Top Backend Developer Jobs

Build and maintain low-latency, reliable backend APIs and data systems for Arena's evaluation products. Design schemas, scoring pipelines, usage metering, billing, auth/RBAC, multi-tenancy, and integrate research evals into durable, scalable product surfaces. Collaborate with infra, research, and product teams to ship enterprise-grade services and scale data pipelines.

The Staff Backend Engineer will design and scale core systems for a B2B SaaS platform, focusing on backend architecture, reliability, and AI-assisted engineering workflows.

Lead a team of engineers to design APIs and systems for AI agents, manage infrastructure, and handle production software quality.

Own and scale the product/backend powering the Dashboard and SDK: build Go services, design APIs, auth, billing, and usage metering, implement real-time backends (WebSockets/SSE), optimize data access and performance, and partner with frontend and platform teams to ship features end-to-end.

As a Staff Backend Engineer, you'll develop scalable data systems for financial datasets, integrating diverse sources while ensuring data integrity and performance, collaborating with AI teams, and leading by example in a fast-paced startup environment.

As a Staff Backend & Platform Engineer, you'll design and operate identity management, financial operations systems, and blockchain infrastructure, ensuring high reliability and security.

You will design and implement scalable backend systems integrating August infrastructure with third-party DeFi protocols while collaborating with engineering teams.

As a Senior Backend & Platform Engineer, you'll design and operate critical systems in identity management, financial operations, and blockchain infrastructure while leading projects and mentoring engineers.

The role involves designing scalable infrastructure, leading technical initiatives, collaborating with research, and enhancing AI reliability tools. A focus on backend systems and modern cloud technology is essential.

Looking for a Senior/Staff Engineer to own and grow business lines, focusing on scaling and solving complex problems in a team-oriented environment.

The Senior Backend Engineer will design, build, and scale backend services, architect data processing pipelines, and mentor engineers in a rapidly growing AI firm.

Design and architect Java/Kotlin microservices for a multi-tenant SaaS platform. Collaborate on product development and establish deployment pipelines.

Seeking a Senior Software Engineer to design and build a microservices-based SaaS platform, focusing on Java and AWS technologies while ensuring robust deployment and customer satisfaction.

The Senior Software Engineer will build and maintain high-performance backend services and APIs for an AI healthcare platform, focusing on concurrency and reliability while ensuring secure data handling and system scalability.

As a backend software engineer, you'll build and maintain a high-performance server application for a radiology platform, improve application quality, and collaborate with various teams.

Build and operate backend services for a fintech platform: design fault-tolerant APIs, ensure data consistency and transactional integrity, develop distributed data processing and worker systems, improve deployment/monitoring, and collaborate with product, design, and operations to deliver scalable, secure financial services.

Design, test, and build backend software to deliver geospatial insights. Integrate and optimize data scientists' code for production, collaborate cross-functionally, and support deployment of climate-tech geospatial solutions.

As a Backend Engineer at Lapel, you'll design and build systems for AI agents, ensuring reliable interactions and context retrieval across customer experiences.

As a Backend Engineer at Lapel, you'll design and build user-friendly data models, event models, and permission systems, ensuring the foundation is reliable and extensible for all customers.

As a Backend Engineer, you'll develop and manage data and workflow systems, ensure secure data handling, design APIs, and support integration frameworks for external systems.

Build, ship, and operate backend systems and data infrastructure; develop robust business logic for health data; prototype and productionize experiments to improve AI/ML models; establish scalability, security, testing, and MLOps best practices; and iterate on engineering process and culture.

You will design, build, and maintain backend systems, optimize APIs, manage databases, and lead feature development in a scalable environment.

Seeking experienced Senior Backend Engineers to join a collaborative team, focusing on backend systems, shared services, and product features aimed at improving user experiences and monetization.

The Backend Software Engineer will design and build infrastructure for evaluating and enhancing OpenAI's support automation, collaborating with teams to develop pipelines and APIs.

This role involves designing and building high-performance backend systems and APIs while collaborating with cross-functional teams to meet evolving product needs.