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Founding Full Stack Engineer Jobs in Denver, CO (NOW HIRING)

RADICL Defense

Senior Full Stack Engineer

Boulder, CO · On-site

As an early member, you will work closely alongside an experienced founding team and realize the ... As a RADICL Senior Full Stack Engineer, you will: * Full-stack ownership - build end-to-end ...

Radicl Defense

Senior Full Stack Engineer

Boulder, CO · On-site

$140K - $185K/yr

As an early member, you will work closely alongside an experienced founding team and realize the ... As a RADICL Senior Full Stack Engineer, you will: * Full-stack ownership - build end-to-end ...

Cervin

Senior Full Stack Engineer

Boulder, CO · On-site

As an early member, you will work closely alongside an experienced founding team and realize the ... As a RADICL Senior Full Stack Engineer, you will: * Full-stack ownership -- build end-to-end ...

Revolutional, LLC

Full Stack Engineer

Denver, CO · Remote

$110/hr

Full Stack Engineer Location: Remote Terms: Full-time Salary Range: $110-160k DOE Clearance: Qualified candidates must be US citizens and able to obtain a minimum of a Public Trust clearance Travel ...

Placed

Senior Full Stack Engineer

Englewood, CO · Hybrid

$55/hr

Our valued client in Englewood, CO are seeking a Senior Full Stack Engineer for their team. This is a six-month contract with the possibility of extension or conversion to full-time. This is a hybrid ...

Quindar

Full Stack Engineer

Denver, CO · On-site

$120K - $180K/yr

About the Role Quindar is hiring a Full Stack Engineer to develop ground satellite operations software using Python, AWS, and modern web technologies. In this role, you will support mission-unique ...

Clerkie

Full-Stack Engineer

Denver, CO · Remote

$90/hr

About the role We're looking for a Full-Stack engineer who wants to build, own, and ship end-to-end product experiences in a fast-moving environment. This role is ideal for someone who is comfortable ...

PlanIT Group, LLC

Full Stack Engineer

Littleton, CO · On-site

PlanIT Group, LLC is seeking a Full Stack Engineer to support their Space IT Applications team in a classified IT operations environment. The role involves participating in the entire application ...

Apex Systems

Full Stack Engineer

Greenwood Village, CO · On-site

Full Stack Engineer Location: Greenwood Village, Colorado (Hybrid) Role Overview We are seeking a Lead Full Stack Software Engineer to drive the development of mission-critical mobile platform ...

Revolutional, LLC

Senior Full Stack Engineer

Denver, CO · Remote

$130K - $185K/yr

Senior Full Stack Engineer Location: Remote Terms: Full-time Salary Range: $130K-185k DOE Clearance: Qualified candidates must be US citizens and able to obtain a minimum of a Public Trust clearance ...

Sensor Tower

Full Stack Engineer

Denver, CO · On-site

About this role: We're looking for a Full Stack Developer (main back end focus) to work on our advertising analytics platform. We gather and process BIG amounts of data and deliver meaningful ...

AIR Communities

Lead Full Stack Engineer

Denver, CO · On-site

We are seeking an experienced Lead Full-Stack Engineer to join our dynamic data team. The ideal candidate is skilled in designing and delivering scalable, high-quality applications across modern ...

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Showing results 1-20

All JobsFounding Full Stack Engineer JobsFounding Full Stack Engineer Jobs in Denver, CO

Founding Full Stack Engineer information

See Denver, CO salary details

$45.8K

$138.7K

$196.1K

How much do founding full stack engineer jobs pay per year?

As of Sep 12, 2026, the average yearly pay for founding full stack engineer in Denver, CO is $138,717.00, according to ZipRecruiter salary data. Most workers in this role earn between $114,200.00 and $162,600.00 per year, depending on experience, location, and employer.

What is a founding full stack engineer?

A Founding Full Stack Engineer is an early, core technical team member at a startup who is responsible for building both the front-end and back-end of the company's product. This role goes beyond typical engineering, often involving product decisions, architecture design, and collaborating directly with the founders. Founding Full Stack Engineers help shape the company's culture, technical direction, and can have significant equity stake. Their work is crucial in taking the business from idea to launch, often in a fast-paced, resource-limited environment.

What are the key skills and qualifications needed to thrive as a founding full stack engineer?

To thrive as a Founding Full Stack Engineer, you need expertise in both front-end and back-end development, deep knowledge of programming languages like JavaScript, Python, or Ruby, and experience with scalable architectures, often backed by a degree in computer science or equivalent experience. Familiarity with frameworks (React, Node.js, Django), version control systems (Git), cloud platforms (AWS, GCP), and DevOps practices is typically required. Strong problem-solving, initiative, adaptability, and excellent communication distinguish successful candidates, enabling effective collaboration in a startup environment. These skills and qualities are crucial for building robust products rapidly and influencing the company's technical direction from its early stages.

What unique challenges might a founding full stack engineer face when joining an early-stage startup?

