2mo
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Senior Backend Engineer (Ruby on Rails/Python) - Content Foundations
San Francisco or Atlanta or Austin or Boston or Chicago or Dallas or Denver or Houston or Jacksonville or Los Angeles or Miami or New York City or Phoenix or Portland or Sacramento or Salt Lake City or San Diego or Seattle or Washington, D.C. or Ottawa or Toronto or Vancouver or Mexico City
$120k-$217k/yr HybridFull Time
7+ YOE7+ years software engineering; experience with ingestion pipelines, ETL, and content processing; proficient in Ruby, Python, or Go; AWS and distributed workflows; strong DB design; effective communicator.
Ruby, Python, Go, AWS, SQL, NoSQL, ETL, LLM
1mo
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Senior Software Engineer, TypeScript / Node.js
Charlotte or Fort Mill or Denver or Minneapolis or United States
$118k-$155k/yr HybridFull Time
5+ YOEBachelor's degree or equivalent experience; 5+ years software development; 5+ years with Typescript and OOP languages (NodeJS, Golang, Ruby); 3+ years with backend frameworks (Express, Ruby-on-Rails), SQL/Postgres, ORMs (Prisma, Sequelize, TypeORM), CI/CD and IaC; software testing and AI-assisted code generation experience.
Typescript, NodeJS, Golang, Ruby, Express, Ruby-on-Rails, SQL, Postgres, Prisma, Sequelize, TypeORM, CI/CD, Infrastructure as code (IaC), Node.js, REST APIs, NoSQL
5d
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Staff Software Engineer, HR Experiences
Denver or San Francisco or New York City
$199k-$247k/yr HybridFull Time
8+ YOE8+ years software development experience; experience with Ruby on Rails, JavaScript/React; building AI agents; mentoring engineers; compliance-domain experience preferred.
Ruby on Rails, JavaScript, React, Claude Code, Codex
2w
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Space Vehicle Test Engineer Sr
Littleton, Colorado, United States
$89k-$158k/yr OnsiteFull Time
Bachelor's in engineering or related experience, prior test experience, proficiency with scripting (Python/PHP/Ruby), TS/SCI clearance, strong technical writing and communication skills.
Python, PHP, Ruby
1w
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Amazon Dedicated Cloud Engineer, Region Reliability Engineering
Denver, Colorado, United States
OnsiteFull Time
3+ YOEActive TS/SCI with polygraph required, associate degree or relevant cert, 3+ years systems administration, networking and troubleshooting experience, scripting (Python/Ruby/Perl) experience.
Amazon Bedrock, Python, Ruby, Perl
1w
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Engineer I - Test Systems
Westminster, Colorado, United States
OnsiteFull Time
BS in engineering or related field, electronics test and troubleshooting experience, Python or Ruby scripting, circuit and board-level test knowledge, and willingness to obtain Top Secret/SCI clearance.
Python, Ruby, MATLAB, LabVIEW, DOORS
5d
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Engineer I - Space Vehicle Simulators
Boulder, Colorado, United States
OnsiteFull Time
BS in engineering or related field required; experience with Matlab/Simulink, C/C++, Ruby or Python, Linux/VxWorks, GitLab; eligible for Top Secret/SCI and U.S. citizenship required.
GitLab, Matlab/Simulink, Simulink Coder, Embedded Coder, Matlab Coder, C, C++, Ruby, Python, Linux, VxWorks
2d
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Engineer I – Focal Plane Electronics Systems
Boulder, Colorado, United States
$65k-$110k/yr OnsiteFull Time
BS in engineering or related field, FPGA and digital logic experience, oscilloscope/logic analyzer lab skills, programming in Python/Ruby/MATLAB, eligible for Top Secret/SCI polygraph.
oscilloscope, logic analyzer, protocol analyzer, Xilinx, Altera, VHDL, Verilog, SystemVerilog, Python, Ruby, MATLAB
2mo
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Senior Spacecraft Operations Engineer II
Littleton, Colorado, United States
$123k-$164k/yr OnsiteFull Time
8+ YOEBachelor's in engineering,8+ years in space mission design/spacecraft operations,knowledge of spacecraft subsystems,software development experience (Python/Ruby/C/C++),U.S. citizenship required.
Python, Ruby, C, C++, GIT, CI/CD, flatsat, HITL
3d
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Senior Backend Engineer
Denver, Colorado, United States
$160k-$180k/yr OnsiteFull Time
4+ YOE4+ years backend web development experience; strong Ruby and Rails knowledge; PostgreSQL schema and query optimization; RESTful API design; Git; secure coding and strong problem-solving.
