Top Full-Stack Engineer Jobs in Denver & Boulder, CO

Develop backend microservices and RESTful APIs with Java and Spring Boot, build Angular and TypeScript web applications, and deploy scalable cloud solutions on AWS. Design PostgreSQL databases, containerize applications with Docker and Kubernetes, implement GraphQL integrations, and maintain automated tests. Monitor production systems using Grafana and CloudWatch, provide on-call incident support, document technical work, collaborate with stakeholders and QA, and support software releases and integrations.

Staff Software Engineer responsible for technical strategy, architecture, and development of web and mobile authentication experiences. Leads major technical initiatives, partners with product, design, and analytics, improves reliability and operational readiness, establishes engineering standards, and mentors team members. Requires extensive experience building web applications with React or Vue, proficiency in JavaScript or TypeScript, strong system architecture and communication skills, and a related degree or equivalent experience.

Develop and operate a large-scale internal cloud management platform. Build APIs, UIs, CI/CD pipelines, and developer productivity tools using Go and TypeScript. Maintain Temporal and Argo Workflows pipelines, integrate development tooling, improve SDLC efficiency, support SOC 2 compliance, and collaborate with engineering, security, infrastructure, and SRE teams. Participate in on-call operations and apply AI technologies to improve workflows and decision-making.

The Senior Full-Stack Engineer will manage client relationships, design integration solutions, and ensure seamless delivery and optimization of technical workflows, while leveraging AI for efficiency.

Leads software teams developing, integrating, deploying, and maintaining full-stack mission applications for DoD and intelligence customers. Builds prototypes, scales applications, develops responsive frontend features, integrates systems, collaborates with government operators, and conducts deployment and field testing in secure environments. The role requires customer relationship management, technical leadership, software engineering expertise, and active security clearance.

Lead technical strategy and execution for Affirm’s account management team, building secure, scalable fullstack systems and customer account security experiences. Collaborate with product, design, analytics, and engineering teams; establish quality, monitoring, testing, and operational standards; support availability and on-call practices; communicate technical decisions; and mentor engineers.

Leads full-stack software teams developing, integrating, deploying, and maintaining mission-critical applications for DoD and intelligence customers. Builds prototypes and user-focused features, integrates systems and APIs, collaborates with military and government operators, and conducts deployment, field testing, and triage in secure environments. Requires expertise in React, TypeScript, Python, high-performance interfaces, secure software deployment, customer engagement, and national security missions.

Develop and maintain a full-stack web application and platform for fraud analysis. Build APIs and user interfaces, write automated tests, troubleshoot production issues, collaborate with product, design, data science, infrastructure, and solutions engineering teams, and participate in on-call support. Use React, Golang, Python, PostgreSQL, Docker, and AWS technologies to deliver reliable products and meet service-level requirements.

Develop and maintain a fraud-analysis web application and platform. Build APIs and user interfaces, write automated tests, troubleshoot production issues, collaborate with product and cross-functional teams, analyze product metrics, and support SLA compliance through production on-call rotation.

Build and maintain fullstack features for GitLab’s post-purchase subscription lifecycle, including renewals, billing accounts, auto-renewal, overages, reconciliations, and subscription visibility. Partner with Product and Design, integrate billing and customer systems, write reliable tested code, support safe rollouts and monitoring, participate in code reviews and incident response, and reduce technical debt and architectural risk.

Build and maintain scalable backend platforms for capital orchestration, transaction reconciliation, collateral movement, data pipelines, and business workflows. Collaborate with engineers, product managers, designers, analysts, and business stakeholders to design systems, write tested code, improve reliability, and deliver projects incrementally. Support production operations through monitoring, metrics, debugging, code reviews, and on-call responsibilities.

Staff Software Engineer responsible for technical strategy, scalable full-stack systems, team operations, reliability, monitoring, code quality, and talent development. The role involves building customer-facing card experiences and backend services using Python or Kotlin, AWS, MySQL, Spark, Kubernetes, and React-based frameworks. The engineer will own features end to end, collaborate cross-functionally, manage technical risks and trade-offs, support on-call health, and apply AI safely to improve development and customer experiences.

