Top Senior Level Software Engineer Jobs in CO

Own and produce developer-facing documentation for DNSid including API references (TypeScript, Python, Go), conceptual guides, integration tutorials, developer portal IA, standards/spec writing, changelogs, and CI-validated code samples. Work closely with SDK engineers and developer advocates to document features pre-release, set style and tooling, and ensure docs are machine- and AI-consumable.

Lead development of enterprise Amazon Connect contact flows, serverless Java/Python backend microservices, and React-based agent workspaces. Integrate third-party APIs, implement RESTful APIs and AWS services, deploy LLM-based agent assistance via Bedrock and RAG, and drive observability and CI for the contact center platform.

Lead design and implementation of an enterprise contact center: migrate IVR to agentic AI using Bedrock and Lex; build resilient state management and CCP integrations; create high-scale data pipelines to Snowflake/Athena with Kinesis and Glue; implement observability with CloudWatch, X-Ray, and Grafana; integrate CRM/WFM and PCI payment gateways; and develop automated test and load simulation frameworks for production reliability.

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 and implement rapid software prototypes for ISR, sensor exploitation, tracking, and C2. Support demos, integration events, and field experiments. Lead small developer/test teams, decompose tasks, diagnose multi-application issues, and apply strong coding, debugging, and design skills across Windows and Linux environments.

Lead ownership and evolution of Dropbox's Windows endpoint platform (CorpFleet). Improve endpoint management, Intune workflows, security/compliance, automation, operational reliability, and cross-functional rollout. Mentor engineers and drive multi-phase platform initiatives, documentation, and runbooks to scale secure, reliable endpoint experiences.

The Staff Software Engineer will design and implement solutions for the Websites product, collaborate across teams, and innovate on a scalable web platform for restaurants.

Build and maintain core libraries and developer tooling used across the company. Lead complex projects, design and develop backend APIs and AI-assisted developer features, manage platform components (service templates, LaunchDarkly), troubleshoot production issues, conduct code reviews, influence architecture, and mentor engineers to improve developer productivity.

Design and build scalable, audit-ready backend and full-stack systems for Upstart Bank. Own technical design and delivery of medium-to-large projects, improve reliability, observability, and data consistency, and partner with product, compliance, and operations to deliver regulated fintech solutions.

Design, build, and operate scalable, distributed event-driven systems that automate accounting close and capital risk workflows. Process high-volume financial events into reliable outcomes, lead multi-quarter engineering initiatives, improve reliability and maintainability, and partner with product, analytics, and finance teams.

Lead design, development, and maintenance of scalable .NET web and Windows applications. Build RESTful APIs, integrate front-end frameworks, collaborate with cross-functional teams, drive architectural decisions, perform code reviews and testing, and support deployments and backlog reduction for the eApp portfolio.

Senior fullstack engineer to build and scale Brigit's consumer finance platform. Own end-to-end features across frontend (React/React Native/TypeScript) and backend (Java/REST/SQL), optimize database and APIs for high scale, integrate 3rd-party services, implement risk and transaction algorithms, improve CI/CD, testing, monitoring, and internal tooling to support millions of users.

Lead a product engineering team to own roadmap delivery for customer-facing console, APIs, and developer workflows. Plan roadmaps, drive system architecture, ensure quality/reliability, run execution processes, hire and mentor engineers, coordinate cross-functional dependencies, and incorporate customer feedback to improve product adoption and performance.

Lead and grow a distributed datacenter storage engineering team owning end-to-end storage from NAND/NVMe to filesystems. Design and operate SAN, NFS, and parallel filesystems (VAST, Lustre), optimize performance (RDMA, GDS), ensure reliability, automation, observability, and collaborate with networking, GPU platform, SRE, and product teams.