Senior Software Engineer

Sol Systems is seeking a full-time, full-stack software engineer to help lead the development of our enterprise software systems as we continue to grow our business in the renewable energy space.  The ideal candidate would have a proven track record helping to lead a software development team in architecting, building, and deploying custom web applications, with technical experience working at all levels of the development stack, from server configuration to user interface development, and the soft skills to support discovery and acceptance conversations with non-technical stakeholders and coaching other members of team. This role will report to the Director of Software Development and will support our Environmental Commodities Management division. 

Sol Systems is a leading solar energy firm based in Washington, DC, dedicated to building a more sustainable future. Founded in 2008, the company deploys renewable energy infrastructure across the United States, with a specific focus on ensuring that these projects have a positive economic impact on the communities in which they operate. The company has financed or developed well over $2 billion of solar energy assets to date. We work with some of the largest corporations in the world to achieve a carbon-free and sustainable future. Sol has been founder-led throughout its 16 years of operations and is backed by KKR, one of the largest private equity firms in the world.

Sol Environmental Commodities Management (ECM), is the oldest division at Sol, founded in 2008. The ECM team is an innovative market maker and has helped create multiple state solar renewable energy credit (SREC) markets through the Mid-Atlantic and Northeast.  The ECM team has also raised capital with institutional and individual investors for solar projects and energy credit investing. The team manages multiple environmental commodity portfolios and maintains one of the oldest and largest REC aggregation businesses in the U.S

Key Responsibilities:

• Help lead full-stack Ruby on Rails development for scalable internal and customer-facing software applications.
• Modernize legacy codebases, including rewriting and refactoring as needed, optimizing for performance, scalability, and maintainability.
• Drive backend automation efforts that include integrations with a variety of external systems (SOAP/REST APIs).
• Collaborate with stakeholders to fully understand business problems and translate related needs into technical solutions.
• Contribute to the full software development lifecycle in an Agile/Scrum environment, driving initiatives from concept to delivery.
• Champion best practices in software design, testing, and development across the organization, influencing technical decisions and product direction.
• Mentor and support fellow engineers in their professional development.

A successful candidate will have the following qualifications:

• Bachelor’s degree in Computer Science, Computer Engineering, or related field, or equivalent experience
• 6-10 years of professional software development experience
• 5+ years of full-stack Ruby on Rails development (or equivalent)  building scalable customer-facing and back-office applications, preferably supporting a large volume of users of varying levels of sophistication.
• Significant experience working with and architecting databases schemas, optimizing for large-scale operations.
• Expertise in deploying automated testing frameworks and effective test design and implementation.
• Comfort deploying applications to the cloud, preferably to AWS, and related DevOps principles and best practices.
• Demonstrable success maintaining and refactoring large legacy codebases.
• Humble, strong communicator with cross-functional collaboration skills.
• Leadership in mentoring engineers and promoting continuous learning.
• Efficient problem-solver, delivering high-quality solutions in fast-paced environments.
• Constructive feedback provider, focused on team improvement.
• Passionate about sustainability and technical innovation.

Location & Hours: This is a full-time role and will be based in our Washington, DC office.

Commitment & Compensation: Compensation will be commensurate with experience. In addition, Sol Systems provides health insurance, retirement benefits, partial fitness reimbursement, education benefits, parental leave, paid vacation, sick and federal holidays, and the opportunity to work in a unique and dynamic environment.

To Apply: Please submit a resume, cover letter and salary requirements.

Deadline: We hope to hire for this position immediately and will review applicants on a rolling basis.

Sol Systems is an equal-opportunity employer, and does not discriminate based on gender, race, ethnicity, orientation, creed, or other traits. Sol Systems supports and encourages candidates of all backgrounds to apply.