Top Software Engineer Jobs in CO

The Software Engineer will develop Java-based applications, support the software development lifecycle, and mentor junior engineers in a missile defense project.

The role involves designing and implementing simulation software for spacecraft using C++ and collaborating on algorithms for orbital mechanics and control.

Lead the engineering effort for a seed-stage dating app: audit and improve the existing codebase, design and build v2 (mobile and backend), implement real-time features, define engineering standards, scale infrastructure on AWS, and, after fundraising, hire and mentor a small team while shaping the technical roadmap.

Own and assess the existing Flutter codebase, recommend improvements, architect and build a 2.0 version post-funding, implement real-time features, scale infrastructure (NestJS, MongoDB, AWS), set engineering standards, and hire/mentor a small engineering team as a founding technical leader.

Build and optimize backend data pipelines and calculations for 7M+ securities using Python/Django. Implement Airflow pipelines, pandas/Celery-based async calculations, database query tuning, caching, scalable data models, incident investigation, code reviews, and cross-team collaboration to ensure timely, accurate financial data.

Lead architecture, modernization, and development of Group Insurance applications. Modernize mainframe monoliths into Java microservices and micro-frontends on cloud, mentor distributed Agile teams, collaborate with enterprise architecture, product owners and infrastructure, and enable test automation and integrations. Approximately 10% domestic travel.

Serve as the technical lead for partner integrations of DNSid: design and build production-grade integrations, run POCs and workshops, produce enablement materials, translate partner requirements into product feedback, and own the path from demo to deployment while collaborating with product, standards, and engineering teams.

Lead an agile team to design, implement, and maintain enterprise C# (ASP.NET) applications. Build features, troubleshoot full-stack issues, mentor engineers, integrate AI-assisted tools, design automated test suites (unit, integration, end-to-end), and maintain CI/CD pipelines to ensure high quality, performance, security, and availability.

Lead ServiceNow implementations for enterprise customers: design, develop, integrate, and maintain scalable ServiceNow solutions (ITOM, Discovery, Service Mapping, AIOps). Build custom scripts and integrations, troubleshoot, participate in SCRUM, and work directly with customers to deliver projects on time.

This role involves leading technical projects across multiple teams, designing scalable systems, collaborating with cross-functional teams, and mentoring engineers, focusing on payroll and tax systems at Gusto.

Design, build, and maintain a new cross-platform Flutter app for iOS and Android. Implement state management (Riverpod/BLoC/Provider), integrate RESTful APIs, optimize performance and security, manage app lifecycle and store deployments, work in an agile CI environment, and collaborate across the product team.