Top Software Engineer Jobs in CO

Build and maintain lead-to-order business systems across Salesforce and connected platforms. Design complex applications, declarative automation, Apex and Lightning solutions, integrations, APIs, data models, and security controls. Remediate technical debt, lead migrations and tool rollouts, manage testing and cutovers, and ensure production systems are observable, documented, and governed. Partner cross-functionally to translate business requirements into scalable solutions while supporting AI capabilities in go-to-market workflows.

Develop, test, document, and support scalable software solutions for T-Mobile’s customer care operations. Responsibilities include front-end and back-end development with JavaScript, HTML, CSS, and Java; collaboration with engineering teams; software testing; technical documentation; and continuous system improvement. The role operates under close supervision and may involve technologies such as microservices, virtualization, containerization, networking, and big data platforms.

Develops and supports applications using C#, .NET, and Microsoft SQL Server. Responsibilities include implementing features, fixing bugs, writing unit and integration tests, debugging across the application stack, researching solutions, and contributing to maintainable, secure, high-performance software. The role requires collaboration, independent problem-solving, continuous technical growth, and awareness of industry and open-source trends.

Leads and develops a software engineering team building real-time, event-based bonus systems. Oversees people, delivery, governance, quality, architecture, risk mitigation, and SDLC improvements. Drives AI and agentic workflow adoption, mentors developers, removes delivery blockers, and remains technically engaged with scalable, low-latency solutions across backend, frontend, messaging, middleware, and database technologies.

Lead a small team developing and supporting a business-critical verification platform undergoing re-architecture with Golang, React, and cloud technologies. Design and deliver scalable, maintainable, performant systems, oversee solution architecture and code quality, estimate work, and provide technical leadership. Mentor developers, drive knowledge sharing, collaborate with UK teams, and take ownership of solutions from development through production, including facial recognition systems and operational tooling.

Build and maintain real-time event-based systems for the Offers team. Design scalable full-stack solutions using Go, TypeScript, React, SQL, Kafka, and GCP; lead technical projects, establish code quality standards, govern solution design, estimate work, document solutions, and own delivery from development through production. The role also involves mentoring developers, supporting business needs, and serving as an escalation point.

Build and maintain high-throughput, low-latency distributed data systems across ingestion, storage, and retrieval. Optimize delivery pipelines, scale analytical database clusters (ClickHouse), develop GraphQL and log delivery solutions, monitor performance with observability tooling, troubleshoot production issues, and collaborate cross-functionally and with open-source communities to evolve the data platform.

Software Engineering Interns will build and ship high-impact software projects across product, infrastructure, customer experience, mobile, and security teams. Responsibilities include designing, developing, testing, and deploying features; collaborating with multidisciplinary teams; participating in agile development and prototyping; applying user-centered design; and learning through mentorship, technical talks, and feedback. The internship is virtual, full-time, and lasts 12 weeks during Summer 2027.

Paid, full-time software engineering internship supporting high-scale video platform backend services. The intern will develop Java and/or TypeScript microservices, write automated tests, participate in code reviews and Agile ceremonies, analyze backend performance, improve observability, document technical systems, and research modernization opportunities in an AWS-based distributed environment. The internship concludes with a presentation to engineering leadership.

Leads software systems engineering for SATCOM mission planning supporting military NC3 networks. Responsibilities include requirements, architecture, API and backend development, user interface implementation, integration, testing, deployment, code reviews, security, performance improvements, mentoring, and Agile DevSecOps delivery. The role requires onsite work in Colorado Springs, active U.S. Secret clearance, U.S. Person status, and up to 10% travel.

Build and expand fintech and payment systems using Go, microservices, databases, and cloud technologies. Design production APIs and tooling, diagnose customer issues, manage full release lifecycles, document systems, and mentor engineers. Collaborate with product and business teams while guiding AI agents to produce maintainable, observable, testable code that meets engineering standards. Work independently in a high-availability environment and contribute to next-generation financial products.

Design, develop, and test C++ software for RF processing, radar systems, simulations, and toolchains. Translate algorithm descriptions into software, integrate radar systems with experimental data and analytical tools, optimize performance, and participate in code reviews. Collaborate with cross-functional engineering teams to define requirements and deliver reliable, scalable solutions. The role is performed onsite five days per week and requires an active Secret clearance with eligibility for Top Secret/SCI.