Backend Developer Jobs in Colorado, United States

Enterprise Health Platform team at Judi Health builds scalable cloud solutions for pharmacy benefit management. The Senior Backend Developer leads high‑impact API integrations and data migrations, designs serverless Python services on AWS, and collaborates with product managers and major clients to ensure security and reliability.

Technology team at Judi Health builds scalable healthcare platforms to improve patient experiences. The Senior Backend Software Developer leads feature design through delivery, partners with product and design, and expands the enterprise health platform using Python, Flask, SQLAlchemy, PostgreSQL, and AWS services.

OneRTX Process & Systems Transformation Program at RTX builds a unified ERP platform using SAP S/4HANA. The SAP S/4 ABAP Backend Developer designs, develops, documents and supports ABAP applications, contributes to migration of ECC systems, and establishes enterprise-wide development standards.

RAPTR platform team at LMI builds a Modeling, Simulation, Prototyping, Wargaming, & Analysis platform for complex space domain studies. The Senior Backend Software Developer designs and implements scalable APIs, data pipelines, and services that enable analysts and data scientists to run high‑volume simulations.

In-Depth Engineering Corporation's Backend team supports the CommandIQ program, building scalable backend services for mission-critical applications. Engineers design, implement, and test features in Rust or Java, containerize workloads with Docker, and manage services via gRPC and Kubernetes.

Vorto is on a mission to improve America’s supply chain efficiency and sustainability using AI. As a Backend Engineer you will design, build and operate high‑volume services, embed AI/LLMs to automate decision‑making, and own end‑to‑end problem solving. Based in Denver, CO with an on‑site work model, you’ll join a fast‑paced, mission‑focused squad delivering world‑class logistics systems.

Quindar builds cloud-native satellite mission operations software, delivering automated, scalable ground systems for space missions. As a Backend Engineer you will develop Python APIs, integrate AWS services, and contribute to generative AI platform integrations while collaborating in an Agile Scrum team.

Space Communications team at Sphinx Defense builds a modern, scalable ground communications and data-transport platform for US government satellites. The Backend Engineer leads development of core platform services, designs and builds secure, automated APIs, and mentors junior engineers while owning problems end‑to‑end.

Loft Orbital seeks a Backend Engineer for its Data Management Services team to design, build, and maintain microservices and data pipelines that ingest, process, and deliver satellite payload data from ground stations to customers. The role involves Python development, Docker, API design, database work, and collaboration with cross‑functional teams, with opportunities to participate in SatDevOps rotations and spacecraft operations.

Oort team at Loft Orbital builds a unified web platform that centralizes infrastructure data and tools across the entire mission lifecycle. The Backend Engineer designs, implements, and operates APIs and services that collect, manage, and surface critical mission data, collaborating with program management, satellite engineering, and operations to streamline complex workflows.

DAT Backend Services team builds and scales the core SaaS platform that powers millions of freight transactions. The Staff Backend Software Engineer leads design and delivery of high‑performance Node.js microservices, drives AWS cloud architecture, and mentors engineers while handling incident response.

Leidos’ Backend Engineering team builds mission‑driven systems that power a high‑visibility application for data analysis and operational decision‑making. The role designs and develops scalable Java or Python services, implements RESTful APIs, and optimizes SQL queries in a Linux environment.

Space Communications team at Sphinx Defense builds modern, scalable mission planning and command and control software for US government satellites. The Senior Backend Engineer leads development of core platform services, designs multi-tenant cloud APIs, and mentors junior engineers while collaborating with customers to integrate solutions.

Xumo, a joint venture between Comcast and Charter Communications, develops a next‑generation streaming platform. Seeking a Senior Backend Engineer to lead design, development, and integration of backend systems for video streaming services, ensuring scalable, reliable delivery of content to millions of viewers.

At Northrop Grumman, our employees have incredible opportunities to work on revolutionary systems that impact people's lives around the world today, and for generations to come. Our pioneering and inventive spirit has enabled us to be at the forefront of many technological advancements in our nation's history - from the first flight across the Atlantic Ocean, to stealth bombers, to landing on the moon.

Content Foundations team builds the systems that power how content enters, evolves, and is delivered across Scribd, handling ingestion, metadata extraction, and core artifacts for search, recommendations, and AI/ML. The senior engineer will lead design and scaling of ingestion pipelines, metadata services, and processing workflows, collaborate with security, ML, and discovery teams, and mentor across squads.

Backend Services team at CACI builds scalable, reliable cloud services for critical government missions. The Senior Backend Engineer designs and implements Java and Python microservices on AWS, creates CI/CD pipelines, and containerizes applications with Docker and Kubernetes.

Application Team at Windfall, building the system that ingests and processes customer data, the core of all customer interactions. The Backend Engineer designs and implements scalable distributed services, collaborates with product, frontend, and data teams, and models complex data for segmentation and enrichment.

Semgrep backend team builds fast, reliable infrastructure and APIs that power Semgrep’s code security products at scale. The Senior Backend Engineer designs, builds and maintains backend services, optimizes databases and distributed systems, and integrates third‑party vendors while collaborating with cross‑functional engineers.