Top Software Engineer Jobs in Denver & Boulder, CO

Develop and deploy data solutions using Palantir Foundry and AIP for client engagements. Lead technical teams, coach team members, analyze system interactions, build applications with large datasets, and apply data engineering and analytics to deliver client outcomes. The role also includes managing client relationships, planning and executing projects, encouraging technology adoption, resolving stakeholder conflicts, and driving continuous improvement.

Leads the development and deployment of data solutions using Palantir Foundry and AIP. Manages engineering teams, coaches team members, oversees project planning and execution, analyzes system interactions, manages client relationships, and drives innovation. The role applies software engineering, data engineering, analytics, and AI/ML techniques to deliver scalable client solutions while maintaining technical and professional standards.

Leads the development and deployment of software and data solutions using Palantir Foundry and AI/ML technologies. Responsibilities include data engineering, analytics, system improvement, client account management, project ownership, team leadership, coaching, stakeholder engagement, and continuous improvement. The role requires building scalable applications with large datasets and delivering customer-focused solutions.

Develop and maintain satellite command-and-control, mission-planning, mission-data processing, and data-analysis software using Elixir. Collaborate on architecture, design, and code reviews while working across engineering disciplines. The role requires functional programming, resilient and fault-tolerant distributed systems, front-end development, live-system debugging, and strong communication. Preferred experience includes Elixir OTP, React, TypeScript, OAuth2, network protocols, databases, and distributed-system monitoring.

The Founding Engineer will lead the development of Sailor Health's AI-powered platform, building systems for patient care and mentor the engineering team.

Design, build, and test flight software for spacecraft systems and mission tools. Collaborate with development teams to write and debug code, participate in code reviews, support artificial intelligence projects, and gain experience across the software development lifecycle. Interns also complete professional development activities, workshops, and leadership sessions while receiving mentorship from aerospace industry experts.

Design, develop, integrate, and maintain ERP financial applications using Oracle and PL/SQL. Optimize performance, resolve defects and integration issues, apply security and compliance standards, participate in Agile/Scrum, lead code reviews, estimate work, and mentor junior developers to support finance operations and revenue objectives.

Lead the development of an AI-powered platform for senior mental health, building systems for patient experience, and mentoring the engineering team.

Develops and maintains .NET applications using C#, Microsoft SQL Server, unit and integration testing. Responsibilities include building features, fixing bugs, debugging across the application stack, making maintainability and performance decisions, researching solutions, communicating design choices, and collaborating with engineering peers. The role requires approximately 2–3 years of C# and MSSQL experience, Agile development experience, and a bachelor's degree or equivalent practical experience.

Build the core AI platform for an AI-native trading experience. Develop a high-performance Rust backend supporting streaming responses, low-latency tool execution, caching, and model orchestration. Design secure, observable APIs and runtime components with authentication, authorization, rate limiting, auditing, tracing, retries, and fallbacks. Build safe trading action infrastructure with deterministic previews, confirmations, idempotency, and audit logs while partnering with product and frontend teams.

Build and ship backend features end-to-end using Ruby on Rails and SQL. Lead complex technical projects, solve architecture challenges, establish standards, conduct meaningful code reviews, resolve high-risk bugs, document systems, collaborate across engineering teams, and mentor junior engineers.

Build a high-performance frontend data platform for exploring and analyzing hardware telemetry. Develop React and TypeScript applications, interactive time-series visualizations, data visualization plugins, complex application state management, and LLM-assisted analysis workflows. Collaborate directly with hardware engineers and customers to define interfaces, prototype workflows, demonstrate features, and incorporate feedback into product development.

Leads software systems design and development for complex products and platforms, overseeing architecture, coding, testing, integration, and quality. Manages internal and outsourced engineering partners, evaluates designs and development activities, drives technology innovation, and provides cross-organization technical leadership, mentoring, and guidance. The role requires advanced expertise in software architecture, multi-platform integration, testing methodologies, debugging, and communication with senior stakeholders.

Develop and ship phased software projects for Affirm’s mobile card acquisition team. Collaborate with product, design, and analytics stakeholders; build web and mobile applications and scalable APIs; monitor operational metrics; support availability and on-call efforts; participate in code reviews, interviews, and team development.

Develop and launch scalable full-stack search systems using JavaScript, TypeScript, Python, or Kotlin. Collaborate with engineers and stakeholders, balance delivery speed with system reliability, debug code, participate in code reviews, write tested and extensible software, and contribute to team growth and communication.

Designs and develops scalable, concurrent software for HPE’s Alletra enterprise storage platform using modern C++ and Linux. Responsibilities include building distributed storage features, debugging performance and reliability issues, creating automated tests, participating in architecture and code reviews, integrating technologies, and mentoring engineers. The role requires expertise in systems infrastructure, multithreaded programming, algorithms, data structures, and software architecture.

Develops and maintains software requirements, architectures, algorithms, APIs, backend services, and user interfaces for SATCOM mission-planning systems. Supports Agile and DevSecOps development across design, integration, testing, and deployment, including CI/CD automation, vulnerability scanning, code reviews, and performance optimization. The role works with space and ground systems, geospatial visualization, databases, Kubernetes, and modern front-end technologies. It requires active Secret clearance, U.S. citizenship, full-time onsite work in Colorado Springs, and up to 10% travel.

Develops, integrates, tests, maintains, and supports Java-based software systems and mathematical algorithms for Boeing’s C2BMC missile defense applications. Responsibilities include software architecture, requirements decomposition, interface development, design documentation, coding, debugging, performance optimization, agile execution, integration and testing, operational support, and technical issue resolution. The role collaborates with systems engineering, integration and test teams, and industry partners while supporting full software lifecycle activities for ballistic missile defense systems.

Build and launch scalable fullstack web applications and APIs for Affirm’s Ads Platform. Collaborate with product, design, analytics, and engineering partners to break projects into deliverable phases, make technical trade-offs, write tested and extensible code, monitor service metrics, support on-call operations, review code, and participate in team development and interviews.

Develop backend tools and systems that improve batch development, testing, workflow efficiency, and reliability. Collaborate with product, infrastructure, design, and analytics teams; break projects into deliverable phases; build scalable, well-tested code; monitor metrics; support system availability and on-call operations; debug code; conduct reviews; and contribute to engineering growth and hiring activities.

Build and improve high-traffic consumer web experiences using React and TypeScript. Contribute to experimentation, client-side tagging, marketing integrations, attribution, measurement, performance, testing, observability, and privacy-aware development. Collaborate with Product, Design, Marketing, Analytics, Data Engineering, and senior engineers. Break down projects, write reliable and extensible code, support operations and on-call efforts, participate in code reviews, and contribute to team growth.

Designs, develops, integrates, and certifies a company-wide digital test procedure application. Responsibilities include full-stack software development, requirements analysis, architecture support, implementation, testing, cross-functional collaboration, Agile development, process improvement, and enterprise application maintenance. The role works on-site at least three days per week and may involve travel between company locations.

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.

Build and operate full-stack software for the company’s digital thread, including services, APIs, data models, user interfaces, integrations, data migrations, and workflow automation. Write tests, participate in code reviews, monitor production systems, resolve data and user issues, and document technical work. Engineers will progressively own larger features while learning product-data systems and supporting aerospace engineering operations.

Design and implement backend APIs, microservices, and checkout platform components for Affirm’s financial products. Own system health, improve performance and reliability, collaborate across engineering teams, and contribute to technical standards, tooling, and processes. The role requires developing, testing, and shipping high-quality software at scale while making customer-centric technical decisions.