Backend Developer Jobs in Colorado, United States

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.

CACI is seeking a Senior Backend Software Developer for the GEOINT Tradecraft Suite (GTS), a mission-critical platform delivering advanced geospatial intelligence capabilities to national security users. In this role, you will design and develop scalable backend services that support mission applications, data processing, search, and integration across the GTS platform.

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.

Quindar builds cloud-native satellite mission operations software to operate satellites like servers, replacing fragmented legacy ground systems with an integrated, automation-driven platform. As a Backend Engineer, you will develop ground satellite operations software using Python and AWS services, design and integrate APIs, and optimize scalability, security, cost, and performance across containerized and Kubernetes-based deployments.

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.

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.

Mission Operations Services (MOS) team at Loft Orbital builds backend services that enable operators to command, monitor, and automate satellite fleets via the Cockpit mission control system. The role designs, implements, and maintains Python microservices for passes, autopilots, and day‑to‑day satellite operations, collaborating with flight software, embedded, and test teams.

LG Ad Solutions seeks a Backend Software Engineer to join its Identification Engineering team in Denver. The role focuses on designing, building, and optimizing high‑performance distributed systems that process petabytes of data daily.

Launchpad team at Worldpay builds the merchant onboarding platform that streamlines payment acceptance and settlement. The Senior Backend Software Engineer designs, develops and maintains Java‑based RESTful APIs and event‑driven services, collaborates with architects, writes clean testable code, and mentors teammates in an Agile environment.

Worldpay, a global fintech leader, builds innovative payment solutions that power the world economy. As a Senior Software Engineer on the core development team, you will design, program, debug, and enhance backend .Net applications, collaborate with product managers and clients to define requirements, and participate in technical design meetings.

Quindar builds cloud-native satellite mission operations software with the mission to operate satellites like servers, replacing fragmented legacy ground systems with an integrated, automation-driven platform. As a Backend Engineer, you will develop ground satellite operations software using Python and AWS services, design and integrate APIs, and work across backend development, generative AI integrations, DevSecOps/CI-CD tooling, and software architecture.

The Security Products Console team at Fastly owns the public-facing interface for configuring Next-Gen WAF, DDoS protection, and Bot Management. As a Senior Backend Software Engineer (APIs), you will design, ship, and own public-facing APIs and backend services in Go, from technical proposal and design docs through implementation, testing, production rollout, and on-call support.

Leidos is hiring a Mid-Level Backend Software Engineer to build and maintain core backend services for a high-visibility, data-driven analytics and reporting application used across the organization. Day-to-day work includes designing and developing backend components in Java or Python, building RESTful APIs, applying object-oriented design, writing SQL queries, collaborating on data source integration, and troubleshooting within Linux-based environments to support system reliability, performanc

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.

Backend Solutions Architect - Remote Bright Vision Technologies is a technology consulting and software development company delivering cloud, AI, data, and enterprise solutions across the United States. This is a fantastic opportunity to join an established and well-respected organization offering tremendous career growth potential.

We’re building a world of health around every individual — shaping a more connected, convenient and compassionate health experience. At CVS Health®, you’ll be surrounded by passionate colleagues who care deeply, innovate with purpose, hold ourselves accountable and prioritize safety and quality in everything we do.

Bright Vision Technologies is a forward-thinking software development company dedicated to building innovative solutions that help businesses automate and optimize their operations. We leverage cutting-edge technologies to create scalable, secure, and user-friendly applications.

Career Area: Technology, Digital and Data Job Description: Your Work Shapes the World at Caterpillar Inc. When you join Caterpillar, you're joining a global team who cares not just about the work we do – but also about each other. We are the makers, problem solvers, and future world builders who are creating stronger, more sustainable communities.

Scribd, Inc. is on a mission to advance human understanding. Our four products — Scribd®, Slideshare®, Everand™, and Fable — help billions of people across the globe move beyond access and into insight, application, and expertise.

The Opportunity: Today’s dynamic technology landscape demands constant and rapid innovation. To facilitate this transformation, we must ensure continuous integration and application develop ment.