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Senior Software Engineer Startup Jobs in Colorado

At Infleqtion we embrace a startup mentality driven by results, urgency, and customer-focused ... We are seeking a Senior Software Engineer to join the team building the control system software for ...

Sr Software Engineer

Boulder, CO · On-site

$106K - $145K/yr

At Infleqtion we embrace a startup mentality driven by results, urgency, and customer-focused ... We are seeking a Senior Software Engineer to join the team building the control system software for ...

About Compa Compa is a venture-backed AI startup revolutionizing the future of compensation. In a ... As a Senior Software Engineer on the Platform Team, you will own and lead backend and ...

As a Senior Software Engineer, you will play a critical role in designing, developing, and delivering high-quality software solutions. Your expertise in C#, .NET Core, AWS or Azure, Xamarin, and ...

Senior Software Engineer

Aurora, CO · On-site

$124K - $163K/yr

They are seeking a Senior Software Engineer to provide technical expertise in sustaining critical mission-related software and systems for a U.S. Government customer. Responsibilities : • The ...

Senior Software Engineer Description - Fusion/ODF is a Windows-based low-level device platform software component installed on millions of HP devices to enable connectivity, telemetry, and more ...

Senior Software Engineer

Englewood, CO · On-site

$104K - $163K/yr

The Senior Software Engineer will play a key technical leadership role, contributing hands-on across the full secure product development lifecycle while influencing architecture, development ...

Senior Software Engineer

Aurora, CO · On-site

$170K - $260K/yr

Are you a Senior Software Engineer who is ready for a new challenge that will launch your career to the next level? * Tired of being treated like a company drone? * Tired of promised adventures ...

Senior Software Engineer

Boulder, CO · On-site

$137K - $180K/yr

We are seeking a Senior Software Engineer to become an integral part of our team! You will be responsible for creating and modifying computer application software or specialized utility programs. As ...

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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 Jul 17, 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 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 engineers make $300,000 a year?

Senior software engineers, especially those with extensive experience, specialized skills, and working in high-demand industries or companies, can earn $300,000 or more annually. Compensation often includes base salary, bonuses, and stock options, particularly in tech startups or large technology firms in competitive markets.

Are senior software engineers still in demand?

Senior software engineers remain in high demand due to ongoing digital transformation and the need for experienced developers skilled in programming languages, cloud platforms, and software architecture. Companies across various industries seek senior engineers to lead projects, improve systems, and mentor junior staff, making this a stable and valuable role in the tech industry.

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.

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.

Can you make $500,000 as a software engineer?

Senior software engineers at startups can potentially earn $500,000 annually through a combination of base salary, bonuses, and equity, especially in high-growth companies or with significant stock options. Achieving this level often requires extensive experience, specialized skills, and working in competitive markets or successful startups with lucrative equity packages.

What engineer makes $500,000 a year?

Senior Software Engineers at successful startups or large tech companies can earn $500,000 or more annually, often through a combination of base salary, bonuses, and stock options. High compensation typically requires extensive experience, specialized skills, and equity participation in the company.
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 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:

$106K - $145K/yr

Full-time

Medical, Dental, Vision, Life, Retirement, PTO

Re-posted 2 days ago


Job description

Infleqtion is on a mission to commercialize atom-based quantum technologies that deliver orders-of-magnitude improvements in sensing and computing applications. We are seeking self-motivated, energetic individuals with exceptional problem-solving and technical skills to help drive our Quantum Computing mission forward.

At Infleqtion we embrace a startup mentality driven by results, urgency, and customer-focused innovation:

  • We break down barriers between disciplines, stepping in wherever we can make the biggest impact.
  • We thrive in uncertainty, embracing challenges as opportunities.
  • We move quickly to prototype while never losing sight of the critical importance of systems engineering process and attention to detail.
  • We take bold, calculated risks to drive progress.

We are seeking a Senior Software Engineer to join the team building the control system software for Infleqtion's quantum computers. The ideal candidate is an experienced backend engineer with a strong background in creating robust and scalable scientific applications. You will play a crucial role in designing, building, and maintaining backend services and control systems that drive our neutral atom quantum machines.

JOB RESPONSIBILITIES

The duties and responsibilities outlined below include essential functions of the role. Depending on business needs, this role may perform a combination of some or all of the following duties. Duties, responsibilities, and activities may change, or new ones may be assigned at any time.

  • Design, develop, and deploy reliable, maintainable, scalable, and fault-tolerant backend services and frameworks that control and calibrate our neutral atom quantum computers.
  • Collaborate with interdisciplinary teams, including scientists, opto-mechanical engineers, and electrical engineers, to solve complex problems and deliver high-quality software solutions.
  • Empower interdisciplinary teams to create the tools they need by teaching engineering and programming best practices.
  • Mentor and guide junior engineers, fostering their growth and enhancing the team's technical expertise.
  • Lead code and design reviews, upholding engineering best practices and promoting a culture of quality and collaboration.
  • Support and debug all layers of the control stack from real-time embedded kernels to distributed services.
  • Advocate for and implement innovative software development methodologies and tools to improve team efficiency and product quality.

Requirements

  • Bachelor's degree in Computer Science, Applied Mathematics, Physics or related field and a minimum of 5 years prior work experience
  • Experience with Python and at least one compiled language, with a desire to learn and work in Rust
  • Experience with Linux and virtualization technologies like Docker
  • Good verbal and written communication skills, able to effectively share information with technical and non-technical staff
  • Good collaboration skills, able to work in a team environment where engagement and participation are an expected part of successful job performance
  • Skilled in typical software engineering disciplines: testing, debugging, revision control, error-handling, readability, documentation, general code health, etc.
  • Desire to constantly improve and learn inside and outside of expertise
PREFERRED EXPERIENCE:
  • Domain-specific experience in statistics, machine learning, or AMO physics
  • Experience with Numpy, Scipy, and Pytorch
  • Experience with image analysis, emphasis on realtime object detection
  • Experience with databases (relational and non-relational) including but not limited to timeseries data, SQL, and ETL processes
  • Experience creating CI/CD pipelines, and Python package creation with C or Rust extensions

Benefits

The targeted salary range for this role is $106,000 to $145,000 on an annualized basis plus eligibility to participate in our annual incentive plan.

In addition to your base compensation, we offer a generous Total Rewards program which includes:

  • 100% company paid Employee coverage for Medical, Dental, Vision, and Short/Long Term Disability insurance programs
  • Employer funded Health Savings Account
  • Unlimited Paid Time Off
  • 401(k) Matching Programs
  • Company paid Life and AD&D Insurance
  • Flexible Healthcare Savings Account
  • Paid FMLA Leave
  • Paid Maternity/Paternity Leave
  • Employer Assistance Program
  • Student Loan Repayment

Equal Opportunity

Here you have freedom to embrace your whole self: who you love, your gender identity and expression, skin color, age, appearance, disability, neurodiversity, DNA, military/veteran status, citizenship, and other factors that make up who you are. Your uniqueness is valued, welcomed, and appreciated here. We are dedicated to providing a positive workplace and base all employment decisions on your qualifications, performance, merits, as well as business needs. We are proud to be an Equal Employment Opportunity Employer.