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Senior Backend Python Jobs in Denver, CO (NOW HIRING)

Pentera

Senior Backend Engineer

Denver, CO · On-site

$180K - $210K/yr

Strong proficiency in Java or Python * Proven experience designing and operating backend systems ... Why Pentera At Pentera, senior backend engineers remain deeply hands-on while working on systems ...

Spire

Senior Backend Software Engineer

Boulder, CO · Hybrid

$127K - $167.50K/yr

Strong Python development skills * Experience with at least one compiled language such as Rust, C ... Strong backend engineering experience building and maintaining production systems * Experience ...

Spire

Senior Backend Software Engineer

Boulder, CO · On-site

$171K - $202.50K/yr

Strong Python development skills * Experience with at least one compiled language such as Rust, C ... Strong backend engineering experience building and maintaining production systems * Experience ...

Spire

Senior Backend Software Engineer

Boulder, CO · Hybrid

$171K - $202.50K/yr

Strong Python development skills * Experience with at least one compiled language such as Rust, C ... Strong backend engineering experience building and maintaining production systems * Experience ...

Judi Health

Senior Backend Software Developer

Denver, CO · On-site +1

$110.40K - $190K/yr

... as a Senior Backend Software Developer. In this role you will assist in leading projects from ... Strong Python (Flask / SQLAlchemy) experience. * Advanced PostgreSQL database knowledge (e.g ...

Capital Rx

Senior Backend Software Developer

Denver, CO · On-site +1

$110.40K - $190K/yr

... as a Senior Backend Software Developer. In this role you will assist in leading projects from ... Strong Python (Flask / SQLAlchemy) experience. * Advanced PostgreSQL database knowledge (e.g ...

Leidos

Backend Software Engineer

Boulder, CO

$107.90K - $195.05K/yr

... Python development, and mission‑driven systems , and you're ready for work that actually moves ... If you take pride in your craft, write your own résumé, and deliver results that senior leaders ...

Leidos

Backend Software Engineer

Denver, CO

$107.90K - $195.05K/yr

... Python development, and mission‑driven systems , and you're ready for work that actually moves ... If you take pride in your craft, write your own résumé, and deliver results that senior leaders ...

Leidos

Backend Software Engineer

Aurora, CO

$107.90K - $195.05K/yr

... Python development, and mission‑driven systems , and you're ready for work that actually moves ... If you take pride in your craft, write your own résumé, and deliver results that senior leaders ...

Leidos

Backend Software Engineer

Aurora, CO

$107.90K - $195.05K/yr

If you've spent the last few years building your expertise in backend engineering, Java or Python ... If you take pride in your craft, write your own resume, and deliver results that senior leaders ...

Leidos

Mid-Level Backend Software Engineer

Aurora, CO

$87.10K - $157.45K/yr

... senior levels, you'll thrive here. We're hiring a Backend Software Engineer to support a ... Design, develop, test, and maintain backend application components using Java or Python * REST API ...

Leidos

Mid-Level Backend Software Engineer

Aurora, CO

$87.10K - $157.45K/yr

... senior levels, you'll thrive here. We're hiring a Backend Software Engineer to support a ... Design, develop, test, and maintain backend application components using Java or Python * REST API ...

Leidos

Mid-Level Backend Software Engineer

Boulder, CO

$87.10K - $157.45K/yr

... senior levels, you'll thrive here. We're hiring a Backend Software Engineer to support a ... Design, develop, test, and maintain backend application components using Java or Python * REST API ...

Leidos

Mid-Level Backend Software Engineer

Denver, CO

$87.10K - $157.45K/yr

... senior levels, you'll thrive here. We're hiring a Backend Software Engineer to support a ... Design, develop, test, and maintain backend application components using Java or Python * REST API ...

Frontera

Senior+ Software Engineer - B2B Platform

Denver, CO · On-site

$126.10K - $166.20K/yr

The Role We're seeking a Senior+ Software Engineer to own and scale the backend systems powering ... Expertise in Python, Node.js, or similar backend technologies . * Solid experience with relational ...

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Senior Backend Python information

See Denver, CO salary details

$16.5K

$152.6K

$196.6K

How much do senior backend python jobs pay per year?

As of May 29, 2026, the average yearly pay for senior backend python in Denver, CO is $152,573.00, according to ZipRecruiter salary data. Most workers in this role earn between $149,800.00 and $172,400.00 per year, depending on experience, location, and employer.

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

To thrive as a Senior Backend Python Developer, you need expertise in Python programming, strong knowledge of backend frameworks (such as Django or Flask), and experience with database management, often backed by a degree in computer science or equivalent experience. Familiarity with version control systems like Git, containerization tools like Docker, cloud platforms (e.g., AWS), and possibly certifications in cloud or Python technologies are common requirements. Outstanding problem-solving skills, effective communication, and the ability to mentor junior developers help set top performers apart. These competencies ensure the development of robust, scalable, and maintainable backend systems that support business objectives.

What are some common challenges Senior Backend Python developers face when working on large-scale systems?

Senior Backend Python developers working on large-scale systems often encounter challenges such as ensuring application scalability, maintaining code quality across distributed teams, and optimizing performance for high traffic. Balancing the integration of new features with legacy system constraints can also be demanding. Effective communication and collaboration with frontend teams, DevOps, and product managers are crucial for delivering reliable and maintainable backend solutions.

What does a Senior Backend Python Developer do?

