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Back End Developer Jobs in Boulder, CO (NOW HIRING)

Quindar

Backend Engineer - Security Cleared

Denver, CO · On-site

$120K - $180K/yr

Day to day, you will be a part of the engineering team of frontend and backend engineers working in an Agile Scrum environment. Tech Skills * Proficiency in Python, GraphQL, Docker, and Terraform (or ...

New

Simple Energy

Back-End Engineer

Boulder, CO · On-site

$110 - $160/hr

Basic Position Requirements (Back-End Engineer) * Scala and/or Java experience a plus * Understanding of worker/message queues * NoSQL experience Everyone on the team should have a basic ...

Simple Energy

Back-End Engineer

Boulder, CO · On-site

Basic Position Requirements (Back-End Engineer) Big data/scaling experience Scala and/or Java experience a plus Understanding of worker/message queues NoSQL experience Everyone on the team should ...

Cyberspatial

Backend API Engineer

Boulder, CO · On-site

We are looking for a talented and motivated Backend API Engineer to join our growing engineering team. In this role, you'll design, build, and maintain high-performance APIs that power our core ...

New

Lively

Sr. Software Engineer - Backend

Denver, CO · On-site

About the Role We are looking for a strong Backend Senior Software Engineer who wants to create ... Familiarity with AWS cloud platforms and DevOps practices is a plus. Here's a glimpse into our ...

Lively

Sr. Software Engineer - Backend

Denver, CO · On-site

$125K - $200K/yr

About the Role We are looking for a strong Backend Senior Software Engineer who wants to create ... Familiarity with AWS cloud platforms and DevOps practices is a plus. Here's a glimpse into our ...

Booz Allen Hamilton

Software Engineer

Aurora, CO · On-site

$86K - $198K/yr

As a back-end developer, you know that a good site or system needs the right combination of clean code, APIs, analytics, and infrastructure to develop a user-focused solution. We're looking for a ...

ClifyX

Senior Scala Backend engineer

Denver, CO · On-site

ClifyX is seeking a strong Scala backend engineer with microservices experience to join their small ... with DevOps engineers to build and deploy infrastructure with cloud deployment technologies. • ...

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Showing results 21-40

All JobsBack End Developer JobsBack End Developer Jobs in Boulder, CO

Back End Developer information

See Boulder, CO salary details

$12

$59

$87

How much do back end developer jobs pay per hour?

As of Sep 4, 2026, the average hourly pay for back end developer in Boulder, CO is $59.88, according to ZipRecruiter salary data. Most workers in this role earn between $49.13 and $70.82 per hour, depending on experience, location, and employer.

What is a back end developer?

A Back End Developer is a programmer who specializes in building and maintaining the server-side logic, databases, and application functionality that power websites and web applications. Unlike front end developers, who focus on the visual and interactive elements users see, back end developers work behind the scenes to ensure data is stored, processed, and delivered correctly. They typically use programming languages like Python, Java, Ruby, or PHP, and interact with databases such as MySQL or MongoDB. Their work is crucial for making sure applications run smoothly, securely, and efficiently.

What is a back end developer?

A back end developer is a computer science professional who specializes in functionality that takes place on the server side or backend. As a back end developer, you write code to create software that solves a business need. Your responsibilities are to research the needs of either your employer, or a particular industry, find a problem, and create a software solution. A back end developer differs from a traditional web developer, or front end developer, in that back-end software may not have a user interface or even have exposure to the web.

What are the key skills and qualifications needed to thrive as a back end developer?

To thrive as a Back End Developer, you need strong programming skills in languages like Java, Python, or Node.js, along with a solid understanding of databases and API design, typically supported by a degree in computer science or related experience. Familiarity with frameworks such as Spring or Django, version control systems like Git, and cloud platforms (e.g., AWS or Azure) is often required, with certifications in these areas considered beneficial. Problem-solving, effective communication, and teamwork are crucial soft skills that help developers collaborate and address complex technical challenges. These competencies are vital for building reliable, scalable systems that support front-end applications and ensure robust product performance.

What are some common challenges back end developers face when integrating with front-end teams?

Back End Developers often encounter challenges when aligning data structures and APIs with front-end requirements, especially as user interface needs evolve rapidly during development. Effective communication and regular collaboration with front-end developers are essential to ensure that endpoints, data formats, and error handling are well-coordinated. Additionally, maintaining consistent documentation and using tools like Swagger or Postman can help streamline integration and reduce misunderstandings between teams.

What is the difference between Back End Developer vs Front End Developer?

AspectBack End DeveloperFront End Developer
Primary FocusServer-side logic, databases, APIsUser interface, website layout, client-side scripting
Skills & TechnologiesLanguages like Java, Python, Ruby; databases; server managementHTML, CSS, JavaScript, frameworks like React or Angular
Work EnvironmentBackend systems, server environments, cloud platformsDesign tools, browser testing, UI/UX design
Common CertificationsCertified Web Developer, AWS Certified DeveloperCertified Front End Developer, UI/UX certifications

Back End Developers focus on server-side logic, databases, and APIs, ensuring the website's functionality behind the scenes. Front End Developers work on the visual and interactive aspects users see and interact with. Both roles are essential in web development, often collaborating to create seamless digital experiences.

