Top Backend Developer Jobs

Develop and maintain scalable Java backend applications, REST APIs, and microservices. Integrate backend services with frontend systems and third-party platforms, write efficient code, conduct reviews, troubleshoot issues, optimize performance, and implement security measures. Collaborate with QA, product, and frontend teams while participating in Agile ceremonies, testing, documentation, and service improvements.

Build and maintain an AI-powered insurance brokerage product across the full backend stack. Responsibilities include designing AI-driven applications, researching and applying AI tools, debugging production issues, collaborating with founders and product leaders, shaping technical vision, and helping establish engineering culture and practices as the company grows.

Lead backend engineering for a mobile-first, backend-driven consumer app. Design, build, and own Rust-based microservices, APIs, feature-flagging, and UX configuration; partner with iOS/Android teams, provide architecture guidance, and drive delivery from design through production.

Lead and set technical strategy for the Order Platform powering post-checkout flows (orders, captures, refunds, settlement). Design and ship highly available backend systems, own reliability/operational practices, mentor engineers, collaborate cross-functionally, and drive long-term technical decisions and execution plans.

Design and build scalable backend systems, data pipelines, and cloud infrastructure. Own CI/CD, containerization, databases, and reliability; collaborate with tech leads to deliver secure, production-grade solutions for startups in a fully remote environment.

As a Sr. Software Engineer, Backend, you will develop AI-powered solutions for clinical documentation and medical coding, collaborating with cross-functional teams to enhance SaaS products and deliver actionable insights for healthcare organizations.

As a Backend Engineer, you'll contribute to product roadmaps, scale infrastructure, integrate services, and drive architectural decisions while interacting with smart contracts.

Design, build, and scale distributed backend services and shared platform infrastructure using Java, Spring Boot, Postgres, AWS, and Kubernetes. Develop resilient microservices, implement secure coding practices, improve system performance and reliability, and maintain automated testing. Collaborate with engineering leadership, product managers, and cross-functional teams while mentoring engineers and contributing to platform tooling and architecture.

Design, build, and scale resilient RESTful backend services and shared platform tooling using Java, Spring Boot, Postgres, AWS, and Kubernetes. Develop distributed microservice architectures, implement automated testing, promote secure coding practices, and mentor engineering teams. Collaborate with engineering leadership, product managers, and cross-functional partners while independently delivering high-impact platform solutions.

Design and operate backend systems for high-volume, multi-stage data pipelines that de-identify sensitive enterprise data. Own versioned contracts, lineage, state transitions, retries, replay, reconciliation, verification, migrations, and safe recovery. Diagnose production behavior across services and storage, improve correctness and throughput, and build auditable release controls. Collaborate with ML, data, platform, security, product, and customer-facing teams while using AI tools with deterministic safeguards and human review.

Senior backend (Python) engineer responsible for designing, building and maintaining RESTful backend services and APIs, integrating data science outputs, optimizing performance and multithreading, troubleshooting UAT/integration issues, leading teams, and documenting solutions for enterprise Data-to-Decision systems.

Lead technical direction for a greenfield team building agentic/LLM-backed systems to reduce SDLC friction. Drive discovery through shipping, apply distributed-systems judgment at scale, mentor engineers, own technical hiring and cross-team alignment, and evaluate correctness and safety of agentic workflows.

Build and scale customer-facing full-stack platforms using React, TypeScript, Go, Java, Python, Node.js, and AWS. Develop APIs, microservices, distributed systems, databases, cloud infrastructure, and automated deployments. Participate in architecture and code reviews, testing, security, observability, CI/CD, and production troubleshooting. Collaborate with product and design teams, communicate technical decisions, mentor engineers, and independently deliver complex initiatives across distributed Agile teams.

Design, build, and operate backend services and infrastructure powering large-scale simulation and inference. Own Terraform-based IaC, CI/CD pipelines (Jenkins), build systems (CMake, Python packaging), and harden prototypes into production-ready systems while partnering with researchers and engineers.

Build core multimodal backend systems for robotics and Physical AI, including real-time WebRTC video pipelines, hardware-accelerated codecs, petabyte-scale ingestion and storage, LiDAR and telemetry processing, sensor synchronization, and high-performance React and TypeScript interfaces. Engineers may work across infrastructure, spatial data, video, frontend, and AI-native product workflows while independently solving complex technical challenges.

Designs, develops, and maintains backend services and data pipelines for a scalable data platform. Writes production Python and SQL, architects storage and processing solutions, leads technical decisions and cross-functional initiatives, troubleshoots production issues, reviews code, mentors engineers, and collaborates with data science, product, and engineering stakeholders.

Build backend services, APIs, BFFs, orchestration layers, and reusable business services for a Sales Command Center. Integrate Microsoft Dynamics 365 and Dataverse with enterprise systems using secure REST, asynchronous, and event-driven patterns. Implement authentication, resilience, caching, read models, observability, testing, and CI/CD. Troubleshoot production integrations across user interfaces, backend services, APIs, and CRM systems.

Design and develop backend distributed systems for 5G non-terrestrial networks, Direct-to-Cell services, satellite orchestration, and terrestrial network coordination. Build scalable cloud-native software using C++, Golang, Java, gRPC, Protocol Buffers, and Kubernetes. Translate 3GPP and O-RAN specifications into reliable software, integrate platform components, document implementations, troubleshoot issues, and collaborate with telecom solution architects.

Lead delivery for the Batch Infrastructure team: design, build, and operate reliable, scalable compute platforms for scheduled and on-demand batch workloads. Collaborate with product/design/analytics, define technical plans, ensure availability (monitoring/on-call), set code and design standards, and mentor engineers to improve delivery and quality.

Lead backend engineering for cloud-native, event-driven data pipelines and customer integrations (especially EHRs). Evolve core data models and APIs, improve scalability and reliability, mentor engineers, define best practices, and drive end-to-end testing and AWS-based solutions.

Leads backend software projects and coordinates engineering work across the SDLC. Designs, develops, reviews, and operates scalable, fault-tolerant distributed services for Venmo’s payments platform. Collaborates with product managers and management, resolves technical issues, improves engineering processes, mentors junior engineers, and makes architectural decisions. Owns service performance and availability, participates in on-call rotations, supports incidents, and contributes to reliable cloud infrastructure using Python, databases, messaging systems, caching, and Terraform.

Build customer-facing backend features using Django, optimize application performance, reduce technical debt, and collaborate closely with teammates. The role requires Python web development, computer science and algorithm fundamentals, strong research and debugging abilities, sound technical judgment, and ownership of work from development through delivery. This is an in-person position in Kitchener-Waterloo, New York, or San Francisco, with authorization to work in the US or Canada and ability to travel between both countries.

Develop, test, and maintain backend services using Java and AI coding agents. Implement features from design through deployment, prototype product ideas, integrate third-party APIs, collaborate across teams, and support documentation, training, and system maintenance. The internship includes mentorship, peer reviews, and use of advanced AI development tooling.

Build and own Crucible’s backend for production planning and execution across cloud, factory, and disconnected classified environments. Design services, APIs, data models, workflows, integrations, synchronization, reconciliation, and failure recovery. Improve reliability, performance, observability, and testing while partnering on architecture and mentoring engineers. The role requires solving complex distributed-state and consistency problems for manufacturing systems.

The Senior Software Engineer will design, build, and maintain distributed backend services to enhance patient care workflows at Ro. Responsibilities include improving system performance and collaboration across various teams to ensure quality and compliance.