Rails, Hotwire, PostgreSQL, Ruby, JSON, Git, GoodJob, Sidekiq, AWS, Heroku
2mo
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Principal Engineer
Denver, Colorado, United States
$180k-$200k/yr HybridFull Time
10+ YOE10+ years in technical leadership; BA/BS in Computer Science; Ruby/Rails, TypeScript/React, Go, Python; AI-native workflow experience; agentic apps; scaling complex products.
Ruby, Rails, TypeScript, React, Go, Python, AI tooling
3w
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Staff Software Engineer
Broomfield, Colorado, United States
$145k-$185k/yr HybridFull Time
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
1w
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Software Developer - InfoTrack Exchange, ServeManager
Denver, Colorado, United States
$75k-$135k/yr HybridFull Time
5+ YOE5+ years Ruby on Rails and full-stack web development, 5+ years JavaScript and PostgreSQL experience, experience with AI coding assistants and agentic workflows, strong QA/testing and communication skills.
Ruby on Rails, JavaScript, Stimulus, Turbo, PostgreSQL, Claude Code, Cursor, Copilot, Stripe, Maxio, RESTful API
1mo
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Sr. Software Engineer - Owner/Investor
Santa Barbara or Dallas or San Diego or San Francisco or Denver or Atlanta or Chicago or Washington
$138k-$173k/yr HybridFull Time
5+ YOE5+ years building and scaling web applications; full‑stack experience with Ruby on Rails, React, MySQL, AWS, SOA; strong TDD and Agile (Scrum/Kanban) experience; BS/MS in CS preferred.
Ruby on Rails, React, MySQL, AWS, SOA, Test-Driven-Development, Agile, Scrum, Kanban
1mo
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Los Angeles Based Graduate Intern - Building Energy Modeling and Analysis
Los Angeles or Golden or Boulder or Washington or United States
$45k-$71k/yr HybridFull Time, Internship
Graduate-student or recent-graduate internship requiring building energy modeling and simulation experience, proficiency with EnergyPlus/OpenStudio/Modelica, programming (Python, MATLAB, Ruby), GitHub, GPA ≥ 3.0, and residence in California for the internship.
EnergyPlus, OpenStudio, Modelica, Python, MATLAB, Ruby, GitHub
3w
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Principal Guidance Navigation and Control Engineer
Boulder, Colorado, United States
$170k-$260k/yr OnsiteFull Time
13+ YOEBS in engineering required; ~13+ years related experience preferred. Experience with GN&C, orbital mechanics, MATLAB/Simulink, 6-DOF simulation, C and Ruby, model-based design, and configuration/issue tracking.
MATLAB, Simulink, C, Ruby
1mo
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Senior Fullstack Engineer (Freelance)
Paris or Montpellier or London or Denver
€520/day RemoteContract
5+ YOE5+ years shipping full-stack product; fluent in React/TypeScript; strong backend foundations (relational DBs, distributed systems, observability, security); Ruby on Rails a plus; strong testing, ownership, and communication skills.
GraphQL, React, TypeScript, Ruby on Rails, CI/CD
1mo
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Staff Software Engineer
Santiago or Denver or San Francisco or Nashville
$66496k-$78230k/yr HybridFull Time
10+ YOE10+ years software development, 3+ years project leadership, backend expertise (Ruby, Node.js), frontend proficiency (JavaScript, React), bachelor’s or equivalent, fluent English, hybrid availability in Santiago (3 days/week).
Ruby, Node.js, JavaScript, React
1mo
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Spacecraft Operations Engineer I/II
Littleton, Colorado, United States
$82k-$118k/yr OnsiteFull Time
2+ YOEBachelor's in engineering, spacecraft/ground-systems experience, software development (Python/Ruby/C/C++), understanding of spacecraft subsystems and orbital mechanics, U.S. citizenship required; Engineer II prefers 2+ years experience.
Python, Ruby, C, C++, GIT, CI/CD, cloud infrastructure, flatsat, HITL, HIL
1mo
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DAF Support Engineer
Longmont, Colorado, United States
$71k-$105k/yr OnsiteFull Time
U.S. citizen with active Secret clearance, ability to support 24/7 rotational shifts, bachelor’s in engineering/CS or 4 yrs experience, background in Windows/Unix/Linux, scripting (Python or Ruby), and strong communication skills.
Windows, Unix/Linux, Python, Ruby, XML, JSON
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