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Mid Level Backend Developer Jobs in Colorado (NOW HIRING)

Java Developer

Denver, CO

$52.50 - $68/hr

Jr-Mid level Java Developer * Preferable 2-5 years. * Backend Java Developer * Spring * NoSQL/MySQL * Cassandar (plus) * Candidates with the soft skills (passionate, pro-active, personable ...

Peraton is seeking a Java Developer to help build Web and backend application/services for a credentialing/case management system using Java/Spring-based REST APIs along with a Web 2.0 framework in a ...

Mid-Level Test Engineer

Englewood, CO · On-site

$87K - $157K/yr

Leidos is seeking an experienced Mid-Level Test Engineer to join the Chinook Program supporting an ... Familiarity with CI/CD tools including Jenkins, GitLab, Azure DevOps, or similar platforms.

We were founded in 1996 in Denver and have numerous accolades including Denver Business Journal's "Top Software Developers , "Fastest Growing Companies , and Inc. Magazine's "Fastest Growing ...

Showing results 41-60

Mid Level Backend Developer information

See Colorado salary details

$12

$60

$88

How much do mid level backend developer jobs pay per hour?

As of Aug 17, 2026, the average hourly pay for mid level backend developer in Colorado is $60.71, according to ZipRecruiter salary data. Most workers in this role earn between $49.81 and $71.78 per hour, depending on experience, location, and employer.

What is a mid level backend developer?

Mid Level Backend Developers are software engineers who specialize in developing and maintaining the server-side logic, databases, and APIs that power web and mobile applications. They usually have a few years of professional experience and are proficient in programming languages like Java, Python, Node.js, or Ruby. These developers are responsible for ensuring that data flows efficiently between the server and users, optimizing performance, and collaborating with front-end developers and other team members. Their role often includes troubleshooting server issues, writing automated tests, and implementing security best practices.

What are the key skills and qualifications needed to thrive as a mid level backend developer?

To thrive as a Mid Level Backend Developer, you need strong programming skills in languages like Java, Python, or Node.js, a solid understanding of server-side logic, and experience with relational and non-relational databases. Familiarity with frameworks (such as Spring or Express), RESTful API development, version control systems (like Git), and containerization tools (like Docker) is typically required. Effective problem-solving, collaboration, and clear communication are standout soft skills for this role. These abilities are crucial for building reliable, scalable backend systems and working efficiently within development teams.

What are some typical challenges a mid level backend developer might face when working on large-scale applications?

As a Mid Level Backend Developer, you may frequently encounter challenges related to maintaining code quality and ensuring scalability as applications grow. Managing database performance, optimizing API responses, and integrating with legacy systems are common tasks that require both technical skill and problem-solving ability. Collaboration with frontend developers, DevOps engineers, and QA testers is essential to ensure smooth deployments and consistent user experiences. Staying up-to-date with new frameworks and technologies, while balancing project deadlines, is also a key part of the role.

What is the difference between Mid Level Backend Developer vs Junior Backend Developer?

AspectMid Level Backend DeveloperJunior Backend Developer
Experience2-4 years0-2 years
SkillsProficient in backend frameworks, databases, API developmentBasic understanding of backend concepts, learning frameworks
ResponsibilitiesDeveloping features, troubleshooting, code reviewsAssisting in tasks, learning codebase, bug fixing
Work EnvironmentCollaborates with teams, independent problem-solving

The main difference between a Mid Level Backend Developer and a Junior Backend Developer lies in experience and skill level. Mid level developers have more hands-on experience, handle complex tasks independently, and contribute significantly to project development. Junior developers are still learning, focusing on foundational tasks and gaining industry knowledge. This distinction helps employers identify the right candidate for different stages of project involvement.

What are the most commonly searched types of Backend Developer jobs in Colorado?

The most popular types of Backend Developer jobs in Colorado are:

What cities in Colorado are hiring for Mid Level Backend Developer jobs?

Cities in Colorado with the most Mid Level Backend Developer job openings:

Infographic showing various Mid Level Backend Developer job openings in Colorado as of July 2026, with employment types broken down into 89% Full Time, 7% Part Time, and 4% Contract. Highlights an 78% Physical, 4% Hybrid, and 18% Remote job distribution, with an average salary of $126,273 per year, or $60.7 per hour.

