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Senior Software Engineer Startup Jobs in Colorado

247Hire

Senior Software Engineer

Englewood, CO · On-site

$110 - $140/hr

Our client in Englewood Colorado is looking for a Senior Software Engineer on a direct hire basis. This is an opportunity to join a collaborative, fast-paced development team where your work will ...

247Hire

Senior Software Engineer

Greenwood Village, CO · On-site

$110 - $140/hr

Our client in Englewood Colorado is looking for a Senior Software Engineer on a direct hire basis. This is an opportunity to join a collaborative, fast-paced development team where your work will ...

OASYS, INC.

Senior Software Engineer

Littleton, CO · On-site

$120K - $150K/yr

Senior Software Engineer, Level 3OASYS, INC., a Leading-Edge Government contractor, is seeking applicants for a Senior Software Engineer, Level 3, to support our customer in Littleton, CO.Summary:

OASYS

Senior Software Engineer

Littleton, CO · Hybrid

$120K - $158K/yr

Senior Software Engineer Staff, Level 5 OASYS, INC., a Leading-Edge Government contractor, is seeking applicants for a Senior Software Engineer Staff, Level 5 to support our customer in Littleton, CO.

OASYS, INC.

Senior Software Engineer

Littleton, CO · On-site

$120K - $150K/yr

Senior Software Engineer, Level 3 OASYS, INC., a Leading-Edge Government contractor, is seeking applicants for a Senior Software Engineer, Level 3, to support our customer in Littleton, CO. Summary:

OASYS

Senior Software Engineer

Littleton, CO · Hybrid

$120K - $158K/yr

Senior Software Engineer, Level 3 OASYS, INC., a Leading-Edge Government contractor, is seeking applicants for a Senior Software Engineer, Level 3, to support our customer in Littleton, CO. Summary:

Project Canary

Senior Software Engineer

Denver, CO

We're hiring a senior engineer who enjoys solving hard technical problems and wants meaningful ... Startup Adaptability We are a mid-stage startup. Priorities evolve. Documentation is not always ...

OASYS, INC.

Senior Software Engineer

Littleton, CO · On-site

$180K - $230K/yr

Senior Software Engineer Staff, Level 5OASYS, INC., a Leading-Edge Government contractor, is seeking applicants for a Senior Software Engineer Staff, Level 5 to support our customer in Littleton, CO.

OASYS

Senior Software Engineer

Littleton, CO · Hybrid

$120K - $158K/yr

Senior Software Engineer, Level 3 OASYS, INC., a Leading-Edge Government contractor, is seeking applicants for a Senior Software Engineer, Level 3 to support our customer in Littleton, CO. Summary:

Atom Computing

Senior Software Engineer

Boulder, CO · On-site

$140K - $185K/yr

Atom Computing is looking for a Senior Software Engineer to build the software platform that ... Experience working at both a large technology company and a startup. Atom Computing provides a wide ...

OASYS, INC.

Senior Software Engineer

Littleton, CO · On-site

$180K - $230K/yr

Senior Software Engineer Staff, Level 5 OASYS, INC., a Leading-Edge Government contractor, is seeking applicants for a Senior Software Engineer Staff, Level 5 to support our customer in Littleton, CO.

Atom Computing

Senior Software Engineer

Boulder, CO · On-site

$140K - $185K/yr

Atom Computing is looking for a Senior Software Engineer to build the software platform that ... Experience working at both a large technology company and a startup. Atom Computing provides a wide ...

OASYS, INC.

Senior Software Engineer

Littleton, CO · On-site

$120K - $150K/yr

Senior Software Engineer, Level 3 OASYS, INC., a Leading-Edge Government contractor, is seeking applicants for a Senior Software Engineer, Level 3 to support our customer in Littleton, CO. Summary:

ApplyMint

Senior Software Engineer

Denver, CO · On-site

$120 - $190/hr

Senior Software Engineer Location: San Francisco, CA or Denver, CO (Hybrid, 3 days/week). Salary: $120k-$190k + equity. Full-time. Offstream is building the infrastructure for the environmental ...

