Top Software Engineer Jobs

Develop and maintain physics-based space and missile defense models, engagement and mission simulations, and analysis tools using Python and C++. Integrate simulations into SIL, HIL, and distributed environments; perform verification, validation, Monte Carlo studies, and data correlation. Collaborate with engineering and government stakeholders on requirements, testing, and technical recommendations. The role requires aerospace or related experience, knowledge of orbital mechanics or missile trajectories, and eligibility for Secret or TS/SCI clearance.

Design, implement, test, and document software supporting aerospace automated test stations and critical avionics systems. Translate system requirements into software specifications, develop maintainable C++ or C# applications, integrate communication interfaces, and collaborate with multidisciplinary engineering and test teams. The role emphasizes software reliability, verification, documentation, troubleshooting, and compliance with safe coding practices. A bachelor’s degree, 0–1 year of experience, U.S. citizenship, and ability to obtain a security clearance are required.

Develops, supports, and maintains manufacturing software, databases, analytics systems, monitoring solutions, and IT utilities for technology development and high-volume manufacturing facilities. Resolves downtime, troubleshoots software, analyzes data, improves production and process efficiency, contributes to AI workflows, maintains KPIs, and creates support documentation. Collaborates with global infrastructure, development, engineering, and customer teams to deliver reliable software and high-quality IT support.

Develop and maintain telemetry and command database schemas, data models, APIs, services, pipelines, and database-backed applications for spacecraft and flight-test systems. Translate engineering requirements into reliable data solutions, implement automated validation and testing, optimize database performance, troubleshoot data pipelines, support CI/CD and migrations, and collaborate with systems, flight software, test, database, and mission operations teams.

Senior Software Engineer responsible for architecting, developing, and scaling consumer- and agent-facing web and mobile experiences. The role involves making technical decisions, building backend APIs and full-stack applications, collaborating across product teams, applying distributed-systems and cloud architecture, improving code quality with AI tools, and mentoring junior engineers.

Develop and integrate software content using Git, extract localization strings from design specifications, support Translation Memory tools, define localization standards, review UI designs, troubleshoot defects, coordinate with external teams and translation vendors, and perform quality analysis of translated strings. The role requires Android and software development experience, Agile practices, change management tools, localization, Git workflows, C#, Windows applications, SQL, and PostgreSQL.

Develops reliable cloud-native and AI-native software under senior guidance. Responsibilities include implementing features, writing tested code, integrating AI/ML services, developing ServiceNow workflows and applications, debugging issues, participating in code reviews, supporting CI/CD pipelines, and assisting with customer issue triage and documentation.

Lead the technical direction and delivery of Bitcoin and stablecoin experiences for iOS across Cash App, Square, and Bitkey. Build and ship complex features end to end, establish architecture and shared systems, integrate backend services, improve testing and release safety, and mentor engineers. Collaborate across product, design, Android, web, and backend teams while applying AI-assisted development practices and contributing to secure, reliable customer experiences.

Build and improve full-stack software for engineers operating mission-critical hardware. Responsibilities include developing React and TypeScript/JavaScript interfaces, contributing to backend services and APIs, creating reliable data flows, debugging across systems, writing tested code, and collaborating on greenfield products. The intern will work closely with software engineers and operators while gaining experience across frontend, backend, databases, and hardware-connected systems.

Lead technical direction and hands-on development of Bitcoin and stablecoin iOS products across Cash App, Square, and Bitkey. Own architecture, implementation, testing, service integration, rollout, observability, security, and post-launch improvements. Build foundational systems, mentor engineers, influence cross-team standards, collaborate across platforms, and integrate AI-assisted development tools while maintaining software quality and reliability.

Design, build, and maintain high-throughput, low-latency backend APIs and microservices for flight search, booking, payments. Own features end-to-end, ensure resiliency with testing and observability, collaborate with cross-functional partners, and modernize cloud-native systems at scale.

Build full-stack AI governance and observability features for Hex’s data platform. Responsibilities include developing React and TypeScript interfaces, backend language parsers, SQL generation, AI context systems, semantic models, agent audit tools, and workflows for governing and debugging AI-generated answers. The role requires solving front-end UX and backend scalability challenges while working with data teams and modern data warehouse technologies.

