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Mid Level Full Stack Developer Jobs in Denver, CO

Cymertek

Full Stack Developer

Aurora, CO · On-site

Full Stack Developer LOCATION Aurora, CO 80014 CLEARANCE TS/SCI Full Poly (Please note this ... DEGREE (Level Desired) Bachelor's Degree DEGREE (Focus) Computer Science, Software Engineering ...

PTMA Financial Solutions

Full Stack Developer

Denver, CO · On-site

$95K - $115K/yr

Our Product Development team is seeking a Full Stack Developer to lead the development of our next set of game-changing products for local governments. You'll get the chance to learn from and work ...

Cymertek

Full Stack Developer

Aurora, CO

Full Stack Developer LOCATIONAurora, CO 80014 CLEARANCETS/SCI Full Poly (Please note this position ... DEGREE (Level Desired)Bachelor's DegreeDEGREE (Focus)Computer Science, Software Engineering ...

PassTime

Full Stack Developer

Littleton, CO · On-site

$100K - $120K/yr

Leading provider of award-winning GPS solutions seeking Full Stack Software Developer WHAT WE DO Headquartered a few miles south of Denver, in Littleton, Colorado, PassTime is a leading provider of ...

PassTime

Full Stack Developer

Littleton, CO · On-site

$100K - $120K/yr

Leading provider of award-winning GPS solutions seeking Full Stack Software Developer WHAT WE DO Headquartered a few miles south of Denver, in Littleton, Colorado, PassTime is a leading provider of ...

DataAnnotation

Full Stack Developer

Centennial, CO · Remote

$40 - $75/hr

... full-stack, machine learning, and other engineers -- who are driving real-world impact in AI ... Fluency in English (native or bilingual level) * Detail-oriented * Experience with algorithms, data ...

DataAnnotation

Full Stack Developer

Aurora, CO · Remote

$40 - $75/hr

... full-stack, machine learning, and other engineers -- who are driving real-world impact in AI ... Fluency in English (native or bilingual level) * Detail-oriented * Experience with algorithms, data ...

DataAnnotation

Full Stack Developer

Thornton, CO · Remote

$40 - $75/hr

... full-stack, machine learning, and other engineers -- who are driving real-world impact in AI ... Fluency in English (native or bilingual level) * Detail-oriented * Experience with algorithms, data ...

DataAnnotation

Full Stack Developer

Boulder, CO · Remote

$40 - $75/hr

... full-stack, machine learning, and other engineers -- who are driving real-world impact in AI ... Fluency in English (native or bilingual level) * Detail-oriented * Experience with algorithms, data ...

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All JobsMid Level Full Stack Developer JobsMid Level Full Stack Developer Jobs in Denver, CO

Mid Level Full Stack Developer information

See Denver, CO salary details

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How much do mid level full stack developer jobs pay per hour?

As of Jun 12, 2026, the average hourly pay for mid level full stack developer in Denver, CO is $61.00, according to ZipRecruiter salary data. Most workers in this role earn between $50.72 and $70.29 per hour, depending on experience, location, and employer.

What are the key skills and qualifications needed to thrive in the Mid Level Full Stack Developer position, and why are they important?

To thrive as a Mid Level Full Stack Developer, you need a solid understanding of front-end and back-end development, proficiency in programming languages like JavaScript, Python, or Java, and experience with frameworks such as React and Node.js. Familiarity with version control systems like Git, cloud platforms (e.g., AWS or Azure), and relevant certifications such as AWS Certified Developer can be advantageous. Strong problem-solving skills, effective communication, and the ability to work collaboratively set outstanding candidates apart. These skills and qualities are essential for building scalable applications and navigating the dynamic requirements of cross-functional development teams.

What is a Mid Level Full Stack Developer job?

A Mid Level Full Stack Developer is responsible for developing and maintaining both front-end and back-end components of web applications. They have a solid understanding of programming languages, frameworks, databases, and server-side logic. Typically, they collaborate with designers, other developers, and stakeholders to implement features and optimize performance. With a few years of experience, they can work independently on tasks while contributing to project architecture and problem-solving.

What is L1, L2, L3, and L4 developer?

