Software Engineer Jobs in Colorado, United States

Northrop Grumman Space Sector Eastern Software and Controls team develops satellite ground software for command and control, mission planning, and visualization. The Principal Software Engineer leads full‑stack development across OS, platform, and mission‑specific layers, designing client/server applications using C++, Python, Docker/Kubernetes, and cloud infrastructure.

Ground Software Team at Katalyst Space Technologies builds the foundational software that enables robotic spacecraft operations and mission-critical ground procedures. The role reviews and enhances the current ground stack, creates automated tooling, mentors engineers, and drives code quality to support reliable space missions.

Sierra Space builds missions and systems that keep the world secure in the domain above Earth, safeguarding national security and sustaining human presence in space. The Software Engineer III (Flight Software) role designs, develops, and tests software applications for space systems, writing clean maintainable code, architecting complex systems, collaborating on requirements, and mentoring other engineers.

Sierra Space is a space and defense technology company building missions and systems that keep the world secure above Earth. The Software Engineer III/Sr/Principal, Flight Software (Contractor) role focuses on designing, developing, and testing flight software and algorithms for spacecraft missions, both civilian and DoD. Responsibilities include writing clean, maintainable code, architecting complex software systems, collaborating with team members, using Git for version control, participating

X Lab at Northrop Grumman Space Systems—Missile Defense Integration develops critical command and control software for the C2BMC program. The Principal Software Engineer designs, builds, and secures Java applications using Spring, HTML, XML, and JavaScript, and supports deployment across Windows and Unix/Linux environments.

NVIDIA is a leader in computer graphics, gaming, and accelerated computing, now expanding into AI-driven computing. This Distinguished Software Engineer role focuses on NVLink Fusion, a platform that integrates NVIDIA GPUs, NVLink, InfiniBand, Grace CPUs, and AI/HPC software to deliver scalable, high‑performance AI workloads.

ADC Hardware & Software Team at Amazon Web Services (AWS) builds embedded software for custom FPGA SoCs and high‑assurance 400G+ networking solutions. The SDE develops Rust‑based firmware, low‑level ARM and RISC‑V drivers, Linux kernel modules, and implements cryptographic security standards, collaborating with hardware and system engineers and maintaining CI/CD test pipelines.

The Device Analytics Services Team at Amazon Devices builds observability solutions for Amazon devices and applications such as Alexa devices, Fire TV, Fire Tablets, Kindle, and Ring. As a Software Development Engineer, you will own and deliver features across the full software lifecycle for both device software and cloud services, working backwards from customers to design reliable, maintainable solutions.

Senior Software Engineer needed to design, develop, and maintain backend systems for HPE's Private Cloud portfolio. Focus on Java, Python, and cloud technologies, collaborating with cross‑functional teams to deliver scalable solutions.

CACI is seeking a Chief Engineer/Principal Software Engineer to lead technical execution for a large-scale government program supporting a modern data lake system for national critical operations. Partnering with a Chief Architect, you will manage delivery, operational rigor, engineering standards, and team enablement for a distributed team of 45+ engineers across AWS-hosted environments.

Cat Digital, Caterpillar’s digital arm, builds industry-leading solutions for connected assets using data and AI. This Senior Software Engineer designs scalable cloud-native backend services on AWS using Java and Spring Boot. The role involves technical leadership, mentoring, and collaborating across teams to drive engineering excellence.

Recurly’s Software Infrastructure team builds core application services to enable global subscription platform scaling. This role involves defining next-generation platform services and implementing features in Golang applications within a hybrid Broomfield, Colorado office.

LG Ad Solutions seeks a Software Engineer II, Data Engineer to build and scale terabyte‑scale data pipelines for its DSP/SSP and ACR systems. The role focuses on designing, developing, and deploying robust backend services, creating platform tooling for data governance, quality, and compliance, and troubleshooting distributed data workflows.

NVIDIA's Open Harness Engineering team builds core libraries, evaluation systems, and reusable harness capabilities that make AI agents safer, faster, and easier for developers to trust. As a Senior Software Engineer, you will work hands-on across open-source agent harnesses, sandboxed execution, model-provider infrastructure, and agent benchmarks, turning evaluation evidence into real improvements by diagnosing failures, contributing upstream, and proving quality, reliability, cost, and latency

U.S. Bank seeks a Senior Software Engineer (Data & Application Engineer) to design, build, and maintain scalable software and data solutions that enable commercial banking and treasury management capabilities. Day-to-day work includes developing data pipelines, APIs, microservices, and reporting solutions; collaborating with product owners, architects, and platform teams; driving production support and performance tuning; and supporting cloud adoption, automation, and DevOps modernization.

Rocket Lab's Space Systems team in Littleton, CO is seeking a Senior Software Engineer I/II – Simulation Engineering to architect large-scale simulation environments and drive high-level data analysis for complex aerospace challenges. Day-to-day work includes designing distributed simulation campaigns, building data pipelines to process and visualize massive simulation datasets, optimizing HPC and distributed cluster infrastructure, and collaborating with domain experts to translate mission obje

Sierra Space’s Ground Software team builds mission‑critical software for space systems, ensuring national security and space sustainability. The Sr. Software Engineer designs, develops, and tests complex applications, leads code reviews, mentors peers, and makes high‑level design decisions that impact program cost and schedule.

Site Reliability Engineering Center (SRC) at PNC builds and operates reliable, scalable platforms supporting critical banking services. The Software Engineer Lead designs and develops Java/Kubernetes microservices, guides technical solutions, and leads incident response rotations.

Google Cloud Learning Services seeks a Senior Software Engineer, Engineering Productivity to build and improve tools that boost developer efficiency across the team. Day-to-day work includes writing and testing product code, leading design reviews, reviewing peers' code, maintaining documentation and educational content, and triaging and debugging system issues.