Build and maintain Hex’s core compute platform for code execution, SQL querying, and data processing. Design backend data systems, APIs, caching, dependency frameworks, and performance optimizations across the stack. Work with Python, SQL, databases, data processing systems, and collaborative notebook interfaces. Engineers will improve platform usability, monitoring, scalability, and speed while collaborating effectively in a remote-first environment.

Design and evolve shared backend infrastructure, including APIs, realtime transport, storage frameworks, background job systems, workflow orchestration, and internal tooling. Improve reliability, performance, observability, and security while partnering with product teams on reusable abstractions. Lead technical design discussions, drive migrations and refactors, mentor engineers, and help establish backend architecture and engineering standards.

Build backend-leaning product features for Hex’s AI analytics platform, including APIs, CLI workflows, MCP integrations, access-control systems, enterprise administration, and full-stack product changes. Design scalable systems, implement complex business logic, collaborate through RFCs and code reviews, and contribute across the application stack. The role uses TypeScript, GraphQL, Postgres, Redis, Kubernetes, AWS, and related infrastructure technologies.

Build full-stack growth and monetization features across onboarding, activation, billing, and core product experiences. Run experiments, analyze funnel metrics, improve conversion and engagement, and collaborate with Product, Design, Data, and Marketing. The role requires ownership of business outcomes, robust instrumentation, and pragmatic product decision-making. Engineers work across React, TypeScript, Python, GraphQL, backend services, databases, infrastructure, and experimentation tooling.

Develop, test, maintain, and support secure, scalable software applications and services. Translate requirements into maintainable components, contribute to APIs, microservices, distributed and event-driven systems, and maintain automated tests. Collaborate with Product, QA, Security, DevOps, and Operations teams while supporting cloud applications, monitoring performance, troubleshooting issues, and contributing to CI/CD, observability, reliability, and secure coding initiatives.

Build and maintain scalable full-stack experimentation and analytics applications using Java, Spring Boot, TypeScript, React, Databricks, and Spark. Develop APIs, backend services, frontend components, and data-processing capabilities; contribute to architecture, testing, deployment, performance optimization, and production support. Collaborate with Product, Data Engineering, QA, and business stakeholders to deliver reliable cloud-native solutions and continuously improve engineering practices.

Entry-level software engineers will contribute to team projects, write tested and extensible code, navigate large codebases, debug and review code, collaborate with stakeholders, manage quality and delivery trade-offs, and actively pursue professional growth. The role is part of Affirm’s early-career program and involves hybrid work in New York City or San Francisco during the first year.

Develop and maintain well-tested, extensible software that supports Affirm’s team projects and business goals. Collaborate with engineers and stakeholders, navigate and debug large codebases, participate in code reviews, communicate risks and trade-offs, and balance delivery speed with system quality and reliability. New graduates will receive mentorship and work across teams and technology stacks in a hybrid early-career program.

Develops and supports web-based applications across the full technology stack. Responsibilities include implementing features, writing unit and integration tests, debugging operating system, database, application, JavaScript, and network issues, participating in code reviews, documenting solutions, researching technologies, and mentoring team members within an Agile environment.

Build and ship member-facing web features using React, Next.js, and Tailwind CSS. Implement responsive, accessible interfaces, test user journeys, participate in code reviews, collaborate with product, design, and backend teams, and contribute to performance and maintainability. The role includes AI-assisted prototyping, frontend API integration, learning team systems, and participating in on-call rotations under senior guidance.

Paid, full-time software engineering internship supporting Microsoft 365 collaboration platforms. Interns will administer and troubleshoot SharePoint Online, OneDrive, Power Apps, and Power Automate; respond to support tickets; work with business users to gather requirements; develop applications and workflows; research technologies; and document solutions. The role includes mentorship, professional development, networking, and cross-functional projects.

Paid, full-time software engineering internship supporting Microsoft 365 collaboration tools. The intern will help administer and troubleshoot SharePoint Online, OneDrive, Power Apps, and Power Automate; respond to user support tickets; gather business requirements; develop applications and workflows; research platform features; and document solutions. The role includes mentorship, professional development, networking, and cross-functional internship activities.

Designs, develops, tests, debugs, deploys, monitors, and operates web applications and RESTful services. Collaborates with stakeholders and product owners to refine requirements into technical solutions, performs code reviews, communicates with technical and business teams, and mentors junior engineers. The role supports enterprise technology modernization and requires software development experience with relational databases, .NET Core or similar languages, agile practices, and AI development tools.