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148 software tool engineer jobs at 85 companies in Longmont, CO

1mo
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Software Engineer
United States or Boston or New York City or Denver
$110k-$125k/yr RemoteFull Time
Spoiler Alert
Spoiler Alert: SaaS platform for managing and liquidating surplus food inventory.
2+ YOE2+ years professional software engineering experience; full‑stack web development using TypeScript, React, Express, and MongoDB; strong testing, collaboration, and productive use of AI coding tools.
TypeScript, React, Express, MongoDB
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1mo
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Software Engineer III
Lone Tree or Englewood
$108k-$149k/yr HybridFull Time
Sierra Nevada Corporation
Sierra Nevada Corporation: Develops mission-critical aerospace and national security technology systems.
6+ YOEBachelor's in CS or related, 6+ years software development, advanced proficiency in C++, Java, or Python, engineering principles, agentic coding tools, and experience on multi-disciplinary teams.
C++, Java, Python, C, C#, HTML, Bash, agentic coding tools
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2mo
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Software Engineer, Infrastructure/Developer Tooling (Hybrid)
Toronto or Denver
$109k-$128k/yr HybridFull Time
Homebase
Homebase: Provides scheduling, payroll, and HR software for hourly teams.
3+ YOE3+ years of software or infrastructure engineering; experience with internal tooling, cloud (AWS) and CI/CD; frontend/backend versatility; strong developer experience focus.
Ruby, Golang, Terraform, AWS, CI/CD, Observability, Infrastructure as Code, Containerization
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2mo
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Senior Software Engineer
Denver or Salem
$130k-$150k/yr OnsiteFull Time
AutoStore
AutoStoreOslo Stock Exchange: AUTO: Robotic cube storage systems for automated warehouse fulfillment.
5+ YOE5+ years in software development; Bachelor’s or Master’s in CS/Engineering; strong API, security, and data tooling experience.
Git, OpenAPI, OAuth, RabbitMQ, Apache Kafka, Azure Service Bus, Event Hubs, Azure Databricks, TypeScript, C#, F#, PostgreSQL
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3w
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Staff Software Engineer
Broomfield, Colorado, United States
$145k-$185k/yr HybridFull Time
Recurly
Recurly: Automates subscription billing and management for recurring revenue businesses.
10+ YOE10+ years full‑stack software engineering experience; deep Ruby on Rails and Vue.js expertise; API and MySQL proficiency; proven technical leadership and mentoring; experience with AI-assisted development tools.
Ruby on Rails, ActiveRecord, Vue.js, MySQL, GitHub Copilot, Cursor, Claude Code, Go (Golang), Node.js, Anthropic, OpenAI, AWS, OpenSearch, Redis, Kafka, Docker, CI/CD
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1w
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Software Engineer
Colorado Springs or Irvine or Longmont or Fremont or Rochester or San Jose
$111k-$148k/yr OnsiteFull Time
Western Digital
Western DigitalNASDAQ: WDC: Design and manufacture data storage devices and systems.
0+ YOEPursuing or recent Bachelor's/Master's in a technical field; experience with C/C++, Python, Java, Go, SQL, or JavaScript through coursework or internships; familiarity with software fundamentals, debugging, and development tools.
C, C++, Python, Java, Go (Golang), SQL, JavaScript, Microsoft Office, Git, Linux, IDEs
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3mo
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Principal Software Engineer
Boulder or New York City
$200k-$240k/yr HybridFull Time
Sovrn
Sovrn: Provides software and data tools for digital publishers to monetize.
10+ YOE10+ years software engineering; 5+ years adtech infrastructure; backend focus; experience with AI tooling; distributed systems; OpenRTB knowledge.
Java, Kafka, Redpanda, AWS, Databricks, Datadog, ONYX
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1mo
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Senior Software Engineer
Highlands Ranch or Houston
$93k-$186k/yr OnsiteFull Time
Lockheed Martin
Lockheed MartinNYSE: LMT: Designs and manufactures global security and aerospace systems.
Experience with Python and C++, JIRA, Confluence, and Perforce; perform software configuration management and development tool administration; strong team collaboration and communication skills.
Python, C++, JIRA, Confluence, Perforce, DXL
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2mo
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Senior Software Engineer - Data Path
Louisville or Houston
OnsiteFull Time
Pivot3
Pivot3: Provides hyperconverged infrastructure for video surveillance and data workloads.
4+ YOE4-8 years software engineering experience; strong C/C++; knowledge of storage protocols; CI tools; VMware; Agile; Linux networking.
C/C++, Jenkins, VMware, Linux, IP networking
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2mo
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Software Engineer II
Atlanta or Austin or Boston or Chicago or Denver or New York City or United States
$115k-$188k/yr RemoteFull Time
Iterable
Iterable: AI-powered customer engagement and cross-channel marketing automation platform.
Strong software engineering fundamentals in Scala/Java/Kotlin or similar; experience with build systems and CI; diagnose complex build/test issues; collaborate across teams; comfortable using AI tools.
Bazel, SBT, Maven, Gradle, GitHub Actions, Cursor, Claude
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2mo
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Staff Software Engineer
Columbus or Austin or Denver
HybridFull Time
Lower
Lower: Provides digital mortgage lending and homeownership financial services.
8+ YOE8+ years in software engineering; full-stack with backend/frontend; TypeScript, React, AWS, Next.js, Node.js, PostgreSQL; AI-assisted tooling experience; strong CS fundamentals; fintech/lending experience a plus.
TypeScript, React, AWS, Next.js, Node.js, PostgreSQL, Cursor, Claude Code, Codex, GitHub Copilot
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3d
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Associate Director, Software Engineer
Los Angeles or Denver or Orlando or Atlanta or Montvale
$153k-$297k/yr OnsiteFull Time
KPMG
KPMG: Global professional services network providing audit, tax, and advisory.
