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Senior Backend Developer Jobs in Colorado (NOW HIRING)

Capital Rx

Senior Backend Developer - Integrations

Denver, CO · On-site

$124K - $161K/yr

Build robust backend applications in Python on AWS Lambda, API Gateway, SMS, ECS, and other cloud technologies. * Implement backend code in a serverless, cloud-native environment (Flask/AWS Lambda ...

Wunder

Senior Backend Engineer (Ruby on Rails)

Boulder, CO · On-site

$150K - $184K/yr

They are seeking an experienced Senior Backend Engineer to solve complex problems and bring automation to their solar development and loan servicing systems. Responsibilities : • Writing, reviewing ...

bet365

Senior Back-End Engineer, Sports Platform

Denver, CO · On-site

$125K - $155K/yr

As a Senior Back-End Engineer, you will be responsible for developing, maintaining and evolving our US Sports platform. We are building a team and trading platform to help us become a leader in the ...

Spire

Senior Backend Software Engineer

Boulder, CO · Hybrid

$127K - $167K/yr

About the Role Spire is looking for a Senior Software Engineer to help design, build, and improve ... This is a hands-on engineering role focused on backend systems, platform engineering, observability ...

Capital Rx

Senior Backend Software Developer

Denver, CO · On-site

$139K - $200K/yr

Hybrid 3 days (offices in NYC, Denver, CO and Charlotte, NC area) Position Summary Join our mission to transform our nation's healthcare system as a Senior Backend Software Developer. In this role ...

Spire

Senior Backend Software Engineer

Boulder, CO · On-site

$130K - $171K/yr

About the Role Spire is looking for a Senior Software Engineer to help design, build, and improve ... Design, develop, and maintain backend services and platform tooling * Collaborate with ...

Spire

Senior Backend Software Engineer

Boulder, CO · Hybrid

$130K - $171K/yr

About the Role Spire is looking for a Senior Software Engineer to help design, build, and improve ... This is a hands-on engineering role focused on backend systems, platform engineering, observability ...

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Senior Backend Developer information

See Colorado salary details

$67.3K

$147K

$200.3K

How much do senior backend developer jobs pay per year?

As of Jul 27, 2026, the average yearly pay for senior backend developer in Colorado is $147,043.00, according to ZipRecruiter salary data. Most workers in this role earn between $126,700.00 and $164,600.00 per year, depending on experience, location, and employer.

What does a Senior Backend Developer do?

A Senior Backend Developer is responsible for designing, building, and maintaining the server-side logic of web applications. They work with databases, APIs, and server infrastructure to ensure that applications run smoothly, securely, and efficiently. In addition to writing robust code, they often mentor junior developers, contribute to architectural decisions, and collaborate with frontend teams to deliver seamless user experiences. Their expertise is crucial for scaling applications and implementing best practices in software development.

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

L1, L2, L3, and L4 are levels of software developers that indicate experience and skill, often used in organizations to define seniority. For a Senior Backend Developer, L3 or L4 typically signifies advanced expertise, with L4 representing the most senior or lead roles involving complex problem-solving and mentorship. These levels help structure career progression and expectations within development teams.

What is the difference between Senior Backend Developer vs Backend Developer?

AspectSenior Backend DeveloperBackend Developer
Required Experience5+ years, leadership skills1-3 years, foundational skills
ResponsibilitiesDesign architecture, mentor juniors, optimize systemsImplement features, fix bugs, write code
Skills & CertificationsAdvanced coding, system design, relevant certificationsBasic coding, database knowledge
Work EnvironmentCollaborates with cross-functional teams, often in larger projectsFocuses on individual tasks within projects

The main difference between a Senior Backend Developer and a Backend Developer lies in experience, responsibilities, and leadership. Senior Backend Developers typically have more years of experience, take on complex system design, and mentor junior staff, whereas Backend Developers focus on implementing features and fixing bugs. Both roles are essential in backend development teams, but the senior role involves more strategic and leadership duties.

What are the key skills and qualifications needed to thrive as a Senior Backend Developer, and why are they important?

To thrive as a Senior Backend Developer, you need advanced proficiency in server-side programming languages (such as Java, Python, or Node.js), deep understanding of API design, and experience with database management, often supported by a degree in computer science or related field. Familiarity with version control systems (like Git), cloud platforms (such as AWS or Azure), and relevant certifications in backend technologies are commonly required. Strong problem-solving abilities, effective communication, and leadership skills help you collaborate with cross-functional teams and mentor junior developers. These competencies ensure robust, scalable backend systems and drive successful project delivery in complex technical environments.

What engineer makes $500,000 a year?