OASYS, INC.

Senior Software Engineer

Littleton, CO · On-site

$120K - $150K/yr

Senior Software Engineer, Level 3OASYS, INC., a Leading-Edge Government contractor, is seeking applicants for a Senior Software Engineer, Level 3 to support our customer in Littleton, CO.Summary:

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All JobsSoftware Engineer Startup JobsSenior Software Engineer Startup JobsSenior Software Engineer Startup Jobs in Colorado

Senior Software Engineer Startup information

See Colorado salary details

$79.4K

$150.7K

$201.9K

How much do senior software engineer startup jobs pay per year?

As of Aug 24, 2026, the average yearly pay for senior software engineer startup in Colorado is $150,674.00, according to ZipRecruiter salary data. Most workers in this role earn between $128,800.00 and $169,800.00 per year, depending on experience, location, and employer.

What does a senior software engineer do at a startup?

A Senior Software Engineer at a startup is responsible for designing, developing, and maintaining the core software products or services. They often take on a broad range of tasks, including coding, code reviews, system architecture, and mentoring junior team members. In a startup environment, they may also contribute to product decisions, help set technical direction, and quickly adapt to changing priorities. Their role is critical in building scalable, reliable solutions while fostering innovation and collaboration within a small, fast-paced team.

What are some unique challenges senior software engineers face when working at a startup compared to a larger company?

Senior Software Engineers at startups often navigate a fast-paced, rapidly changing environment where priorities can shift quickly. Unlike at larger organizations with established processes and specialized teams, startup engineers may wear multiple hats, handling everything from architecture decisions to hands-on coding and even DevOps tasks. This role typically requires a high degree of autonomy and the ability to make impactful technical decisions with limited resources. The collaborative nature means frequent interaction with product managers, designers, and often even company leadership, creating opportunities for broad influence but also demanding strong communication and adaptability.

What are the key skills and qualifications needed to thrive as a senior software engineer at a startup, and why are they important?

To thrive as a Senior Software Engineer at a startup, you need advanced programming abilities, architectural design experience, and a solid understanding of software development lifecycles, typically backed by a bachelor's degree in computer science or a related field. Familiarity with modern frameworks, cloud platforms (like AWS or Azure), version control systems (such as Git), and agile methodologies is essential, with certifications in relevant technologies being advantageous. Strong problem-solving, adaptability, and effective communication skills help you navigate the dynamic startup environment and mentor junior team members. These skills are crucial to rapidly building scalable solutions, driving innovation, and supporting business growth in a fast-paced and often ambiguous setting.

What is the difference between Senior Software Engineer Startup vs Software Engineer Startup?

AspectSenior Software Engineer StartupSoftware Engineer Startup
Required CredentialsBachelor's/Master's in CS or related field, 3+ years experienceBachelor's in CS or related field, 0-2 years experience
Work EnvironmentFast-paced startup, leadership responsibilities, mentorshipCollaborative team, learning-focused, entry-level to mid-level tasks
Employer & Industry UsageTech startups, scale-ups, innovative projectsEarly-stage startups, product development teams
Common Search & ComparisonHigher responsibility, technical expertise, leadershipLearning opportunities, foundational skills, growth potential

The main difference between a Senior Software Engineer Startup and a Software Engineer Startup lies in experience, responsibilities, and leadership. Senior Software Engineers typically have more experience, take on mentorship roles, and handle complex projects, while Software Engineers are often in entry to mid-level positions focused on skill development and supporting team tasks.

How much does a senior software engineer startup make?

A senior software engineer at a startup typically earns between $100,000 and $160,000 annually, depending on location, experience, and company size. Compensation may also include stock options or equity, especially in early-stage startups, and often requires proficiency in programming languages like Python, Java, or JavaScript.

Is there a shortage of senior software engineers?

