, develops, and maintains scalable backend systems while taking ownership of the software development lifecycle.

The role involves building and scaling backend services, designing APIs, optimizing database performance, and communicating with customers to improve product quality.

Lead the technical direction for the engineering team, architect systems, design APIs, and mentor engineers while improving backend infrastructure.

As a Senior Software Engineer at Flex, you'll design and maintain financial services architecture, mentor junior engineers, and ensure scalability and security for innovative financial products.

The Senior Software Engineer will design and develop backend systems using Go and PostgreSQL, focusing on performance, architecture, and backend microservices for the Flock Safety platform.

The Senior Backend Engineer will develop an AI agent platform, focusing on scalable architectures, integrating AI frameworks, and working on high-impact projects in a remote environment.

As a Backend Software Engineer, you'll design and implement AI systems, collaborating with engineers and stakeholders to meet military logistics needs.

As a Backend Software Engineer, you will build forecasting software for military logistics, utilizing mathematical models and collaborating with teams to enhance operational capabilities.

As a Backend Software Engineer, you'll design, build, and deploy software solutions for military logistics, collaborate with teams, and ensure operational needs are met.

The Senior Software Engineer will architect and develop scalable cloud-native backend services, manage the software lifecycle, and ensure high availability of the SaaS infrastructure, while also contributing to front-end development as needed.

Founding Backend/Infra Engineer responsible for building a scalable job search engine, including web crawlers and recommender systems. Requires strong programming skills, particularly in Node.js and Python, and attention to detail.

As a Senior Software Engineer at Sidecar Health, you will design and build scalable backend services, APIs, and manage complex healthcare data and workflows while collaborating with product and cross-functional teams.