Is back end developer in demand?

Back end developers are in high demand due to the growth of web applications and digital services. Skills in programming languages like Python, Java, or Node.js, along with knowledge of databases and APIs, are highly sought after by employers across various industries.
More about Back End Developer jobs

What are popular job titles related to Back End Developer jobs in Boulder, CO?

For Back End Developer jobs in Boulder, CO, the most frequently searched job titles are:

What cities near Boulder, CO are hiring for Back End Developer jobs?

Cities near Boulder, CO with the most Back End Developer job openings:

Back End Developer jobs near you
Infographic showing various Back End Developer job openings in Boulder, CO as of August 2026, with employment types broken down into 75% Full Time, 20% Part Time, 1% Temporary, and 4% Contract. Highlights an 87% Physical, 4% Hybrid, and 9% Remote job distribution, with an average salary of $124,542 per year, or $59.9 per hour.

Backend Engineer - Security Cleared

Quindar

Denver, CO • On-site

$120K - $180K/yr

Full-time

Medical, Retirement, PTO

Posted 2 days ago

New

Job description

Quindar
Quindar builds modern, cloud-native satellite mission operations software with a simple mission: to operate satellites like servers. Our platform replaces fragmented, legacy ground systems with an integrated, automation-driven approach that brings modern software velocity to space operations.
We're a small, fast-moving team with deep aerospace and software roots, energized by big challenges and motivated by the impact we have on real missions in this next chapter of the Space Age. If you want to work with sharp, ambitious people who push boundaries, move quickly, and are excited to take space operations to the next level, Quindar is the place to do it.
What You'll Be Doing
You will be responsible for developing ground satellite operations software using Python and AWS services. Don't worry, you do not need to be an expert in satellites or understand space! Satellites are just flying servers you can connect to every 90 minutes but we connect to hundreds of them.
You will develop APIs, integrate with AWS services such as EC2, S3, RDS, Fargate, and EKS with a focus on scalability, security, cost, and performance of the software. Working closely with cross-functional teams to understand requirements, you will implement new features and troubleshoot issues. Your strong knowledge of AWS services and best practices will enable you to optimize resource utilization and automate processes, ultimately contributing to the efficient and reliable operations of thousands of satellites.
You will primarily be responsible for developing backend software capabilities, but the ideal candidate can contribute across backend software development, generative AI integrations, DevSecOps and CI/CD tooling, and software architecture design and maintenance.
Day to day, you will be a part of the engineering team of frontend and backend engineers working in an Agile Scrum environment.
Tech Skills
  • Proficiency in Python, GraphQL, Docker, and Terraform (or relevant Infrastructure-as-Code tools)
  • Experience designing, analyzing, and troubleshooting APIs of AI platforms such as OpenAI, Anthropic, and AskSage
  • Strong knowledge of containerized applications
  • Familiarity with Kubernetes cluster deployments
  • Experience with AWS services such as Lambda, ECS, EKS, CloudWatch, S3, EFS/EBS, EC2, and RDS
  • Fluency in collaborative development using Git with platforms like GitHub or GitLab

Soft Skills
  • Deep technical analysis and troubleshooting skills
  • Independent self-starter; able to complete projects on time with minimal guidance
  • A high standard for software maintainability, quality, resilience, and performance
  • Strong cross-functional communication between frontend and backend engineers and product managers

Background Qualifications
  • Bachelor's degree in Computer Science (or related field)
  • 3+ years professional experience in backend development, full stack development or other related role. Professional experience can be replaced with a self-starter who has drive, the technical skills, and is obsessed with their product.
  • U.S. Person status required - we are not able to sponsor visas at this time.
  • Must have active U.S. Security Clearance

ITAR REQUIREMENTS
  • To conform to U.S. Government export regulations, applicant must be a (i) U.S. citizen or national, (ii) U.S. lawful, permanent resident (aka green card holder), (iii) Refugee under 8 U.S.C. § 1157, or (iv) Asylee under 8 U.S.C. § 1158, or be eligible to obtain the required authorizations from the U.S. Department of State. Learn more about the ITAR here.
Why you'll love working at Quindar
  • We work in a cutting edge industry and you will get the opportunity to be part of a small team with a large direct impact on the success of our customers' space missions!
  • We take work life balance very seriously. We require employees to take 15 days off but provide unlimited PTO and follow most US federal government holidays.
  • Mental health is just as important as physical so we provide quarterly health & wellness benefits.
  • Comprehensive health insurance for you and your family with 100% coverage for employees.
  • We encourage employees to save for retirement and provide 4% 401(k) matching.
  • Each quarter we have a 4-day company offsite. Previous locations include San Francisco, Nashville, Denver, Santa Fe, New Orleans, San Diego, Bozeman, and New York City.
  • Our culture and company is evolving. You will be key in creating the next major or minor version!

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