There is a high demand for senior software engineers across many industries due to the ongoing need for advanced technical skills, experience with programming languages like Java, Python, and cloud platforms, and leadership abilities. This demand often results in competitive salaries and opportunities, especially for those with strong problem-solving skills and experience in fast-paced startup environments.

What are the most commonly searched types of Software Engineer Startup jobs in Colorado?

The most popular types of Software Engineer Startup jobs in Colorado are:

What are popular job titles related to Senior Software Engineer Startup jobs in Colorado?

For Senior Software Engineer Startup jobs in Colorado, the most frequently searched job titles are:

What job categories do people searching Senior Software Engineer Startup jobs in Colorado look for?

The top searched job categories for Senior Software Engineer Startup jobs in Colorado are:

What cities in Colorado are hiring for Senior Software Engineer Startup jobs?

Cities in Colorado with the most Senior Software Engineer Startup job openings:

Senior Software Engineer Startup jobs near you

Senior Software Engineer

247Hire

Englewood, CO • On-site

$110 - $140/hr

Other

Medical, Dental, Vision, Retirement, PTO

Posted 13 days ago

Job description

Our client in Englewood Colorado is looking for a Senior Software Engineer on a direct hire basis. This is an opportunity to join a collaborative, fast-paced development team where your work will directly influence the evolution of a cutting-edge technology platform. If you enjoy solving complex technical challenges, working with modern Microsoft technologies, and contributing to a product-driven environment, this is an excellent opportunity to make an impact.

Company Profile
  • Transportation Technology
  • Great team with a great company culture
  • Weekly team lunches
Senior Software Engineer Role
  • The Software Engineer will play a key role in designing, developing, and supporting enterprise-level applications within a collaborative Agile development environment.
  • Design, develop, and maintain scalable full-stack applications using modern Microsoft technologies
  • Build intuitive, user-friendly interfaces from product concepts, wireframes, or minimal design direction
  • Design and integrate complex software solutions across web, API, and mobile platforms
  • Support applications spanning web portals, APIs, and mobile technologies
  • Collaborate closely with Product Owners, Quality Assurance Engineers, and fellow developers throughout the software development lifecycle
  • Participate in Agile ceremonies including sprint planning, stand-ups, retrospectives, and code reviews
  • Contribute to architecture discussions, peer mentoring, and continuous process improvements
  • Research and implement emerging technologies that improve scalability, performance, and user experience
Senior Software Engineer Background Profile
  • 4+ years of professional software development experience using C#
  • 4+ years of experience developing with .NET Core 3.x or newer
  • 4+ years of experience with Entity Framework Core, SQL databases, HTML, and CSS
  • Experience with Blazor or another modern web application framework
  • Ability to design, implement, and integrate enterprise-level software solutions
  • Experience working with Azure DevOps or similar development platforms
  • Experience working within Agile development environments utilizing Git source control
  • Strong written and verbal communication skills
  • Self-motivated, detail-oriented, and deadline-driven
  • Comfortable participating in code reviews, technical discussions, and collaborative problem-solving
  • Passion for learning new technologies and continuously improving development practices
Features and Benefits
  • Medical
  • Dental Vision
  • PTO
  • 401k with match
  • Gym Membership
Senior Software Engineer Background Profile
  • 4+ years of professional software development experience using C#
  • 4+ years of experience developing with .NET Core 3.x or newer
  • 4+ years of experience with Entity Framework Core, SQL databases, HTML, and CSS
  • Experience with Blazor or another modern web application framework
  • Ability to design, implement, and integrate enterprise-level software solutions
  • Experience working with Azure DevOps or similar development platforms
  • Experience working within Agile development environments utilizing Git source control
  • Strong written and verbal communication skills
  • Self-motivated, detail-oriented, and deadline-driven
  • Comfortable participating in code reviews, technical discussions, and collaborative problem-solving
  • Passion for learning new technologies and continuously improving development practices
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About 247Hire

Sourced by ZipRecruiter

Industry

Recruiting and staffing services

Company size

201 - 500 Employees

Headquarters location

Oak Brook, IL, US

Year founded

2002

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