PromotedHiringCafe
Founding Full-stack / Product Engineer
Cupertino, CA, US
$130k-$300k/yr On-SiteFull Time
Help us build a 100× better job search engine. We need a full-stack engineer with great taste, sharp fundamentals, and a track record of shipping polished product on React/Next.js plus a real backend (Firebase, Elasticsearch, Redis, Stripe).
React, Next.js, TypeScript, Firebase, Elasticsearch, Redis, Stripe
2mo
Save
Mark Applied
Hide
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
2mo
Save
Mark Applied
Hide
Senior Application Developer
Aurora, Colorado, United States
$85k-$95k/yr HybridFull Time
2+ YOESenior developer for identity and access management; design, develop, and support secure, multi‑system web apps with identity/authentication integrations.
ASP.NET, NodeJS, MVC, TypeScript, Angular, Vue, React, MySQL, Oracle, MSSQL Server, Java, Python, Ruby, C#
3mo
Save
Mark Applied
Hide
Senior Software Engineer
Minneapolis or Denver or Charlotte
$118k-$155k/yr HybridFull Time
5+ YOE5+ years in software development; strong TypeScript; experience with NodeJS, Golang, or Ruby; experience with Express or Rails; SQL/Postgres; ORMs (Prisma/Sequelize/TypeORM); CI/CD and IaC; strong problem-solving and communication.
Typescript, NodeJS, Golang, Ruby, Express, Ruby on Rails, SQL, PostgreSQL, Prisma, Sequelize, TypeORM, CI/CD, Infrastructure as Code, AI for code generation
2mo
Save
Mark Applied
Hide
Sr. Software Engineer - Mixed Portfolio Foundation
Santa Barbara or Dallas or San Diego or Remote United States or San Francisco or Denver or Atlanta or Chicago or Washington, D.C.
$138k-$173k/yr RemoteFull Time
5+ YOE5+ years of experience building web-based SaaS apps; strong data modeling; proficient with Ruby on Rails, React, MySQL, AWS; agile processes; test-driven development.
Ruby on Rails, React, MySQL, AWS, SOA
2mo
Save
Mark Applied
Hide
Senior. Platform Engineer (OnSite)
Aurora, Colorado, United States
$87k-$165k/yr OnsiteFull Time
5+ YOEBS/BA in STEM with 5+ years of related experience; strong Kubernetes/Docker, Python/Java/Ruby/Bash/C/C++, RedHat Linux; TS/SCI/CI Poly clearance; onsite in Aurora, CO; DoD IAT II preferred.
Kubernetes, Docker, Python, Java, Ruby, Bash, C++, C#, Go, RedHat Linux, Jira, Confluence, Bitbucket, Jenkins, Artifactory, Gitlab, Terraform, Ansible, Chef
3w
Save
Mark Applied
Hide
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
Save
Mark Applied
Hide
Senior Software Engineer II of Trading
New York City or Denver or San Francisco
$174k-$210k/yr HybridFull Time
5+ YOE5–8 years software engineering; 5+ years in compiled languages (TypeScript, C#, Java); 2+ years scripting (Python, JavaScript, Ruby); real-time data processing; strong SQL (PostgreSQL/MySQL); CI/CD; cloud platforms (AWS/Azure/GCP); Private Markets/Financial Services experience.
TypeScript, C#, Java, Python, JavaScript, Ruby, WebSockets, Kafka, PostgreSQL, MySQL, CI/CD, Git, GitHub, JIRA, AWS, Azure, GCP
1w
Save
Mark Applied
Hide
Senior DevOps ServiceNow Developer
Aurora, Colorado, United States
$115k-$190k/yr OnsiteFull Time
5+ YOE5+ years software development, ServiceNow development, Service Catalog/workflow experience, proficiency in scripting (Ruby, Python, Perl, Bash, JavaScript), DoD 8570 IAT Level II certification required or obtainable, active TS/SCI with polygraph.
ServiceNow, Ruby, Python, Perl, Bash, JavaScript
1mo
Save
Mark Applied
Hide
Staff Software Engineer, Developer Productivity Async
Denver or San Francisco or New York or Los Angeles or Seattle or Toronto
$189k-$250k/yr HybridFull Time
10+ YOE10+ years software development; strong Ruby on Rails; experience with asynchronous processing (Sidekiq/Kafka); tooling for large engineering teams; AI-enabled productivity improvements.
Ruby, Rails, Sidekiq, Kafka, LLMs, AI tools
2mo
Save
Mark Applied
Hide
Software Development Engineer
Denver, Colorado, United States
$80k-$120k/yr OnsiteFull Time
5+ YOEBachelor's degree or equivalent,5+ years C++ development (C++11/14/17),experience with databases,3D modeling,Visual Studio,CI tools;Ruby/Python and lighting knowledge preferred.
