Top Backend Developer Jobs

As a Senior Software Engineer, you will architect and maintain scalable backend services, drive technical excellence, and collaborate across teams to enhance AI-driven systems.

As a Senior Software Engineer, you'll develop scalable backend services, own critical system components, optimize data pipelines, and troubleshoot infrastructure issues.

Design, implement, and own backend features from inception to production. Collaborate with product, marketing, and front-end teams to iterate quickly. Write clean, testable server-side code (Kotlin/Java or similar), work with relational databases and SQL, and operate in cloud-based environments with CI/CD deployment.

The Senior Staff Backend Engineer will enhance cloud infrastructure reliability and efficiency, design scalable solutions, and oversee the deployment of cloud services, analyzing business problems to optimize performance and availability.

The Senior Staff Backend Engineer will enhance cloud infrastructure's reliability and efficiency, design scalable systems, and collaborate across teams to improve architecture and deployment automation.

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 build applications and infrastructure focused on health care, collaborating with teams to improve technology and implement technical migrations.

Develop backend services for AI applications, focusing on software design, documentation, and code reviews. Requires proficiency in Scala and cloud environments.

Design, build, and maintain Java backend services for order lifecycle, payments, device sync, and restaurant workflows. Improve APIs and event-driven systems for low-latency multi-device coordination and offline-first syncing. Collaborate with Android engineers, product, and cross-functional teams, ensure code quality through testing and observability, and own production services used in live restaurants.

On-site Mid/Senior backend developer to manage CI/CD/Kubernetes, develop CCDI backend services, handle database integration/migration (PG, Oracle, MongoDB, Redis), implement Kafka event streaming, support Informatica/EAI migrations, provide production on-call support, perform system monitoring, incident response, and code review. Bilingual Korean/English required.

Build and own scalable, reliable backend services and platform architecture. Work across analytics, data, search, infrastructure, monitoring, cost management, security, and scaling. Ship production code, design systems with high code quality, and collaborate cross-functionally to deliver user-focused solutions.

Own design, build, operate, and monitor Ventura OS cloud infrastructure: compute, Kubernetes, storage, databases, identity, CI/CD, telemetry, GPU/ML serving, and build/release systems. Drive migrations, set platform standards, ensure reliability, observability, security, and cost efficiency while partnering with application teams and mentoring engineers.

Build and maintain backend systems in TypeScript, improve observability and metrics, automate deployments and Slack reporting, test and troubleshoot production systems, and clean up the existing codebase.

Design, build, and optimize high-throughput, highly available backend services in Golang for 24/7 sports and prediction-market applications. Lead architecture decisions, implement features, diagnose and resolve high-concurrency bottlenecks, and provide high-tier operational support for real-time transactional systems.

Build and maintain a backend-first fullstack platform for governed AI workflows: design Python/Django services, APIs, Kubernetes-backed execution, agent orchestration, permission-aware data access, observability, frontend surfaces in TypeScript/React, and platform abstractions to make distributed AI workflows reliable, auditable, and usable by regulated customers.

Lead architecture and backend engineering for a startup ML product. Design and build data integration systems, cloud-native infrastructure, CI/CD and MLOps pipelines, enterprise security and networking, and event-driven systems (e.g., Kafka). Report to the CTO as the first non-founder engineering hire and make core product and architectural decisions.

Seeking a Senior Backend Engineer to build and maintain systems for a content marketing platform, focusing on performance, scalability, and innovation in a collaborative environment.

Build and operate core backend APIs, integrations, and runtime infrastructure powering data, identity resolution, permissions, and workflow execution. Ensure reliability via observability, monitoring, failure handling, performance tuning, and operational tooling. Enable safe product and agent development and turn production feedback into platform improvements.

Build and scale backend services for a real-time observability platform. Work on high-throughput data ingestion, streaming systems, pub/sub and async task pipelines, ensuring throughput, reliability, fault tolerance, testability, and production readiness under load.

Own design and evolution of supplier/item/price/document schemas, plan and run migrations/backfills on live customer data, build scalable queues and background jobs, set API and data patterns, implement customer-facing product features, and mentor other engineers. Work closely with customers and leadership and use AI tools in shipping model-driven features.

Develop scalable REST API microservices in ASP.NET Core (C#); model relational/NoSQL schemas; build high-throughput file-processing workers; design AWS infrastructure with IaC; participate in architecture and system design decisions.

Design and maintain scalable backend data systems, schemas, migrations, and high-throughput job pipelines. Build customer-facing product features, guide other engineers on data and API patterns, plan migrations/backfills, and ensure reliability and performance as usage grows.

Design and build the management layer for a distributed embedded system: policy structures, configuration storage and reliability, secret management, and engines. Architect and secure REST/gRPC APIs, optimize database performance, and collaborate on a high-availability cybersecurity product.

Design, build, and maintain scalable backend services and APIs; implement authentication and secure session flows; develop real-time data pipelines and media handling; architect and migrate database schemas (Postgres to DynamoDB); collaborate with mobile/frontend teams to deliver low-latency consumer experiences; participate in full SDLC in a fast-moving startup environment.

Design, develop, and maintain scalable Java/Spring Boot backend services, build RESTful APIs, optimize relational databases (Postgres), implement business logic and third-party integrations, containerize and deploy with Docker and Kubernetes, and ensure code quality through testing and reviews.