Build and ship custom full-stack programs for AI labs and product teams, including capture flows, task logic, data pipelines, validation, redaction, provenance, and delivery across web, mobile, and backend systems. Partner directly with technical customers to scope ambiguous requirements, determine what to reuse or build, ship production code, establish data quality processes, and turn repeatable custom solutions into core platform capabilities.

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.

Develop and operate CrowdStrike’s internal cloud management platform and mission-critical CI/CD pipelines. Build APIs and UIs using Go and TypeScript, improve developer productivity, integrate tooling, maintain cloud-native infrastructure, and support secure, highly available software delivery systems. Collaborate with development, infrastructure, security, and SRE teams, ensure SOC2-aware processes, and participate in on-call operations.

Provides technical leadership on complex, high-impact engineering projects from design through launch. The role involves architecture, company-wide initiatives, engineering excellence, mentoring technical leaders, and establishing standards for scalable, reliable, secure, observable systems. The engineer will collaborate across teams, communicate complex technical topics, and apply customer-focused decision-making and A/B testing techniques.

Build and deliver business services, APIs, customer-facing applications, and integrations for mission-critical space analytics products. Develop both backend services and rich interactive user interfaces, deploy software to cloud and on-site environments, integrate with data platforms, and contribute across the full software development lifecycle. Collaborate within an Agile team, participate in code reviews, support production operations, and provide on-call coverage during critical escalations.

Develop and maintain scalable full-stack web applications for measurement and reporting. Build responsive interfaces, RESTful APIs, backend services, microservices, database integrations, and automated tests. Optimize performance, scalability, reliability, and data integrity; troubleshoot complex issues; conduct code reviews; mentor junior engineers; and collaborate with cross-functional teams and contractors.

Build and maintain full-stack web application features for a telehealth platform. Develop frontend interfaces with JavaScript, TypeScript, React, and Next.js; implement backend services with Node.js; integrate APIs and SQL databases; troubleshoot bugs; write tested, maintainable code; participate in reviews and planning; and gradually take ownership of features while collaborating with product, design, and engineering teams.

Build and ship reliable full-stack software for high-stakes hospital workflows. Own projects end-to-end across product, machine learning, data pipelines, cloud and on-prem infrastructure. Develop backend and frontend features, APIs, integrations, and database systems while collaborating with product and clinical users. Contribute to prototyping, testing, weekly enhancements, and team culture. The role is remote-first across Europe and the US, with international travel to hospitals required.

Build and maintain reliable full-stack applications for high-stakes hospital environments, specializing in frontend architecture, design systems, modularity, mobile readiness, and cross-device experiences. Collaborate with design, product, and machine learning teams; mentor engineers on frontend practices; deliver frequent enhancements with minimal regressions; and own projects end to end. Some international travel to hospitals is required for workflow observation and clinical-user collaboration.

Build and own end-to-end features for a new consumer marketplace connecting homeowners with vetted contractors. Responsibilities include developing mobile and web experiences, backend services, REST APIs, microservice architectures, geolocation matching, integrations with contractor tools, testing, and rapid product iteration. The role requires independent ownership, collaboration with product and design, and use of AI tools to accelerate development.

Develop and maintain full-stack enterprise applications, APIs, backend services, databases, integrations, and responsive interfaces. Lead Azure hosting, CI/CD pipelines, test automation, monitoring, security, and deployment practices. Integrate ERP, CRM, CPQ, MES, and related systems while automating business processes and improving reliability. Collaborate with analysts and QA to translate requirements into technical solutions, support releases, troubleshoot production issues, and perform root-cause analysis.

Build Lattica’s frontend, backend architecture, infrastructure, risk engine, and lending systems. Own features end-to-end, including product decisions, deployments, reliability, and iterative delivery. The role values backend systems experience, UI/UX implementation, quantitative or risk-system familiarity, and interest in DeFi, trading infrastructure, or prediction markets. Experience with DevOps, cloud platforms, statistics, MLOps, blockchain, smart contracts, C++, or Rust is advantageous.

Develop and maintain scalable full-stack enterprise applications across front-end, back-end, APIs, databases, and cloud platforms. Build microservices, optimize systems and performance, contribute to architecture and CI/CD practices, and ensure secure, maintainable code. Collaborate with Product, Design, Architects, and Engineering teams to deliver features from concept through production while troubleshooting and upgrading existing systems.