8+ YOE5+ Mgmt8+ years software engineering experience with 5+ years technical lead experience; bachelor\u0002s required; proficiency in Python, Go, C++, JavaScript; cloud, containerization, CI/CD, and AI-assisted tooling experience required.
Python, Go, C++, JavaScript, SQL, NoSQL, AWS, Azure, Docker, Kubernetes, GitHub Actions, Jenkins
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2d
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Engineer I - Software
Boulder or Broomfield or Westminster
$65k-$110k/yr OnsiteFull Time
BAE Systems
BAE SystemsLondon Stock Exchange: BA: Provides advanced defense, aerospace, and security technology solutions.
BS in engineering or related required; experience with satellite ground systems, ground-system tools, cloud, web services, and back-end/front-end languages; eligible for Top Secret/SCI clearance.
COSMOS, ECLIPSE, OS/COMET, OASIS, AWS, Lambda, Docker, Kubernetes, Spring, Jersey, Flask, CherryPy, Ruby on Rails, JavaScript, Angular, React, JavaFX, Python, Qt, SQL, NoSQL, JPA/ORM, Java, C++, Rust, Ada
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3w
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Advanced Software Systems Engineer
Boulder, Colorado, United States
$119k-$128k/yr HybridFull Time
General Dynamics Mission Systems
General Dynamics Mission SystemsNYSE: GD: Engineers secure communication and mission-critical defense technology systems.
3+ YOEBachelor's in systems engineering (or related) with 5+ years or Master's with 3+ years, DoD Secret clearance required, U.S. citizenship, experience with systems-level software development, MBSE, cloud and DevOps tooling.
Model-Based Systems Engineering (MBSE), AWS, Azure, RHOSP, VIO, Kubernetes, Rancher, Docker, OpenShift, Ansible, Terraform, Terragrunt, Packer, STIG, RMF
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2mo
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Staff Software Engineer, LowerOS
Columbus or Austin or Denver
HybridFull Time
Lower
Lower: Digital mortgage lending and comprehensive homeownership fintech services
8+ YOE8+ years in software engineering; full-stack expertise; TypeScript/React/AWS/Next.js/Node.js/Postgres; AI-assisted tooling experience; strong CS foundations.
TypeScript, React, AWS, Next.js, Node.js, Postgres, Cursor, Claude Code, Codex, GitHub Copilot
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20h
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Staff Software Engineer, Tax Accounts
Denver or San Francisco or New York City or San Jose or Scottsdale
$163k-$247k/yr HybridFull Time
Gusto
Gusto: Cloud-based payroll and HR software for small businesses.
8+ YOE8+ years software development experience; ownership of large projects; designing data models and APIs for rules-heavy domains; experience with AI tools and mentoring engineers; interest in Ruby on Rails.
Ruby on Rails
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3w
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Senior Software Engineer
Denver, Colorado, United States
$130k-$150k/yr HybridFull Time
OrthoFi
OrthoFi: Software for orthodontic practice operations and patient financing.
10+ YOE10+ years software development experience, 4+ years in senior roles. Strong .NET Core/.NET Framework, React/Angular, SQL Server, AWS, CI/CD experience; Bachelor's in STEM required; experience with AI coding tools preferred.
.NET Core, .NET Framework, React, Angular, SQL Server, AWS, CI/CD, Terraform, Datadog, GraphQL, ElasticSearch, Claude, GitHub Copilot, Cursor, Playwright, Model Context Protocols (MCP)
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1mo
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Principal Engineer-Software
Englewood, Colorado, United States
$172k/yr OnsiteFull Time
EchoStar
EchoStarNasdaq: SATS: Global provider of satellite solutions and wireless communications services.
6+ YOEBachelor's in Computer/Mechanical Engineering or related and 6+ years experience; 3+ years with scripting/programming, automation frameworks, load testing, and defect tracking; experience with EM/monitoring tools and CI/CD.
Javascript, Typescript, Java, Python, WebdriverIO, Selenium, Appium, Jmeter, Load Runner, Jira, New relic, Dynatrace, Splunk
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1mo
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Software Engineer I - Ground Software
Greenwood Village or Austin or Laurel
$70k-$125k/yr HybridFull Time
York Space Systems
York Space SystemsNYSE: YSS: Designs and manufactures modular spacecraft platforms and mission solutions.
0+ YOEEarly‑career full‑stack engineer; 0–1 years experience; bachelor's (or pursuing) in CS or related; foundational React/Angular knowledge; familiarity with TypeScript, C#, REST, Git, SQL, front-end tools; ability to obtain security clearance.
React, TypeScript, C#, .NET, Docker, Kafka, REST, Yarn, Babel, Material-UI, Git, SQL, TanStack Query
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1mo
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Software Engineer III
Denver or Nashua or Augusta or Pinellas Park or Madison Heights
$125k-$145k/yr HybridFull Time
WOW!
WOW!: Provides broadband internet, cable television, and digital phone services.
3+ YOEFull-stack engineer with 3+ years building scalable web applications using Next.js and Node.js, strong AWS experience, REST/GraphQL APIs, serverless, CI/CD, AI-assisted tooling, and familiarity with web performance and accessibility standards.
Next.js, Node.js, REST API, GraphQL, Serverless, AWS, EC2, Lambda, S3, CloudFront, API Gateway, ECS, EKS, WAF, IAM, GitHub Copilot, Cursor, Claude, Contentful, Optimizely, LaunchDarkly, Google Analytics 4 (GA4), CI/CD
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