Top Backend Developer Jobs

Lead a team of developers in building cloud-based solutions, focusing on back end software engineering with AWS and programming languages like Java, Go, and Python. Collaborate on diverse projects to meet business and regulatory needs.

As a Backend Engineer, you will develop core components for an AI product, ensuring reliability, scalability, and performance while mentoring the engineering team.

As a Staff Backend Engineer, you'll manage systems and APIs, optimize truck routing and payment processing, and integrate with telematics providers while utilizing AI coding tools.

The Backend Engineer will architect and scale real-time food ordering systems, write high-quality code, mentor engineers, and ensure system reliability and scalability.

As a Staff Backend Engineer, you'll design scalable solutions, lead technical architecture, contribute to products, and work in a dynamic environment with a focus on high-quality code.

Build and scale backend systems for the Lapel platform, design APIs, manage database schemas, and optimize performance. Collaborate with product teams to implement reliable backend solutions.

Lead the design of a distributed backend streaming engine with a focus on high availability and AI integration, ensuring low latency and high throughput.

Seeking backend engineers to build and maintain APIs for payment processing, collaborating with cross-functional teams and mentoring peers.

As a Senior MTS Backend Engineer at eBay, you will develop services for eBay Live, mentor junior engineers, and collaborate across teams to build scalable backend systems.

Design, build, and maintain backend services and APIs using Ruby on Rails. Improve performance, scalability, reliability, and write well-tested production code. Collaborate with Product, Frontend, Data Engineering, and QA teams.

Design, develop, and maintain backend services and integrations using C#/.NET and ASP.NET Core. Build RESTful APIs, support Dynamics 365 and web platform integrations, implement data processing and background jobs (e.g., Azure Functions patterns), participate in CI/CD and DevOps, write tests, troubleshoot production issues, and collaborate with analysts and stakeholders to deliver scalable, secure solutions.

Design, implement, and maintain platform-independent device communication middleware and related applications. Build high-performance Node.js/TypeScript services, expose functionality via GraphQL/REST, standardize device interactions, collaborate with cross-functional teams, and follow CI/testing best practices to ensure reliable, maintainable cross-platform and embedded solutions.

Design and build highly scalable, low-latency backend systems and APIs powering real-time features and media storage. Collaborate with product, infra, and data teams, mentor engineers, drive architecture and technical decisions, and ensure reliability, performance, and security at large scale.

Senior Java backend engineer responsible for designing, developing, deploying and supporting backend APIs and services for enterprise digital, dealer, and customer applications. Work is ~70% new development, ~30% maintenance, using AWS/cloud infrastructure, CI/CD, automated tests, and Scrum; includes database changes, security, troubleshooting, and occasional high-level design and cross-team collaboration.

Design, build, and maintain backend services and RESTful APIs for the Blueflame AI platform using Python. Optimize databases (MongoDB, Redis), ensure security, contribute to system design and architecture, review code, and collaborate with Product and Client Success to deliver features and fixes.

Design, develop, and optimize high-performance Java backend systems. Contribute to architecture, implement core modules, troubleshoot production issues, perform code reviews, and improve scalability, availability, and reliability of distributed financial or blockchain systems.

Design, build, and improve DApps and smart contracts; optimize backend services for multi-chain scalability and reliability; perform code reviews and testing; enforce blockchain security best practices; collaborate with frontend, product, and stakeholders; stay current with blockchain technologies and platform improvements.

Design and implement scalable backend infrastructure for an AI-native security platform. Build and operate code-execution pipelines, agent orchestration, evaluation and training pipelines, and mentor engineers to ensure performance, reliability, and secure architecture at enterprise scale.

Design and build core backend modules for a high-volume P2P marketplace, including order matching, escrow, dispute resolution, and merchant management. Develop high-concurrency transaction processing, seller/buyer workflows, payment integrations, and ensure reliability, idempotency, and consistency across transactions. Participate in architecture design, code reviews, and cross-team collaboration.

Design, build, and maintain backend payment systems (wallets, gateways, merchant management). Implement open APIs, tune performance, troubleshoot incidents, and collaborate with product and cross‑team stakeholders.

Design, build, and maintain bank and card payment integrations and high-availability, high-concurrency payment processing modules (routing, clearing, reconciliation, settlement). Collaborate with product, risk, and compliance, participate in code reviews and system design, and optimize system performance and scalability.

Early-career backend engineer in the KYC Technology Team building and improving Binance's global KYC platform: define APIs, troubleshoot QA issues, assist customer support, integrate compliance vendors, and apply scalable microservice solutions.

Design and implement high-throughput distributed services for KYC onboarding. Convert business requirements into services, tune performance, troubleshoot incidents, write tests and technical documentation, collaborate cross-team, and mentor junior engineers.

Design, build, and maintain high-performance backend services and APIs using Java/Spring Boot. Develop and productionize recommendation algorithms and LLM systems, optimize LLM workloads (including on-prem), ensure scalability, reliability, and security, and collaborate across time zones with product and project teams to own end-to-end architecture.

Contribute to development and maintenance of core backend infrastructure, compile and implement interface documentation, troubleshoot and resolve QA-reported issues, and assist Customer Success in solving and classifying customer problems to drive system improvements.