Mid-Level Test Engineer (TS/SCI with Polygraph Required)

DeNOVO Solutions

Aurora, CO

$80K - $100K/yr

Full-time

Medical, Dental, Vision, Retirement, PTO

Posted 13 days ago


Job description

Position Title: Mid-Level Test Engineer
Location: Aurora, CO
Clearance Required: TS/SCI with CI Polygraph
Sign-On Bonus Eligible: N/A

Ensure Quality and Reliability as a Mid-Level Test Engineer!
DeNOVO Solutions is seeking a Mid-Level Test Engineer to design, develop, and execute comprehensive testing strategies for modern software systems supporting mission-critical operations. In this role, you will lead automated testing efforts, validate system integrations, and ensure high-quality software delivery across Agile development teams. Your expertise in test automation and system validation will directly contribute to reliable and scalable mission solutions.

Why You’ll Love This Role

  • Drive Software Quality: Design and implement automated testing strategies that ensure system reliability and performance.
  • Work with Modern Testing Tools: Leverage advanced frameworks and CI/CD pipelines to support continuous integration and delivery.
  • Collaborate Across Teams: Partner with developers and engineers to validate functionality and improve overall system quality.

A Day in the Life

  • Design, develop, and maintain automated test suites for software applications.
  • Develop and execute integration and end-to-end testing strategies.
  • Perform REST API testing and validation to ensure service reliability.
  • Integrate automated tests into CI/CD pipelines for continuous testing.
  • Collaborate with development teams to identify, document, and resolve defects.
  • Create and maintain test documentation, including test plans and defect reports.
  • Participate in Agile development activities and contribute to quality assurance best practices.

What You Bring to the Table

  • Strong proficiency in automated testing frameworks and methodologies.
  • Experience designing and implementing integration test suites.
  • Experience with REST API testing and validation.
  • Proficiency with Cypress or similar end-to-end testing frameworks.
  • Experience integrating automated tests into CI/CD pipelines.
  • Knowledge of test design patterns and best practices.
  • Experience with Git version control and collaborative workflows.
  • Understanding of the software development lifecycle and Agile methodologies.
  • Strong analytical, debugging, and problem-solving skills.
  • Excellent written communication skills for test documentation and defect reporting.
  • Experience working collaboratively with development teams.
  • Strong programming skills in JavaScript or TypeScript (preferably).
  • Experience testing microservice architectures (preferably).
  • Familiarity with additional testing frameworks such as Playwright, Selenium, Jest, or Mocha (preferably).
  • Experience with API testing tools such as Postman, REST Assured, or Supertest (preferably).
  • Knowledge of performance and load testing tools such as k6, JMeter, or Gatling (preferably).
  • Experience with contract testing tools such as Pact or similar (preferably).
  • Familiarity with testing in containerized environments such as Docker and Kubernetes (preferably).
  • Experience with test data management and mocking strategies (preferably).
  • Knowledge of accessibility testing including WCAG compliance and tools such as axe-core (preferably).
  • Experience with visual regression testing tools (preferably).
  • Familiarity with backend technologies such as Go, Node.js, or Python (preferably).
  • Understanding of security testing principles (preferably).
  • Experience with test reporting and metrics dashboards (preferably).
  • Knowledge of behavior-driven development (BDD) frameworks such as Cucumber or SpecFlow (preferably).
  • Experience mentoring junior test engineers (preferably).
  • Familiarity with cloud test platforms such as AWS/C2S (preferably).

What You Need
Experience: Two (2) to Five (5) years of professional software testing experience.
Education: Professional experience supporting software testing and quality assurance activities.
Certifications: None
Clearance: TS/SCI with CI Polygraph

Salary Range: $80,000.00 - $100,000.00 (Commensurate with experience)

About Us: DeNOVO Solutions prioritizes customer competitiveness and collaboration, offering innovative cleared personnel and solutions. As a Minority Owned-Service Disabled Veteran Owned Small Business (MO/SDVOSB), we emphasize customer success and a cooperative work environment. Our comprehensive benefits package includes:

Join Our Team! DeNOVO Solutions, LLC, a Minority Owned-Service Disabled Veteran Owned Small Business (MO/SDVOSB) dedicated to providing the best technical and professional services throughout the Intelligence Community (IC). We offer the following as part of our benefits package to all of our full-time employees:

  • Medical, Dental, and Vision Premiums 100% Employer Paid for you and your legal dependents.
  • Short-Term amp; Long-Term Disability
  • 401k with 6% Match
  • 11 Paid Federal Holidays
  • 120 hours of Paid Time Off (PTO)
  • Company Outings and Trips
  • Tuition Reimbursement, Skillset Training, and New/Renewed Certification assistance

DeNOVO Solutions is an Equal Opportunity/Affirmative Action Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, age, disability, marital status, veteran status, sexual orientation, genetic information or any other protected characteristic under applicable law.