Top Tech Jobs & Startup Jobs in Denver & Boulder, CO

Build, optimize, and deploy production-grade generative AI applications. Design multi-agent systems and LangGraph workflows, implement advanced RAG with LlamaIndex and vector DBs, fine-tune and host LLMs, integrate/swap commercial and open-source models, and deliver scalable FastAPI/async backends with Docker, monitoring, and CI/CD.

Design and implement browser automation and AI-assisted workflow solutions. Build integrations with enterprise applications and APIs, handle authentication, orchestration, exception handling, and improve reliability and performance of automation systems.

Lead and mentor QA team to define QA strategy and processes. Design, develop, and maintain Java-based Selenium/Cucumber automation frameworks, integrate tests into CI/CD pipelines, test cloud-hosted AWS applications, manage defect lifecycle, define test plans and metrics, and collaborate with DevOps, development, and product teams to ensure software quality across the SDLC.

Design, build, and maintain secure, high-performance RESTful APIs and microservices using Java and Spring Boot. Collaborate with cross-functional teams, implement API security (OAuth2/JWT/OpenID Connect), optimize databases, integrate messaging systems, write unit/integration/API tests, participate in code reviews and architecture decisions, troubleshoot production issues, and contribute to CI/CD and DevSecOps practices.

Build and deliver backend enterprise web applications for Citi's Integrated Digital Assets Platform using Java/Spring and web3 technologies. Collaborate with distributed teams, follow best practices and design patterns, write technical documentation, resolve issues, and ensure scalability, reliability, and performance.

Design, develop, and maintain scalable full-stack web applications using Java/Spring Boot backends and React frontends. Build RESTful APIs and microservices, implement responsive UIs, write tests, participate in code reviews, troubleshoot production issues, and contribute to CI/CD and DevSecOps practices.

Lead architecture and delivery of enterprise Java full-stack applications. Hands-on development with Java/Spring Boot, microservices, AWS cloud-native services, database tuning (Oracle/RDS), CI/CD pipelines, monitoring, and incident resolution. Mentor engineers, enforce code quality, run architectural reviews, and collaborate with product, DevOps, and security teams to ensure scalable, secure, high-availability solutions.

Design, build, and maintain responsive, high-performance React web applications. Create reusable UI components, integrate with REST/GraphQL backends, optimize performance and cross-browser compatibility, participate in code reviews and sprints, and collaborate with designers, backend, QA, and DevOps to deliver enterprise-scale features.

Lead strategy, discovery, and delivery of consumer-facing digital products. Drive roadmap, define PRDs and KPIs, conduct customer research, prioritize backlog, partner with engineering/design, use analytics and experimentation, and incorporate AI-enabled features and workflows.

Design and implement scalable S/4HANA finance architecture and FPSL subledger/ledger solutions. Ensure end-to-end data flow to the Universal Journal, optimize performance and batch processing, own Result Data Layer and Subledger Journal components, align technical solutions with accounting, mentor junior staff, and drive reliability, auditability, and fast financial close processes.