Senior backend developers with extensive experience, specialized skills in high-demand technologies, and work at large tech companies or in executive roles can earn $500,000 or more annually. Compensation often includes base salary, bonuses, and stock options, especially in competitive markets or leadership positions.

Will AI replace backend devs?

AI is unlikely to fully replace senior backend developers, as their expertise involves designing complex systems, problem-solving, and maintaining infrastructure that requires human judgment. AI tools can automate routine tasks and assist in coding, but human oversight remains essential for architecture, security, and optimization. Backend developers will continue to adapt by integrating AI and focusing on higher-level development skills.

What are common challenges Senior Backend Developers face when leading complex projects, and how can they address them?

Senior Backend Developers often encounter challenges such as integrating legacy systems with new technologies, ensuring scalability under increased load, and coordinating cross-functional teams for seamless feature delivery. Addressing these challenges typically involves proactive architectural planning, clear communication with frontend and DevOps teams, and adopting best practices like code reviews and automated testing. Staying updated on emerging technologies and fostering a culture of knowledge sharing within the team also help in overcoming technical obstacles and driving successful project outcomes.

Is L5 at Google Senior?

L5 at Google typically corresponds to a Senior Software Engineer level, which involves significant technical expertise, project ownership, and mentorship responsibilities. It is considered a senior-level position within Google's engineering hierarchy, often requiring several years of experience and proficiency in coding, system design, and problem-solving.
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 are popular job titles related to Senior Backend Developer jobs in Colorado? For Senior Backend Developer jobs in Colorado, the most frequently searched job titles are:
What job categories do people searching Senior Backend Developer jobs in Colorado look for? The top searched job categories for Senior Backend Developer jobs in Colorado are:
What cities in Colorado are hiring for Senior Backend Developer jobs? Cities in Colorado with the most Senior Backend Developer job openings:
Senior Backend Developer jobs near you
Infographic showing various Senior Backend Developer job openings in Colorado as of July 2026, with employment types broken down into 100% Full Time. Highlights an 70% In-person, and 30% Remote job distribution, with an average salary of $147,043 per year, or $70.7 per hour.

Senior Backend Engineer

Sphinx Defense

Colorado Springs, CO • Hybrid

$160K - $185K/yr

Other

Medical, Dental, Vision, Retirement

Posted 20 days ago

Job description

ABOUT THE ROLE

Sphinx is hiring a Senior Backend Engineer to join our team, building the next generation of mission planning and command and control software for space communications programs. This team is charged with creating modern, resilient services and capabilities to service the US Government for the next decade and beyond.

As a Senior Backend Engineer, you will play a key role in building a cutting-edge communications platform for US government satellites. Sphinx is hiring a Senior Backend Engineer to join our Space Communications team, building a ground communications and data-transport platform for US government satellites. As a Senior Backend Engineer, you will lead the development of core platform services and design and build technology to support the operations of various US  government satellites. You'll work as both an individual contributor and a lead for more junior engineers.

You will have an outsized role in determining what we build and how we work. You'll work as both an individual contributor and a lead for more junior engineers.

What you will be focusing on:

  • Building multi-tenant services on public cloud platforms like AWS
  • Building, architecting, and consuming APIs and backend services as part of the platform ecosystem with an emphasis on automation, testing, and security
  • Advocating for improvements to product quality, security, and performance that have a particular impact on your team and others
  • Supporting junior engineering talent with mentorship or technical guidance
  • Interacting with customers and partners to help them integrate with our services
  • Scale the services and solve interesting Space Communication challenges

You might be a good fit if you have:

  • 5+ years of progressively responsible software engineering experience
  • Have extensive experience with Python, FastAPI, Postgres, AWS, Docker, Kubernetes, and Terraform*
  • Demonstrable in-depth knowledge of at least one commercial cloud platform and its associated services 
  • Led the architecture, development, and building of backend services and APIs to ensure performance, security, and reliability
  • An ability to successfully own technical problems end-to-end
  • Made enough mistakes and booked enough wins to know what not to build and what good looks like
  • Excellent communication skills, working with end-users to design and build solutions to their needs, a habit of self-directed learning of new technologies, and the ability to learn quickly and adapt to a fast-paced environment

LOCATION

This hybrid role requires a regular presence in Colorado Springs, CO. 

COMPENSATION

This role is between $160,000 - $185,000 base salary.

BENEFITS

Compensation includes competitive salary, meaningful equity ownership, profit sharing, employer 401(k) contribution, and 100% employer covered medical, dental, and vision insurance for you and your dependents.

EEO STATEMENT

At Sphinx Defense, we are devoted to building a team that represents a variety of backgrounds, perspectives, and skills. Sphinx Defense is committed to providing equal employment opportunities to all employees and applicants for employment without regard to race, color, religion, sex, sexual orientation, and gender identity.

Apply