Senior Fullstack Engineer

Yesenergy; Boulder (CO); Hybrid; USD 135,000 - 160,000; Full time

Job summary

Yes Energy in Boulder, CO is seeking a Senior Full Stack Engineer with deep back-end expertise to shape the architecture of our next-generation energy market platform. This role blends hands-on development with technical leadership across settlement processing, bid submission, market workflows, and platform APIs.

The majority of work is back-end focused, with front-end tasks as needed. You will design scalable services, lead C#/.NET implementations, define API patterns, mentor engineers, and

Qualifications

• 7+ years of software engineering experience.
• Strong expertise in C#/.NET.
• Experience designing distributed systems and APIs.
• Energy markets or trading platforms experience preferred.

Responsibilities

• Design architecture for scalable platform services.
• Lead back-end implementation in C#/.NET.
• Define API and service design patterns.
• Guide database architecture and performance.
• Mentor engineers through design reviews.
• Contribute to JavaScript front-end when appropriate.
• Drive engineering best practices, testing, and operational excellence.
• Partner with Product and Engineering leadership on technical direction.
• Leverage AI-assisted development tools to improve velocity and quality.

Skills

C# / .NET

Distributed systems

API design

Mentoring

JavaScript

Tools

AI-assisted development tools

Cloud-native architectures

SQL databases

CI/CD tooling

Job description

Join the Market Leader in Electric Power Data and Analytics Solutions

The electrical grid is the largest and most complicated machine ever built. Yes Energy’s industry‑leading electric power trading analytics software provides real‑time visibility into the massive amount of data generated by the North American electrical grid daily. Our unique and innovative view of the data informs real‑time trading decisions and mid‑to‑long‑term investment decisions that keep utility prices low, support the energy transition, and keep the grid running. It’s both challenging work and work with a purpose.

Be a part of our successful, growing business during international transformation.

Position Summary

We're looking for a Senior Full Stack Engineer with deep back‑end expertise to help shape the architecture of our next‑generation energy market platform. This role combines hands‑on development with technical leadership across settlement processing, bid submission, market workflows, and platform APIs.

The majority of development is back‑end focused, with front‑end work serving as a secondary responsibility.

Position Details

• Salary range: $135,000 - $160,000
• Location: Hybrid (Boulder, CO)
• Full‑time
• Hybrid - 2 days in the office
• Reporting to: Vice President, Engineering

Primary Responsibilities

• Design architecture for scalable platform services.
• Lead implementation of back‑end systems in C#/.NET.
• Define API and service design patterns.
• Guide database architecture and performance optimization.
• Mentor engineers through design reviews and technical coaching.
• Contribute to JavaScript front‑end development when appropriate.
• Drive engineering best practices, testing, and operational excellence.
• Partner with Product and Engineering leadership on technical direction.
• Leverage AI‑assisted development tools to improve engineering velocity and quality.

Minimum Qualifications

• 7+ years of software engineering experience.
• Strong expertise in C#/.NET.
• Experience designing distributed systems and APIs.

  Preferred Qualifications

  • Experience with energy markets, settlements, or trading platforms.
  • Experience modernizing enterprise applications.
  • Experience with cloud‑native architectures.
  • Experience incorporating AI‑assisted development into engineering workflows.

  At Yes Energy, we value connecting directly with candidates. We kindly ask that third‑party recruiters and agencies not submit resumes, as we are not open to external recruiting partnerships.

  Compensation and Benefits

  We offer highly competitive salaries and real bonuses that are achievable and that you can impact. Our benefits package is also very competitive, including medical insurance, a 401(k) Plan with matching, flexible vacation, and flexible work schedules. Yes Energy encourages and funds investment in both formal and informal professional development.

  At Yes Energy, we are dedicated to building a diverse, inclusive, and authentic workplace. If you’re excited about this role but your experience doesn’t perfectly align with every qualification in the job description, we encourage you to apply anyway. You may be just the right candidate for this or other roles.

  In accordance with Colorado law, the range provided is Yes Energy’s reasonable estimate of the base compensation for this role. The actual amount may be higher or lower based on non‑discriminatory factors such as location, experience, knowledge, skills, and abilities.

  Yes Energy provides equal employment opportunities (EEO) to all employees and applicants for employment without regard to race, color, religion, sex, national origin, age, disability, or genetics. In addition to federal law requirements, Yes Energy complies with applicable state and local laws governing nondiscrimination in employment in every location where the company has facilities. This policy applies to all terms and conditions of employment, including recruiting, hiring, placement, promotion, termination, layoff, recall, transfer, leaves of absence, compensation, and training.