In the context of a Mid Level Full Stack Developer role, L1, L2, L3, and L4 typically refer to different levels of seniority or expertise within an organization, with L1 being entry-level and L4 indicating a senior or lead position. These levels often correspond to experience, technical skills, and responsibilities, and are used to structure career progression and compensation. Understanding these levels helps in assessing job expectations and growth opportunities in full stack development roles.

What is a mid-level full stack developer?

A mid-level full stack developer is a software professional with experience in both front-end and back-end development, typically possessing 2-5 years of experience. They are proficient in multiple programming languages, frameworks, and tools, and can handle project tasks independently while collaborating with teams. This role often requires knowledge of databases, version control, and deployment processes.

Will Fullstack be replaced by AI?

Full Stack Developers perform tasks that involve coding, designing, and maintaining both frontend and backend systems, which require critical thinking and problem-solving skills. While AI tools can assist with coding and automation, they are unlikely to fully replace the need for human developers who understand project context, user experience, and complex system integration. Continuous learning and adapting to new technologies remain essential in this role.

What types of projects and responsibilities can I expect as a Mid Level Full Stack Developer?

As a Mid Level Full Stack Developer, you’ll typically work on both client-facing and server-side components of web applications, collaborating closely with UX/UI designers, backend engineers, and product managers. You may be responsible for creating new features, debugging complex issues, optimizing application performance, and maintaining codebases. It's common to participate in code reviews and Agile sprints, ensuring best practices are followed throughout the development cycle. This role provides exposure to a wide range of technologies and business needs, offering strong opportunities for learning and career advancement as you take on more complex assignments.

Is full stack worth it in 2026?

For a Mid Level Full Stack Developer, full stack development remains a valuable skill set due to high demand for versatile developers proficient in both front-end and back-end technologies. Staying current with frameworks like React, Node.js, and cloud platforms can enhance job prospects, as full stack roles often require knowledge of multiple programming languages and tools. The role offers opportunities for growth, but continuous learning is essential to remain competitive in the evolving tech landscape.
What are the most commonly searched types of Full Stack Developer jobs in Denver, CO? The most popular types of Full Stack Developer jobs in Denver, CO are:
What are popular job titles related to Mid Level Full Stack Developer jobs in Denver, CO? For Mid Level Full Stack Developer jobs in Denver, CO, the most frequently searched job titles are:
What job categories do people searching Mid Level Full Stack Developer jobs in Denver, CO look for? The top searched job categories for Mid Level Full Stack Developer jobs in Denver, CO are:
What cities near Denver, CO are hiring for Mid Level Full Stack Developer jobs? Cities near Denver, CO with the most Mid Level Full Stack Developer job openings:
Mid Level Full Stack Developer jobs near you
Infographic showing various Mid Level Full Stack Developer job openings in Denver, CO as of June 2026, with employment types broken down into 97% Full Time, 2% Part Time, and 1% Contract. Highlights an 89% Physical, 3% Hybrid, and 8% Remote job distribution, with an average salary of $126,871 per year, or $61 per hour.
Mid-Senior Full Stack Developer

Mid-Senior Full Stack Developer

CACI International, Inc.

Aurora, CO • On-site

Full-time

Medical, Retirement, PTO

Posted 14 days ago

Job description

Job Title: Mid-Senior Full Stack Developer
Job Category: Engineering
Time Type: Full time
Minimum Clearance Required to Start: TS/SCI with Polygraph
Employee Type: Regular
Percentage of Travel Required: Up to 10%
Type of Travel: Continental US
Anticipated Posting End: 8/31/2026
The Opportunity:
As part of the Clairvoyant program, you will design and build the primary touchpoint between our platform and its customers - a sophisticated API layer and modern web UI delivering critical, real-time data to third-party partners.
As a Mid-Senior Full Stack Developer, you will operate within a hardened, AWS-based, Kubernetes-native environment where modern interface standards meet strict government security requirements. This is a high-visibility role where you will:
  • Engineer the Interface: Build responsive web applications using React that visualize complex, real-time data sets for external customers.
  • Architect the API Layer: Design and maintain RESTful or GraphQL APIs supporting seamless third-party integrations at scale.
  • Secure the Stack: Implement OAuth2, OIDC, and mTLS protocols and ensure all code meets DISA STIG and OWASP standards.
  • Own the Lifecycle: Drive the full SDLC from agile requirements through automated CI/CD deployment on Kubernetes.

