Top Backend Developer Jobs

Own and extend an Elixir and Phoenix backend powering a building configurator, pricing engine, structural calculations, and internal tools. Implement numerically complex business logic, background processing, database functionality, third-party integrations, authentication, testing, CI/CD, code reviews, and releases. Work independently while communicating decisions and progress clearly with the backend lead and front-end developer.

Designs, develops, and maintains backend services, APIs, data structures, and architecture for conversational AI and automation applications. Integrates systems such as scheduling platforms and EHRs, implements authentication and HIPAA-appropriate security controls, and protects PHI and PII. Optimizes performance, scalability, reliability, and stability while troubleshooting defects. Collaborates with product, QA, integration, frontend, and design teams to deliver secure, reusable, well-tested solutions.

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.

Audit backend services, APIs, databases, queues, and data flows for scalability and reliability issues. Identify bottlenecks, document findings, and implement production fixes including code refactoring, schema redesign, caching, indexing, query optimization, and service restructuring. Partner with engineers through pairing, reviews, and handoffs. Conduct performance and load testing while improving system latency, resilience, and infrastructure efficiency.

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.

Build and maintain backend services, APIs, and document-processing pipelines for PDFs, Office files, email containers, and OCR workflows. Improve database and background-task performance, reliability, testing, observability, authentication, authorization, and secure system design. Collaborate with search and AI engineers on large-scale indexing and retrieval using Python, Flask, PostgreSQL, Redis, Elasticsearch, Docker, and related technologies.

Develop scalable backend applications and robust APIs for Salesforce’s multi-tenant cloud platform. Responsibilities include architecture, implementation, testing, system integrations, large-scale cloud data processing, CI/CD, on-call support, and evaluating human- or AI-generated code. The role emphasizes AI-first engineering, advanced prompt engineering, secure AI agent integration, and maintaining reliable system context and engineering standards.

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 and scale backend services powering an AI scheduling assistant: orchestrate scheduling, email, API and LLM integrations; develop trainer and operations tooling; contribute to architecture and technical direction.

Design, develop, and maintain Java backend services across modern microservices and legacy enterprise platforms. Build REST and SOAP integrations, optimize Oracle database access, troubleshoot production issues, contribute to testing and CI/CD, and support application modernization. The role includes technical planning, architecture collaboration, code reviews, mentoring, documentation, stakeholder communication, roadmap execution, candidate interviews, and occasional client travel.

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.

Develop and maintain backend services and RESTful APIs using C# and .NET. Design and optimize MySQL schemas and queries, troubleshoot production and staging issues, improve performance and scalability, document architecture, and uphold code quality and security. Collaborate with cross-functional teams in a fully remote environment while contributing to development best practices and continuous improvement.

Design, build, and scale low-latency backend services for Polymarket’s real-time exchange. Develop event-driven pipelines and APIs, optimize latency and throughput, maintain production reliability, diagnose incidents, and contribute to distributed-systems architecture focused on correctness, graceful degradation, and recovery. Collaborate across product, infrastructure, and data teams in a highly autonomous environment.

Design, build, test, and support EPIC integration solutions across the full interface lifecycle. Gather requirements, resolve integration issues, develop standards and documentation, and provide production support within a remote, volunteer, part-time setup.

Lead backend development to scale and harden API infrastructures, implement unit testing playbooks, optimize core algorithms, support migration from Supabase to a robust cloud provider, ensure system reliability and scalability, collaborate with frontend and DevOps, and integrate AI workflows and RPA where applicable.

Build and maintain backend services and APIs, write unit tests, debug and optimize systems, support migration from Supabase to cloud, improve reliability, and integrate AI/RPA workflows while learning under senior mentorship.

Lead backend development for Dragos' OT security platform: design and implement high-performance systems in Rust, optimize architectures, participate across the development lifecycle, integrate databases and third-party data providers, incorporate AI tools, mentor senior engineers, and drive cross-team architectural decisions.

As a Backend Software Engineer, you will design and implement scalable services, focusing on API design and system architecture while mentoring team members.

Design, build, and deploy backend services for creative tools. Integrate with AWS, ensuring scalable and secure Python code for event processing and APIs.

Design, develop, and maintain scalable, high-performance backend and middleware services on the JVM using Java and Spring/Spring Cloud. Build and enhance microservices, work with AWS and Docker, implement SQL/noSQL solutions (MySQL, Elasticsearch), use Git-based source control and JIRA, collaborate across engineering, design, and QA, and mentor teammates while following best practices and Agile methodologies.

Design, build, and scale backend systems and microservices for automated chargeback and dispute workflows. Integrate with card networks, banks, and merchants, improve CI/CD, upgrade platform architecture, and own feature delivery and system optimizations.

Lead a portfolio and team building distributed microservices and cloud-based backend systems to meet regulatory needs. Mentor engineers, collaborate with product managers, and occasionally code and evaluate solutions using Java/Scala/AWS and related cloud, database, and container technologies.

Lead a portfolio of backend technology projects and an engineering team to build distributed microservices and cloud-based solutions. Collaborate with product managers, mentor engineers, experiment with emerging tech, and occasionally write or review code using Java, Python, Node.js, Go, or Scala, containers, orchestration, and AWS/GCP/Azure services to meet regulatory and customer needs.

Lead a portfolio of backend engineering projects and a development team to design, build, and operate distributed microservices and cloud-native solutions (Java, Go, Python). Mentor engineers, collaborate with product managers, ensure regulatory-compliant systems, and occasionally code or evaluate implementations.

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.