Rejobs
Reunion
Reunion
Company · 7 open jobs

Senior Fullstack Software Engineer

Join Reunion as a Senior Fullstack Software Engineer in Seattle, San Francisco, Los Angeles, or Denver. Develop scalable AWS backend and Next.js front-end solutions for clean energy compliance software. Enjoy unlimited PTO, full medical coverage, and stock options while driving climate impact.

Remote Full time UTC-08:00 – UTC-07:00 Updated today

Applies on jobs.dover.com

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About the role

In 2025, we launched Reunion PWA, a software solution that helps developers comply with prevailing wage and apprenticeship (PWA) requirements to unlock the full value of clean energy tax credits. Reunion PWA is rapidly gaining traction in the market, and we're growing our team to accelerate adoption and expand to additional compliance offerings. Join us in the fight against climate change by helping renewable energy developers build faster!

This role will have an immediate impact at a fast-scaling software startup, helping build and adapt systems and processes amid rapid growth. As a senior engineer, you'll enjoy a high degree of autonomy and trust. You will be tasked with developing solutions for complex business problems by collaborating directly with Reunion's clients and our non-technical team members. Your responsibilities will include implementing backend services using AWS technologies, developing user-friendly front-end components, and ensuring the scalability and efficiency of our serverless architecture and Next.js application. This role offers a challenging yet rewarding environment where you will be able to share your expertise with junior team members while collaborating with our growing engineering team and helping to develop our engineering culture. If you're passionate about technology and enjoy solving complex problems, we'd love for you to join us on this exciting journey!

What You'll Do

  • Collaborate with cross-functional teams to design, develop, and deploy high-quality software solutions to ensure we provide the best possible product to our customers.
  • Architect, implement, and maintain backend services using AWS services such as CloudFormation, Amplify, Lambda, RDS, Cognito, CloudFront, S3, and Serverless Framework.
  • Develop and maintain a robust, scalable, and efficient serverless architecture.
  • Work with testing frameworks and CI/CD tools like Jest and GitHub Actions.
  • Utilize Turborepo, Next.js, JavaScript, TypeScript, React, and ShadCN to build front-end applications that interface seamlessly with backend systems.
  • Build robust data scrapers to create proprietary compliance databases and onboard customer data via data integrations
  • Identify opportunities to automate audit processes using AI agents
  • Work through problems with your team, roll up your sleeves, form an opinion, and advocate for engineering-specific roadmap items.

What You'll Need

  • Bachelor's degree in a technical field (Engineering or Computer Science) or equivalent work experience.
  • Minimum of 5 years of experience as a Full Stack Engineer.
  • Proficiency in AWS services, including CloudFormation, Lambda, RDS, Elasticache, Cognito, CloudFront, and S3.
  • Strong expertise with the Serverless Framework.
  • Extensive experience with JavaScript, TypeScript, and React.
  • Experience with infrastructure-as-code, configuration management, and CI/CD pipelines.
  • Proficiency in Next.js.
  • Familiarity with Jira (or similar tool) for task management.
  • Strong problem-solving and communication skills.
  • You are eager to contribute to Reunion's climate-focused renewable energy mission.
  • You have a passion for collaboration and a history of establishing great relationships with design and product management teams across time zones.
  • You are curious about constantly learning new things, and you enjoy working collaboratively in a fast-paced startup environment.
  • You have a commitment to technical excellence, enjoy maintaining a high level of code quality & consistency, and you're passionate about shipping code quickly.
  • You are an excellent oral and written communicator.

NOTE: Reunion is an equal-opportunity employer. You're encouraged to apply even if your experience doesn't line up exactly with the job description.

Nice to Haves

  • Experience with developing products in the renewable energy or real estate spaces
  • Experience working on online marketplace or auction mechanisms
  • Experience with Turborepo
  • Experience with large-scale data engineering
  • Experience building data pipelines or web scraping
  • Interest in AI agent frameworks
  • Experience in building & architecting a software product from scratch

Location

  • We are a remote-first company with hubs in Chicago, IL, Seattle, WA, San Francisco, CA, and Denver, CO.

Our benefits

  • 100% medical, dental & vision insurance coverage for you + partially covered for your dependents
  • Unlimited PTO
  • WFH stipend to support your home office needs
  • Competitive Salary
  • Stock Options

Pay & benefits

Health insurance Equity Paid time off Commuter benefits

Typical pay for similar roles

Estimate
US$140,000–190,000 annually
Senior · Software Engineering · United States · 104 similar jobs

The middle half of pay advertised on Rejobs for this group over the last 24 months. This employer has not stated a salary.

About this role

Posted
4 Nov 2026
Updated
4 Nov 2026
Job type
Full time
Workplace
Remote
Sectors
Working hours
UTC-08:00 – UTC-07:00
Experience
Mid level
LinkedInReunion

About Reunion

Company Overview

Reunion Infrastructure

San Francisco, United States

2022

Approximately 50-100 employees (source: linkedin.com). Revenue of $1 million to $5 million in 2023 (source: linkedin.com).

What They Do

Reunion operates as a digital marketplace for clean energy tax credits, primarily facilitating the purchase and sale of tax credits generated by renewable energy projects (source: linkedin.com). The company focuses on tax credit transferability, a mechanism enabled by the 2022 Inflation Reduction Act that allows entities to transfer unused tax credits to other parties (source: linkedin.com). Their platform serves various renewable energy projects, including solar, wind, battery storage, and geothermal energy, supporting over eight project technologies (source: linkedin.com). Reunion's core offering includes identifying tax credit opportunities, providing market data, conducting due diligence, negotiating contracts, and offering compliance software, emphasizing a hands-on approach to transactions (source: linkedin.com). Recent innovations include producing diligence memos within one week of signing a term sheet to expedite buyer decision-making (source: linkedin.com).

Projects & Track Record

Reunion has led over $7 billion in tax credit transfers since 2024, facilitating over $3.5 billion specifically in 2024 alone (source: linkedin.com). The company played a key role in three of the largest tax credit transfers of 2024, including the sale of up to $870 million in 45X credits from First Solar to Visa (source: linkedin.com). Reunion has also been involved in some of the industry's most complex transactions, including multiple deals exceeding $1 billion in volume (source: linkedin.com). While specific client relationships are not fully disclosed, the company has highlighted its work with Fortune 1000 corporations and leading clean energy developers, showcasing its significant impact in the renewable energy finance sector (source: linkedin.com).

Recent Developments

2024 was characterized as a "breakout year" for Reunion, with the company facilitating over $3.5 billion in tax credit transfers with a small but dedicated team (source: linkedin.com). The company announced plans to double its headcount in 2025, driven by growth in its core tax credit transfer business (source: linkedin.com). Additionally, Reunion is developing new software products aimed at improving the tax credit transfer process, with plans to launch these innovations in early 2025 (source: linkedin.com). Despite policy uncertainties, a survey conducted by Reunion found that most clients had not altered their tax credit purchase plans for 2025, indicating strong market confidence (source: linkedin.com).

Working There

Reunion describes itself as a team of "technology and clean energy finance experts" (source: linkedin.com). The company likely has roles spanning software engineering, transaction management, sales, compliance, and customer success, with plans to actively hire across multiple functions as it doubles its headcount in 2025 (source: linkedin.com). The founders emphasize a collaborative culture rooted in mutual respect and a shared commitment to tackling challenges in the clean energy sector (source: linkedin.com). While specific benefits and compensation details are not documented, the company’s growth trajectory suggests a dynamic work environment focused on execution and impact (source: linkedin.com).

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