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Contract Backend Developer Jobs in Denver, CO (NOW HIRING)

CosQube INC

Scala Developer

Denver, CO · On-site

Denver, US Duration:12+ Months Contract with Extension Employment Type: C2C/C2H/W2 Interview ... Implement backend systems using frameworks like Spring Boot, Akka HTTP, or Play * Ensure reliable ...

Booz Allen Hamilton

Software Engineer

Aurora, CO

$86K - $198K/yr

As a back-end developer, you know that a good site or system needs the right combination of clean ... as well as contract-specific affordability and organizational requirements. The projected ...

Cymertek

Full Stack Developer

Aurora, CO · On-site

SIMILAR CAREER TITLES Software Engineer, Backend Developer, Frontend Developer, Web Developer ... Most contracts allow additional experience (4-5 years) in lieu of a Bachelor's Degree. Some ...

Cymertek

Java, Scala, Python Developer

Aurora, CO · On-site

Most contracts allow additional experience (4-5 years) in lieu of a Bachelor's Degree. Some ... Build APIs and backend services to support applications * Optimize code for performance and ...

Cymertek

React.js / Node.js Developer

Aurora, CO · On-site

SIMILAR CAREER TITLES Frontend Developer, Backend Developer, Full Stack Developer, JavaScript ... Most contracts allow additional experience (4-5 years) in lieu of a Bachelor's Degree. Some ...

Cymertek Corporation

Java / Spring Developer

Aurora, CO · On-site

$90 - $130/hr

SIMILAR CAREER TITLESJava Developer, Spring Boot Developer, Backend Developer, Full Stack Java ... Most contracts allow additional experience (4-5 years) in lieu of a Bachelor's Degree. Some ...

Cymertek

SIGINT Software Developer

Aurora, CO · On-site

... Developer, Backend Developer, Data Processing Engineer, etc. DEGREE (Level Desired) Bachelor ... Most contracts allow additional experience (4-5 years) in lieu of a Bachelor's Degree. Some ...

Cymertek Corporation

SIGINT Software Developer

Aurora, CO · On-site

$110 - $160/hr

... Developer, Backend Developer, Data Processing Engineer, etc. DEGREE (Level Desired) Bachelor ... Most contracts allow additional experience (4-5 years) in lieu of a Bachelor's Degree. Some ...

Cymertek

Software Developer

Aurora, CO · On-site

SIMILAR CAREER TITLES Software Engineer, Full Stack Developer, Backend Developer, Frontend ... Most contracts allow additional experience (4-5 years) in lieu of a Bachelor's Degree. Some ...

Cymertek Corporation

Software Developer

Aurora, CO · On-site

$85 - $130/hr

SIMILAR CAREER TITLESSoftware Engineer, Full Stack Developer, Backend Developer, Frontend Developer ... Most contracts allow additional experience (4-5 years) in lieu of a Bachelor's Degree. Some ...

Cymertek Corporation

API Developer

Aurora, CO · On-site

$110 - $150/hr

Backend Developer * API Engineer * Web Services Developer * Integration Developer * Software ... Most contracts allow additional experience (4-5 years) in lieu of a Bachelor's Degree. Some ...

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All JobsContract Backend Developer JobsContract Backend Developer Jobs in Denver, CO

Contract Backend Developer information

See Denver, CO salary details

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$59

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How much do contract backend developer jobs pay per hour?

As of Aug 26, 2026, the average hourly pay for contract backend developer in Denver, CO is $59.42, according to ZipRecruiter salary data. Most workers in this role earn between $48.75 and $70.29 per hour, depending on experience, location, and employer.

What is a contract backend developer?

Contract backend developers are professionals hired on a temporary or project basis to build and maintain the server-side logic, databases, and APIs that power web or mobile applications. They work behind the scenes to ensure that applications function smoothly, handle data efficiently, and communicate effectively with front-end systems. Unlike full-time employees, contract backend developers typically work for a set duration or on specific projects, offering flexibility to both clients and developers. They often bring specialized expertise in programming languages such as Python, Java, Node.js, or Ruby, and may work remotely or on-site depending on the contract terms.

What are the key skills and qualifications needed to thrive as a contract backend developer, and why are they important?

To thrive as a Contract Backend Developer, you need strong programming skills in languages like Python, Java, or Node.js, along with experience in database management and API development, supported by a relevant degree or proven project experience. Familiarity with frameworks (such as Django, Spring, or Express), cloud services (like AWS or Azure), and version control systems (e.g., Git) is typically expected. Excellent problem-solving abilities, strong communication, and the ability to quickly adapt to new codebases and team environments set top contractors apart. These skills and qualities are crucial for delivering reliable, scalable backend solutions and integrating smoothly into diverse project teams.

What are some common challenges faced by contract backend developers when joining a new project?

Contract Backend Developers often encounter challenges such as quickly understanding existing codebases, adapting to different tech stacks, and aligning with the team's development practices. Since contract roles usually have tight deadlines, developers must rapidly familiarize themselves with project documentation and workflows. Effective communication with team members and proactive clarification of requirements are essential to ensure smooth integration and successful project outcomes.

What are the most commonly searched types of Backend Developer jobs in Denver, CO?

The most popular types of Backend Developer jobs in Denver, CO are:

What are popular job titles related to Contract Backend Developer jobs in Denver, CO?

For Contract Backend Developer jobs in Denver, CO, the most frequently searched job titles are:

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The top searched job categories for Contract Backend Developer jobs in Denver, CO are:

What cities near Denver, CO are hiring for Contract Backend Developer jobs?

Cities near Denver, CO with the most Contract Backend Developer job openings:

Contract Backend Developer jobs near you

Scala Developer

CosQube INC

Denver, CO • On-site

Contractor

Re-posted 6 days ago

Job description

Greetings from Cosqube,
Hope your day is Treating you well!
 
We are immediately hiring for the below given position, if you think you are right suitable resources for this opportunity based on your skills and expertise, please do share your updated resume along with contact details we will be happy to discuss in detail about this role.
 
Project Details:
Role: Scala Developer
Location: Denver, US
Duration:12+ Months Contract with Extension
Employment Type: C2C/C2H/W2
Interview Criteria: MS teams Video
Job Description:
 
  • Design and develop RESTful and GraphQL APIs using Java and Scala
  • Build event-driven services and microservices that produce and consume messages via Apache Kafka
  • Implement backend systems using frameworks like Spring Boot, Akka HTTP, or Play
  • Ensure reliable, fault-tolerant Kafka integration, including schema validation, error handling, and retries
  • Collaborate with frontend and platform teams to define clear API contracts and integration patterns
  • Contribute to code quality, testing, and CI/CD automation
  • Monitor, troubleshoot, and optimize performance of services and API endpoints
  • Strong programming experience with Scala (Akka, Play, or Cats/Scalaz) and Java (8+)
  • Hands-on experience with Apache Kafka (producer/consumer APIs, Avro/Protobuf, topic design)
  • Experience building and consuming RESTful APIs and optionally GraphQL APIs
  • Knowledge of functional programming and reactive patterns
  • Familiarity with Spring Boot, asynchronous programming, and dependency injection
  • Strong unit and integration testing practices
  • Comfortable with Git, CI/CD pipelines, and API security (OAuth2, JWT)

 Nice to Have

  • Kafka Streams or Akka Streams experience
  • Exposure to Kafka Connect, Schema Registry, and message validation patterns
  • Knowledge of Docker, Kubernetes, and cloud-native app development
  • Familiarity with API gateways (e.g., Kong, Apigee) or service mesh (e.g., Istio)