As a Founding Full Stack Engineer at an early-stage startup, you'll often balance building core product features with setting up foundational technical infrastructure. This role typically requires wearing multiple hats, from architecting systems and writing code to making critical technology decisions and collaborating closely with non-technical founders. You may encounter challenges such as ambiguous requirements, shifting priorities, and limited resources, but you'll also have significant influence over the company's technical direction. The dynamic environment encourages rapid learning and offers accelerated career growth, particularly for those who thrive in fast-paced, collaborative settings.

What is the difference between Founding Full Stack Engineer vs Full Stack Engineer?

AspectFounding Full Stack EngineerFull Stack Engineer
CredentialsTypically requires proven full stack development experience, sometimes with startup or early-stage company involvementRequires relevant full stack development skills, often with formal education or certifications
Work EnvironmentEarly-stage startups or founding teams, often wearing multiple hatsEstablished companies or startups, focused on project delivery
Employer & Industry UsageFounding teams, startups, tech entrepreneursTech companies, agencies, startups, corporate IT teams

Founding Full Stack Engineers are key players in early-stage startups, often involved in building core products from scratch and shaping company technology. Full Stack Engineers work across various company sizes, focusing on developing and maintaining applications. The main difference lies in the startup environment and level of involvement in founding the company.

What are popular job titles related to Founding Full Stack Engineer jobs in Denver, CO?

For Founding Full Stack Engineer jobs in Denver, CO, the most frequently searched job titles are:

What job categories do people searching Founding Full Stack Engineer jobs in Denver, CO look for?

The top searched job categories for Founding Full Stack Engineer jobs in Denver, CO are:

What cities near Denver, CO are hiring for Founding Full Stack Engineer jobs?

Cities near Denver, CO with the most Founding Full Stack Engineer job openings:

Founding Full Stack Engineer jobs near you
Infographic showing various Founding Full Stack Engineer job openings in Denver, CO as of September 2026, with employment types broken down into 1% Internship, 85% Full Time, 10% Part Time, and 4% Contract. Highlights an 87% Physical, 4% Hybrid, and 9% Remote job distribution, with an average salary of $138,717 per year, or $66.7 per hour.

Full Stack Engineer

Boulder, CO • On-site

Ridley Technologies, Inc.
See more jobs at Ridley Technologies, Inc.external

Other

Posted 24 days ago

Job description

Ridley is rebuilding the home transaction around the consumer.

Our mission is to eliminate the $100B homeowners lose every year to real estate commissions by replacing a fragmented, intermediary-driven process with AI. We believe software will become the primary interface for buying and selling a home, while human experts are brought in only where they create real value.

Backed by leading investors and with strong early traction, we're building the AI-native platform that will define the next generation of residential real estate.

The Role

We're looking for an exceptional Full Stack Engineer to help build the future of one of the world's largest industries.

You'll work directly with the CEO and founding team to design, build, and scale an AI-native product from the ground up. This isn't a role where you'll own a small corner of a mature codebase, you'll help define the architecture, product, and engineering culture of the company.

AI is central to how we build. We use the latest AI coding tools to move faster, automate repetitive work, and spend more time solving hard product and engineering problems.

What You'll Do
  • Own the design, architecture, and implementation of features across the stack—from frontend to backend to cloud infrastructure.
  • Build fast, intuitive user experiences with React, Next.js, and Tailwind.
  • Develop scalable backend services with Node.js and AWS.
  • Design and operate cloud infrastructure using AWS (CDK, CloudFront, API Gateway, DynamoDB, Lambda, SQS, SNS, Bedrock, S3, EC2, and Fargate).
  • Build AI-native product experiences by integrating frontier language models into core user workflows.
  • Design and implement agentic systems that leverage tool use, memory, retrieval, and orchestration to complete complex tasks on behalf of users.
  • Work AI-first, using tools like Claude Code, Cursor, Codex, and Copilot to dramatically accelerate development while maintaining a high quality bar.
  • Partner closely with product, design, and legal to ship secure, reliable, and scalable features.
  • Improve our engineering systems, CI/CD pipelines, and developer tooling as the company grows.
What We're Looking For
  • 3-5 years of experience building modern full stack applications, ideally at an early-stage startup.
  • Strong experience designing and operating production systems on AWS.
  • Deep expertise with React, Next.js, Node.js, and TypeScript.
  • Hands-on experience building AI-powered applications using modern foundation models (Anthropic, OpenAI, Bedrock, or similar).
  • Experience building agentic systems, including retrieval, tool calling, memory, evaluation, and multi-step orchestration.
  • Fluent with modern AI development tools such as Claude Code, Cursor, Codex, or Copilot—you use them to multiply your output, not just generate code.
  • Proven ability to design software architecture and make sound technical tradeoffs.
  • Strong product instincts and a track record of shipping polished, end-to-end features.
  • High ownership, excellent judgment, and the ability to move quickly through ambiguity.
Why Join Ridley

This is an opportunity to help redefine how millions of people buy and sell homes.

Ridley is already live with real customers, real revenue, and strong early momentum. We've been featured in The New York Times , The Daily , and CBS, and are backed by leading investors who believe, as we do, that AI will fundamentally reshape residential real estate.

If you want to help build the company that defines that future, we'd love to talk.

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