C++, C++11, C++14, C++17, Visual Studio, Ruby, Python, Azure DevOps, Gitlab
3d
Save
Mark Applied
Hide
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
2w
Save
Mark Applied
Hide
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
4w
Save
Mark Applied
Hide
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
Save
Mark Applied
Hide
Senior ML Engineer
Denver or United States
$180k-$200k/yr HybridFull Time
6+ YOE6+ years engineering experience with 3+ years in ML platform/ML Ops or applied ML; strong LLM and Python skills; Ruby on Rails familiarity; cloud-native (AWS), containers, IaC expertise; on-call experience and strong communication.
Claude Code, Python, Ruby on Rails, AWS, Containers, Infrastructure as Code (IaC), LLM
4w
Save
Mark Applied
Hide
Staff Software Engineer
San Francisco or Denver or Nashville or Santiago
$190k-$264k/yr HybridFull Time
10+ YOE10+ years software development experience, 3+ years project leadership; backend expertise (Ruby, Node.js), frontend familiarity (JavaScript, React); experience building scalable systems with automated testing and observability; strong communication and mentoring skills.
Ruby, Node.js, JavaScript, React
1mo
Save
Mark Applied
Hide
Senior DevOps Engineer
Aurora, Colorado, United States
$250k-$276k/yr OnsiteFull Time
5+ YOESenior DevOps engineer with 5+ years in platform infrastructure, Kubernetes, CI/CD, and security integration.
Kubernetes, RKE2, Python, Java, Ruby, Bash, C++, C#, Go, Red Hat Linux, Apache Kafka, Jira, Confluence, Bitbucket, Jenkins, Artifactory, Gitlab, Terraform, Ansible, Chef, DevSecOps, CI/CD
1w
Save
Mark Applied
Hide
Senior DevOps Engineer, Security
United States or San Francisco or Portland or Seattle or Denver or New York City
$150k-$195k/yr RemoteFull Time
3+ YOE3+ years container production experience, 5 years AWS with IaC and security, proficiency with Docker and container orchestration, familiarity with NGINX, at least one language (Python, Go, Ruby), monitoring tools, CI/CD and security/compliance experience.
AWS, Docker, Kubernetes, ECS, NGINX, Python, Go, Ruby, Datadog, NewRelic, CloudWatch
1mo
Save
Mark Applied
Hide
Engineer Senior - Digital Test Developer
Westminster, Colorado, United States
$97k-$165k/yr OnsiteFull Time
4+ YOEBachelors in engineering (or related) + 4+ years experience; experience in full-stack web/desktop apps, back-end and front-end development, CI/CD and testing; Python and Ruby proficiency; eligible for Top Secret/SCI; U.S. person required.
Python, Ruby, Ruby on Rails, Knockout, Vue, NodeJS, JavaScript, Keycloak, Redis, Traefix, Minio, OpenC3 COSMOS, LabVIEW, Veristand, Linux, Windows, BASH, PowerShell, Docker, Podman, CI/CD, NoSQL, FPGA, VHDL, UART, GPIB, DAQmx, RIO, TCP-IP, USB, Spacewire, 1553
2mo
Save
Mark Applied
Hide
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
2mo
Save
Mark Applied
Hide
Sr. System Development Engineer, AL/ML/Storage server team
Cupertino or Seattle or Denver
$151k-$235k/yr OnsiteFull Time
6+ YOE6+ years of software development, systems design, and operations experience; Linux/Unix; leadership in building reliable, scalable software solutions.
Python, C/C++, Linux, Java, Golang, PowerShell, Ruby, CI/CD, OS internals, driver development, PCIe, NVMe, GPU, ARM, x86, BMC/IPMI
Explore Jobs
Expand Your Job Search
Top Cities Near Castle Rock for Senior Ruby Developer
- Senior Ruby Developer jobs in Denver, CO
- Senior Ruby Developer jobs in Colorado Springs, CO
- Senior Ruby Developer jobs in Aurora, CO
- Senior Ruby Developer jobs in Lakewood, CO
- Senior Ruby Developer jobs in Thornton, CO
- Senior Ruby Developer jobs in Westminster, CO
- Senior Ruby Developer jobs in Arvada, CO
- Senior Ruby Developer jobs in Centennial, CO
- Senior Ruby Developer jobs in Boulder, CO
- Senior Ruby Developer jobs in Broomfield, CO
- Senior Ruby Developer jobs in Commerce City, CO
- Senior Ruby Developer jobs in Parker, CO
- Senior Ruby Developer jobs in Littleton, CO
- Senior Ruby Developer jobs in Northglenn, CO
- Senior Ruby Developer jobs in Brighton, CO
- Senior Ruby Developer jobs in Englewood, CO
- Senior Ruby Developer jobs in Wheat Ridge, CO
- Senior Ruby Developer jobs in Fountain, CO
- Senior Ruby Developer jobs in Lafayette, CO
- Senior Ruby Developer jobs in Erie, CO