A Senior Backend Python Developer designs, builds, and maintains the server-side logic of web applications using Python. They are responsible for creating robust APIs, optimizing databases, ensuring application security, and integrating third-party services. In addition, they often mentor junior developers, contribute to architectural decisions, and collaborate closely with frontend and DevOps teams. Their work ensures that applications are scalable, reliable, and efficient. Senior developers typically have several years of experience and deep knowledge of Python frameworks like Django or Flask.

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

AspectSenior Backend PythonBackend Developer
Required CredentialsBachelor's in CS or related, 5+ years experience, Python expertiseBachelor's in CS or related, 2-4 years experience, Python knowledge
Work EnvironmentTech companies, startups, enterprise systemsTech firms, startups, software agencies
Employer & Industry UsageUsed across industries requiring scalable backend solutionsCommon in web development and software services
Search & Comparison IntentUnderstanding senior roles, responsibilities, salaryEntry to mid-level backend roles, skill requirements

Senior Backend Python professionals typically have more experience, advanced skills, and leadership responsibilities compared to Backend Developers. They often work on complex systems, mentor junior staff, and have a broader understanding of architecture. Backend Developers focus on building and maintaining backend services with less emphasis on leadership or strategic planning.

What are popular job titles related to Senior Backend Python jobs in Denver, CO? For Senior Backend Python jobs in Denver, CO, the most frequently searched job titles are:
What job categories do people searching Senior Backend Python jobs in Denver, CO look for? The top searched job categories for Senior Backend Python jobs in Denver, CO are:
Senior Backend Python jobs near you

Senior Backend Engineer

Pentera

Denver, CO • On-site

$180K - $210K/yr

Full-time

Medical, Retirement

Posted 10 hours ago

Job description

Description
Location:
Remote position. Occasional travel to our office in Golden, Colorado is required.
About Pentera
Pentera is the global leader in Automated Security Validation, enabling organizations worldwide to safely emulate real-world attacker behavior and uncover their true security gaps across SaaS, on-prem, cloud, and hybrid environments.
With more than 400 team members and over 1,100 customers in more than 50 countries, Pentera operates at scale and continues to shape how enterprises validate cybersecurity resilience. Our platform is trusted by security teams to challenge defenses, validate controls, and drive meaningful security outcomes.
At Pentera, backend engineers build and operate production-grade systems that sit at the core of our customers' security workflows.
About the Role
We are looking for a senior, hands-on Backend Engineer to join our Application team and help build the core systems behind Pentera's automated security validation platform.
In this role, you will work on large-scale backend services that support our SaaS and on-prem products, including systems that enable intelligent automation and data-driven decision-making across the platform. You will take ownership of complex backend components and contribute to technical decisions that shape how the platform evolves at scale. This is a role for an experienced individual contributor who enjoys deep technical challenges, end-to-end ownership, and building reliable systems in a highly complex domain.
Roles and Responsibilities
  • Own the design, development, and maintenance of core backend services for Pentera's SaaS and on-prem platforms
  • Build scalable, secure, and high-performance backend solutions that support enterprise-scale usage
  • Develop and maintain RESTful APIs and microservice-based architectures that enable complex product workflows
  • Take end-to-end ownership of features, from design and implementation through testing, deployment, and production monitoring
  • Contribute to architectural discussions and technical decision-making as a senior individual contributor
  • Collaborate closely with frontend engineers, product managers, QA, and research teams to deliver high-quality solutions
  • Review code and provide thoughtful, constructive feedback to uphold engineering standards
  • Investigate and resolve complex production issues and performance bottlenecks
  • Continuously improve backend reliability, scalability, and maintainability

Requirements
  • 7+ years of experience as a Backend Engineer in an Agile development environment
  • Bachelor's degree in Computer Science or a related technical field, or equivalent practical experience
  • Strong proficiency in Java or Python
  • Proven experience designing and operating backend systems using RESTful APIs and microservice architectures
  • Deep understanding of object-oriented design principles, design patterns, and writing clean, maintainable code
  • Experience working with NoSQL databases such as MongoDB (Atlas)
  • Hands-on experience working in cloud environments, preferably AWS
  • Strong problem-solving skills, attention to detail, and a proactive approach to troubleshooting
  • Clear communication and strong collaboration skills

Preferred Skills
  • Experience with additional backend languages such as Python, Go, or Node.js
  • Experience working with Docker and containerized environments
  • Familiarity with Linux environments and security-related concepts
  • Experience working with graph databases such as Neo4j
  • Exposure to security-focused tooling or penetration testing frameworks

Compensation
The base salary range for this role is $180,000-$210,000, depending on experience, skills, and location. This range reflects base compensation only. In addition, Pentera offers a comprehensive total rewards package that includes performance-based bonuses and stock options as part of our long-term incentive plan, along with health and wellness benefits, retirement plans, and additional perks designed to support long-term growth and well-being.
Why Pentera
At Pentera, senior backend engineers remain deeply hands-on while working on systems that matter. The services you build are used daily by security teams around the world to validate defenses and make informed security decisions.
This role offers technical ownership, complex engineering challenges, and the opportunity to influence the evolution of a mature, widely adopted platform without moving into people management.
We are an equal opportunity employer and we are committed to building a diverse and talented workforce. We do not discriminate on the basis of race, sex, religion, colour, national origin, gender, gender identity, sexual orientation, age, marital status, veteran status, medical condition, disability, or any other class or characteristic protected by applicable law. We welcome candidates from all backgrounds to join us!

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