Top Backend Developer Jobs

Design, build, and improve scalable backend systems, REST APIs, microservices, data-processing systems, and distributed job platforms. Write secure, maintainable, high-performance code; practice test-driven development; debug production issues; improve engineering standards and tooling; and participate in on-call rotations. The role requires designing highly available systems, building backend APIs, working with relational databases, and applying security best practices.

Build and improve scalable backend systems, including REST APIs, microservices, data processing, and distributed task systems. Develop secure, maintainable code; contribute to product and engineering improvements; practice test-driven development; debug production issues; participate in on-call rotations; and apply security and data-protection best practices.

Design, build, and improve scalable backend systems, REST APIs, microservices, data-processing systems, and distributed job-processing platforms. Write secure, maintainable, high-performance code; improve engineering practices and tooling; apply test-driven development; debug production issues; and participate in on-call support. The role requires expertise in distributed systems, backend APIs, relational databases, and Node.js, along with strong communication and problem-solving skills.

Design, build, and improve scalable backend systems, including REST APIs, microservices, data-processing pipelines, and distributed job systems. Write secure, maintainable, high-performance code; contribute to engineering standards and tooling; practice test-driven development; debug production issues; and participate in on-call rotations. The role requires experience with highly available distributed systems, scalable backend APIs, technical leadership, and solving ambiguous, high-impact problems.

Design, build, and improve scalable backend systems, including REST APIs, microservices, data processing pipelines, and distributed job systems. Write secure, maintainable, and tested code; troubleshoot production issues; improve engineering practices and tooling; and participate in on-call support. The role requires experience with web applications, Node.js, highly available distributed systems, scalable backend APIs, and relational databases, preferably PostgreSQL.

Design, build, and improve scalable backend systems, REST APIs, microservices, data processing pipelines, and distributed task systems. Write secure, maintainable code, contribute to product and engineering improvements, practice test-driven development, debug production issues, participate in on-call rotations, and apply security best practices including OWASP Top 10 techniques.

Architects and leads distributed backend systems for a multi-tenant lending platform. Responsibilities include designing microservices, APIs, event-driven workflows, integrations, authentication, authorization, data integrity, observability, reliability, and security. The role sets backend architecture and engineering standards, mentors engineers, drives cross-functional initiatives, translates lending and compliance requirements into software, and operates production systems. It also expects hands-on use and evaluation of AI coding assistants.

Develop and enhance backend systems, services, APIs, and core product features. Improve codebase maintainability, reliability, and scalability while operating mission-critical systems in production. Participate in on-call incident resolution, automated monitoring and instrumentation, recruiting, interviewing, and mentoring. The role emphasizes distributed systems, automated testing, continuous integration, and measurable business impact.

Design, develop, and maintain scalable .NET applications and microservices. Build REST APIs and event-driven solutions with RabbitMQ, manage message reliability, optimize SQL Server data access, implement security, troubleshoot distributed systems, and write automated tests. Collaborate across engineering and business teams, participate in code reviews, support CI/CD and cloud deployments, and improve application performance, scalability, and reliability.

Designs and delivers complex backend services and shared platform components for identity, authentication, and access control. Owns projects from design through production, breaks initiatives into milestones, resolves technical challenges, identifies risks, mentors engineers, documents technical decisions, and collaborates across teams to align engineering work with product priorities.

Build and maintain backend services powering Pump’s cloud cost optimization platform. Design and scope product features, improve internal tools and CI/CD workflows, participate in code reviews, and ensure reliability, performance, and maintainability. Collaborate with engineers, designers, founders, and other teams to solve customer problems. This is a fully in-office role requiring five days per week on site.

Build and operate a high-performance AI Gateway that securely routes, inspects, and governs enterprise traffic to LLM providers. Develop asynchronous Python and FastAPI services, streaming APIs, network protocols, cloud-native infrastructure, messaging systems, security integrations, observability, and CI/CD pipelines. The role involves Kubernetes deployments, scalable concurrent connections, identity and access management, AI/LLM workflows, cost optimization, and incident response. Korean-English bilingual ability is highly preferred.