Responsibilities:
  • Design and maintain responsive front-end applications using React, handling complex data visualization and high-concurrency use cases for external partners.
  • Build and maintain scalable RESTful and GraphQL APIs using Node.js, Python (FastAPI/Flask), or Java (Spring Boot) for third-party data access.
  • Implement authentication and authorization patterns including OAuth2, OIDC, mTLS, and RBAC to ensure secure external data access.
  • Design and optimize relational (PostgreSQL) and non-relational (Elasticsearch, Redis) data store interactions.
  • Containerize applications with Docker and deploy to Kubernetes on AWS in coordination with the DevSecOps team.
  • Ensure all code meets DISA STIG requirements and addresses the OWASP Top 10 throughout the development lifecycle.
  • Integrate with GitLab CI/CD pipelines and Helm charts for deployment across environments.
  • Conduct code reviews, provide technical guidance for junior developers, and serve as the SME for third-party API integration.
  • Maintain technical documentation, API specifications, and integration guides.

Qualifications:
Required:
  • Current TS/SCI clearance with Polygraph.
  • Bachelor's degree in Computer Science or related field, or equivalent experience.
  • 5+ years (mid-level) or 10+ years (senior-level) of full-stack software engineering experience.
  • Advanced proficiency in JavaScript/TypeScript and React, including Redux and Context API.
  • Strong experience building APIs with Node.js, Python (FastAPI/Flask), or Java (Spring Boot).
  • Proficiency with Docker - writing Dockerfiles, building hardened images, and integrating with CI/CD pipelines.
  • Familiarity with GitLab CI/CD, Helm, and Kubernetes deployment.
  • Comfortable working in an agile, distributed team environment.
  • Ability to travel up to 5%.

Desired:
  • Experience with data visualization libraries such as D3.js or Recharts.
  • Familiarity with GraphQL federation and advanced API design patterns.
  • Experience with AWS services including ECS/EKS, API Gateway, CloudFront, and RDS.
  • Working knowledge of OAuth2, OIDC, mTLS, and modern API security patterns.
  • Knowledge of the OWASP Top 10 and STIG-compliant development practices.
  • Exposure to Elasticsearch query optimization and index management at scale.
  • Working knowledge of OAuth2, OIDC, mTLS, and modern API security patterns.
  • Knowledge of the OWASP Top 10 and STIG-compliant development practices.
  • Familiarity with RHEL 9 hardening and STIG compliance at the OS and container level.
  • Relevant certifications: AWS Developer Associate, CKAD, or CompTIA Security+.

What You Can Expect:
A culture of integrity.
At CACI, we place character and innovation at the center of everything we do. As a valued team member, you'll be part of a high-performing group dedicated to our customer's missions and driven by a higher purpose - to ensure the safety of our nation.
An environment of trust.
CACI values the unique contributions that every employee brings to our company and our customers - every day. You'll have the autonomy to take the time you need through a unique flexible time off benefit and have access to robust learning resources to make your ambitions a reality.
A focus on continuous growth.
Together, we will advance our nation's most critical missions, build on our lengthy track record of business success, and find opportunities to break new ground - in your career and in our legacy.
Pay Range:
There are a host of factors that can influence final salary including, but not limited to, geographic location, Federal Government contract labor categories and contract wage rates, relevant prior work experience, specific skills and competencies, education, and certifications. Our employees value the flexibility at CACI that allows them to balance quality work and their personal lives. We offer competitive compensation, benefits and learning and development opportunities. Our broad and competitive mix of benefits options is designed to support and protect employees and their families. At CACI, you will receive comprehensive benefits such as; healthcare, wellness, financial, retirement, family support, continuing education, and time off benefits.
The proposed salary range for this position is:
$108,400 - 227,500 USD
CACI is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, pregnancy, sexual orientation, age, national origin, disability, status as a protected veteran, or any other protected characteristic.

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