Top Software Engineer Jobs

Own and develop distributed database systems powering R2, Durable Objects, and Workers KV. Implement features, ensure correctness via review and testing, tune performance, optimize data placement and replication across edge topology, and build observability and tooling to operate storage globally across Cloudflare's network.

Develop, enhance, and maintain backend applications and services for risk analytics and data processing. Collaborate with product, quant, and engineering teams, participate in design, write tests, troubleshoot issues, support CI/CD and release activities, and document designs and APIs.

Build and improve Belfry’s React Native and Expo mobile application and React web platform for field officers and back-office teams. Establish UI best practices, observability, and design systems; contribute to APIs, backend services, integrations, and infrastructure as needed. Help adopt AI-powered coding tools, take ownership of product initiatives, communicate technical and product ideas, and mentor engineers.

Architect and refine scalable cloud infrastructure software for enterprise and internet-scale environments. Responsibilities include developing robust software, designing systems supporting 1,000+ nodes, optimizing performance, and collaborating with distributed technical teams in agile environments.

Build and maintain full-stack applications, microservices, APIs, and highly available AWS services using Node.js and event-driven architectures. Develop tested, documented code across front-end and back-end layers, deploy and scale applications, monitor systems with Datadog, and contribute to technical design and production support. Collaborate with stakeholders, reverse-engineer legacy applications, use AI-assisted development tools, and own ambiguous projects through completion while contributing to quality improvements.

Lead technical design and delivery of large-scale, cloud-native marketing platforms. Build distributed Java/Spring Boot services, REST APIs and web frontends, drive platform modernization on AWS/Databricks, champion quality, observability, automation, and GenAI adoption, and lead cross-functional engineering teams.

Join an on-site Chicago team building high-performance C++ trading systems. Contribute to design, development, testing, profiling, and troubleshooting. Collaborate with traders and senior engineers, receive mentorship, and gain exposure to the full lifecycle of low-latency trading platform development.

Join an on-site Chicago team building high-performance C++ trading systems. Design, develop, test, profile, and troubleshoot low-latency applications while collaborating with traders and senior engineers. Receive mentorship, training on markets, and exposure to production lifecycle and performance tuning.

Design, implement, and maintain C++ components for a global electronic trading platform. Collaborate on system design, perform code reviews, troubleshoot production issues, and improve system stability while participating across the software development lifecycle.

Build and maintain Python backend services, REST APIs, WebSocket endpoints, cloud data-ingestion systems, and IoT device-management capabilities. Design PostgreSQL schemas and data strategies, improve telemetry reliability, develop automated tests, troubleshoot production systems, and support CI/CD, monitoring, and infrastructure. Collaborate with embedded, hardware, frontend, and product teams to deliver end-to-end features for provisioning, fleet management, firmware updates, and real-time device communications.

Build the core infrastructure for an AI-native investment research and automated trading platform. Responsibilities include experiment environments, compute orchestration, storage, observability, deployment pipelines, sandboxed agent tooling, data ingestion and versioning, backtesting, production reliability, monitoring, failure recovery, and AI-native engineering practices. Collaborate closely with researchers and quants to move ideas from experiments into deployed strategies.

Develops mission-critical software for SpaceX simulation and flight systems. Responsibilities include prototyping, building high-performance real-time data streaming modules, maintaining flight software and high-fidelity simulations, improving platform reliability and scalability, and contributing to test automation and CI/CD infrastructure. The role partners with engineering teams and customers to deliver capabilities for ground and space systems.

Build and own full-stack software supporting simulation, emulation, flight systems, and vehicle analysis. Develop prototypes, high-fidelity simulation platforms, and scalable distributed systems used across SpaceX’s design, testing, and operations pipeline. Improve reliability and performance while partnering with engineering users to deliver productivity-enhancing features. The role requires software development experience, full-stack web application expertise, programming in Python, C, C++, or Rust, database experience, and the ability to obtain a Top Secret clearance.

Design, implement, and maintain Java-based microservices and RESTful APIs across cloud-native environments. Build CI/CD pipelines, test automation, and observability integrations. Collaborate in Agile teams, apply security and Domain-Driven Design principles, troubleshoot production issues, and leverage AI developer tools to improve productivity.

Build and own LearnVector’s full-stack AI learning product, including frontend experiences, backend services, data layers, deployment infrastructure, streaming AI interactions, session memory, content pipelines, observability, testing, and CI. The role requires making foundational architecture decisions, integrating LLM APIs, operating production systems, and shipping frequent product improvements in an on-site, early-stage startup environment.

Designs, develops, tests, and maintains complex, scalable software systems. Contributes to architecture, distributed systems, cloud-based solutions, technical projects, troubleshooting, automated testing, and continuous integration. Collaborates with product, design, architecture, and cross-functional teams while mentoring junior engineers and supporting technical decision-making. Evaluates new technologies and drives improvements in software quality, reliability, performance, and development efficiency.

Design and build cloud services and web applications to manage and monitor medical imaging devices. Develop microservices, APIs, data pipelines, dashboards, and front-end interfaces; collaborate with product and design teams, produce regulatory documentation, and participate in on-call rotations and code reviews.

As a Senior Full Stack Software Engineer, you will build and improve products, create user interfaces and APIs, and collaborate with various teams to enhance the customer experience.

The Senior Fullstack Software Engineer will design and maintain scalable features, owning key components, mentoring others, and ensuring code quality while architecting growth within the team's tech roadmap.

As a Founding Software Engineer, you'll build and scale core systems, develop products for pilots, integrate data and AI, and shape architectural decisions.

The Associate Software Developer will contribute to software development, write clean code, assist with API integration, and support cloud-based applications.

As a mid-level Software Engineer, you'll deliver Python-based platform features, collaborate with teams, and maintain system reliability and scalability.

Build and operate full-stack systems, backend services, APIs, and infrastructure. Ship end-to-end user features, deploy products and ML models, integrate with CAD/3D tools, and ensure enterprise-grade security, authentication, multi-tenancy, and observability. Contribute to architecture, design reviews, and cross-team product work.

Own and operate integrations across MES, WMS, QMS, PLM/PDM, and ERP systems. Develop C#/.NET API integrations, monitoring, alerting, logging, retry and reconciliation workflows. Manage PLM/PDM-to-MES pipelines, data mappings, documentation, authentication, access controls, CI/CD, and production support. Lead data migration from legacy finance systems, including extraction, cleansing, validation, cutover, and troubleshooting. The role is fully onsite in Los Angeles and may require extended hours or weekends.

Develop backend software, APIs, microservices, and scalable systems using Java, Spring, Docker, Kubernetes, and cloud technologies. Support system design, solution engineering, risk identification, and software development for client solutions. Collaborate with development teams while applying Linux, DevOps, CI/CD, and open-source tools. The role requires an active TS/SCI clearance, willingness to take a polygraph, and eligibility to obtain a DoD 8570-compliant certification.