Lead architecture, development, and operation of globally scaled payments and billing systems. Own subscription billing, payment providers, invoicing, reconciliation, security, compliance, reliability, and modernization. Use and advance AI-agent workflows for engineering, incident response, testing, and anomaly detection while enforcing strict human review and PCI safeguards. Mentor engineers, guide technical strategy, and collaborate with Product, Finance, Risk, Platform, and Analytics.

Design and scale production-grade asynchronous backend systems in Python, including REST/WebSocket APIs, multi-agent LLM workflows, provider-agnostic integrations, and RAG pipelines. Build schemas and migrations, optimize relational databases, instrument services, and own CI/CD from testing through deployment. Establish AI governance around code review, provenance, licensing, security, compliance, and customer data. Drive architecture and product ideas from conception through production.

Lead the architecture and development of scalable backend platforms for Cisco’s AI products. Design and deploy AI/ML infrastructure and AI-powered networking and security solutions, resolve complex technical challenges, and convert research strategies into production systems. Collaborate across product and research teams, influence senior stakeholders, mentor engineers, and drive high-impact platform initiatives for enterprise-scale applications.

Build and own backend infrastructure for an AI-native life sciences platform, including scalable APIs, data pipelines, background workers, orchestration, RAG workflows, and real-time inference systems. Improve reliability, observability, security, multi-tenant data isolation, explainability, latency, and cost efficiency while collaborating with product, AI, engineering, and customer-facing teams.

Build and operate the backend platform for autonomous cybersecurity agents, including durable workflow execution, tool and connector frameworks, safe-change pipelines, tenant isolation, ETL, GraphQL services, observability, audit trails, and distributed systems. Partner with AI researchers and security engineers to productionize agent capabilities across customer environments while enforcing authorization, rollback, quotas, and data protection.

Develops, tests, deploys, maintains, and supports production software for backend and distributed systems. Responsibilities include product configuration, security, resilience, performance tuning, monitoring, debugging, testing, and participation in Agile collaboration. The role works with event-driven architectures, cloud platforms, databases, CI/CD pipelines, observability tools, and microservices while continuously developing technical skills.

Leads modernization of mission-critical database and .NET systems. Responsibilities include refactoring stored procedures, optimizing SQL performance, evolving schemas safely, extracting business logic into maintainable services, and modernizing legacy .NET code. The role establishes testing, dependency injection, observability, deployment-safety, and incident-response practices while collaborating with SRE and DevOps teams. It requires deep SQL Server expertise and experience maintaining production stability during large-scale software modernization.

Re-architect and operate a globally distributed, multi-tenant Model-as-a-Service platform. Own Go backend services, API compatibility, inference routing, Kubernetes-based model serving, performance optimization, multi-region reliability, tenant isolation, observability, metering, and invoice-grade billing. Lead migrations, define SLOs, support on-call operations, mentor engineers, and ensure scalable, secure, reversible delivery for a revenue-bearing platform.

Build and operate Coupang's security infrastructure and IAM platforms. Design and implement backend APIs and scalable distributed systems, collaborate cross-team for platform adoption, ensure reliability and operational excellence, and mentor other engineers.

Lead backend engineering for AI platform components, designing scalable services for enterprise and on-premises deployments. Own systems from architecture through production release, guide and develop engineers, manage priorities, and support customer rollouts. The role requires Python and TypeScript expertise, container orchestration and packaging experience, end-to-end product delivery, people leadership, and a computer science or related STEM degree.

Design, build, and operate scalable backend services for payments, cards, spend management, and compliance. Develop production-quality services and APIs, optimize databases, integrate AI and third-party APIs, and implement secure event-driven architectures. Own features from design through deployment and monitoring, contribute to reliability and CI/CD improvements, participate in on-call rotations, and collaborate with globally distributed engineering, product, compliance, and data teams.

Design and develop scalable backend systems using Kotlin, Micronaut, and Spring. Build RESTful APIs, optimize PostgreSQL and Elasticsearch databases, implement RabbitMQ-based asynchronous processing, integrate AI tools, and create automated tests. Deploy and monitor services on GCP using Docker, Kubernetes, and Terraform. Collaborate cross-functionally, participate in code reviews, troubleshoot performance issues, and deliver reliable backend products.

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.