Top Senior Level Software Engineer Jobs in CO

Leads delivery of complex software features for desktop utility design tools, translating ambiguous requirements into technical plans and managing performance, correctness, and reliability. Establishes architecture, coding standards, CI/CD and AI-assisted development practices; mentors engineers and leads design and code reviews. Partners with product, QA, delivery, and customers to create reusable solutions, contribute to roadmaps, and represent the team in architecture discussions.

Build and scale full-stack benefits renewal products using Ruby on Rails and JavaScript/React. Design frontend experiences, backend APIs, automated workflows, and tests; own features from specification through launch and iteration. Lead complex, multi-quarter initiatives, collaborate cross-functionally, conduct experimentation, mentor engineers, and apply AI tools to accelerate development and improve testing. The role focuses on reducing errors and simplifying health insurance renewal processes for customers.

Manage the Loans Lifecycle software engineering team at Affirm. Set technical strategy, lead delivery of business-critical projects, ensure system reliability and operational readiness, establish quality standards, collaborate with product and analytics teams, and coach engineers. The role focuses on highly available distributed financial systems and audit-grade ledger technology using backend technologies including Python, Kotlin, AWS, MySQL, Spark, and Kubernetes.

Design, develop, test, and support high-performance Roku streaming applications using C++, NDK, and Qt. Responsibilities include responsive UI development, REST API integration, video playback optimization, authentication and commerce flows, automated testing, debugging, analytics instrumentation, code reviews, production deployments, certification, and post-release support.

Lead development, maintenance, and optimization of high-volume billing platforms supporting revenue operations. Architect AI and machine learning solutions to automate billing workflows, prototype scalable capabilities with product and engineering partners, and eliminate operational bottlenecks through automation and deployment pipelines. Establish engineering standards, conduct architectural reviews, and build observable, secure, PCI-compliant microservices and distributed systems.

Leads a high-performing software engineering team responsible for customer activation, engagement, and expansion across a travel marketplace. Oversees end-to-end project delivery, promotes AI-driven engineering practices, improves agile processes, and partners with product, data, and design. Drives experimentation, scalability, security, technical excellence, and customer-focused product adoption while developing team talent and aligning engineering priorities with business goals.

Senior Database Administrator responsible for designing, implementing, monitoring, tuning, securing, and maintaining Oracle, cloud, and NoSQL databases. The role manages high availability, backup and recovery, disaster recovery, capacity planning, performance optimization, and 24x7 production support. It also requires collaboration with development teams, documentation, project delivery, troubleshooting, and mentoring junior database administrators. The position supports Oracle, MongoDB, Cassandra, Amazon DocumentDB, and AWS RDS environments.

Build Apollo’s AI-powered Builder Studio end to end, including chat-driven app creation, live previews, generated-app runtimes, workflows, integrations, delegated permissions, security, and reliability. The role requires strong full-stack development, production LLM experience, frontend expertise with complex UIs, backend and workflow design, and ownership of an ambiguous 0-to-1 product.

Lead Headway’s Web Platform team of five frontend engineers. Own frontend strategy, design systems, web architecture, accessibility, performance, testing, and agentic UI workflows. Hire and develop engineers, manage performance, align with Design and product teams, define roadmaps and metrics, and advocate for frontend standards company-wide. Remain hands-on with code and AI tools while evolving shared frameworks, tooling, documentation, and automated quality checks.

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.

Build and maintain authentication and fine-grained authorization systems using Auth0 and OpenFGA. Own OAuth 2.0 and OpenID Connect implementations, identity federation, token flows, and permissions for AI agents. Lead cross-team technical projects, set engineering standards, review code, and mentor engineers. The role requires strong backend development skills and experience with identity providers, ReBAC systems, and complex multi-tenant authorization models.