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3Degrees

Senior Product Engineer, Full Stack & AI, Climate Tech

3Degrees, San Francisco, California, United States, 94199

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Every day, we work together for what matters – bold, swift, and equitable climate action.

Scroll down the page to see all associated job requirements, and any responsibilities successful candidates can expect. ABOUT THE ROLE At 3Degrees, a Certified B Corporation driving climate action, we’re building the next generation of digital products that accelerate the energy transition. You’ll join a small, fast‑moving team that designs and ships modern SaaS applications with state‑of‑the‑art AI and agentic capabilities powering our environmental commodities business – from Energy Attribute Certificates (EACs) and carbon credits to supply chain reductions and clean fuel standards.

You’ll join as a founding member of a new agile unit within 3Degrees that is made up of technical leadership, execution, and product, which gives you the opportunity to shape what we build and how we work. Reporting to the Tech Lead, Next‑Gen Products, and working closely with our Head of Product, you’ll co‑own the end‑to‑end delivery of critical product slices – crafting intuitive UIs, designing resilient backends, and integrating modern services, while also bringing cutting‑edge AI functionality into our products. From prototype to production, reliability, safety, and measurable impact are non‑negotiables.

This is a role for builders who thrive at startup velocity inside an established company: you’ll move fast, learn new tools on the fly, and apply your creativity to solve hard problems. At the same time, you’ll have the chance to shape products that matter – ones that help the world decarbonize faster.

This is a full‑time role reporting to the Tech Lead, Next‑Gen Products. We value camaraderie, team collaboration, and the benefits of in‑person connection, while offering flexibility. For this role, we prefer candidates to join us in a voluntary, flexible hybrid work style in our San Francisco Bay Area office. We may also consider candidates who are able to join us at one of our office hubs in Portland, OR; Portland, ME; or New York, NY.

For exceptional remote candidates, we strongly prefer those located in states where we are currently eligible to hire: CA, OR, NY, WA, ME, TX, CO, MI, FL, MA, MN, VA, DC, GA, UT, and IL. While we prioritize candidates in, or open to relocating to, these states, we may consider outstanding remote candidates from other US states. Please note that hiring in a new state would involve evaluating the implications of establishing a new hiring presence there. Additionally, 3Degrees does not provide relocation assistance for this position.

Please Note: 3Degrees does not provide sponsorship or work authorization assistance; therefore, pre‑existing right‑to‑work status is a prerequisite to be considered for this position.

WHAT YOU'LL DO As the Senior Product Engineer, Full Stack & AI, you will be responsible for developing, testing, and shipping key digital products that support our environmental commodities business. Your responsibilities will include:

Full‑Stack SaaS Engineering

Design, build, and operate modern SaaS web applications end to end (frontend, backend, APIs, database, integrations)

Deliver production‑grade features that span UI, data, and infrastructure, from prototype to resilient MVP

Integrate common SaaS services (e.g. Stripe, Supabase, auth, analytics) to accelerate delivery

Balance speed and simplicity with reliability, scalability, and compliance

AI Product Engineering

Leverage AI in your own workflow to code faster, explore solutions, and sharpen ideas

Add AI functionality into our SaaS products: LLM‑driven features, retrieval‑augmented workflows, agentic patterns, and evaluation/guardrails

Instrument systems for observability; track latency, accuracy, and usage metrics to ensure safe and reliable AI behavior

Apply evaluation datasets and guardrails; implement abstain/escalation flows and drift monitoring to uphold quality

Frontend Craft

Build tasteful, intuitive UIs in frameworks like Next.js, even when a designer isn’t available

Use good product judgment to make interfaces feel polished, purposeful, and usable

Uphold accessibility, performance, and compliance standards

Product Delivery

Translate high‑level technical direction into executable designs and production code, surfacing trade‑offs early

Own vertical slices: integrate with internal systems and external services, de‑risk unknowns with spikes, and ship on a tight cadence

Co‑lead execution with the Tech Lead, driving toward MVP milestones and team KPIs (reliability, adoption, impact)

Architecture & Collaboration

Evolve flexible, composable architectures that interoperate with partner platforms and internal services

Communicate design decisions and trade‑offs clearly with technical and non‑technical stakeholders

Learning & Thought Partnership

Stay ahead of AI and software trends, bringing pragmatic tools and frameworks into the stack

Share learnings and patterns that increase team velocity and quality

Continuously find ways to accelerate our AI‑assisted product development

WHY JOIN US

Mission with Impact : Your work directly accelerates global climate action, helping businesses and countries hit sustainability targets

Cutting‑Edge Tech : You’ll work at the frontier of full‑stack SaaS + AI, building products that combine modern frameworks (Next.js, Supabase, cloud services) with LLMs, agentic workflows, and evaluation guardrails

Room to Shape : You’ll be a key voice in product decisions, working closely with our Tech Lead and Head of Product to influence architecture, direction, and execution

Best of Both Worlds : Enjoy the pace and autonomy of a startup backed by the stability and reach of an established B Corp

Culture of Learning : We move fast, experiment responsibly, and share learnings openly, with a focus on building products that are not just innovative, but safe, reliable, and impactful

ABOUT YOU You are a hands‑on product engineer with a strong track record of shipping modern SaaS web applications end to end. You thrive on building products that are both technically solid and delightful to use, and you’re just as comfortable designing a UI flow as you are modeling a database schema or hardening a backend service. You actively use AI in your own workflow and know how to responsibly integrate LLMs and agentic techniques into production‑grade products. You’re curious, pragmatic, and excited to apply your skills to climate tech with real‑world impact.

Skills & Mindset

Technical & Product Engineering

Track record of shipping full‑stack SaaS applications (frontend, backend, APIs, data, integrations) used in production by real users

Ability to go from zero to prototype quickly, then harden into a resilient MVP with tests, telemetry, and safe deployment practices

Strong fundamentals across APIs, data modeling, security, performance, CI/CD, and observability

Experience integrating LLMs, RAG, and guardrails into products, and monitoring AI features with metrics like latency, accuracy, and safety

Comfort making trade‑offs that balance time‑to‑value with reliability, security, and data integrity

Evidence of shortening the loop from idea → prototype → production, with telemetry guiding iteration

Product Taste & Frontend Craft

Strong eye for design and user experience; able to create polished, usable UIs without always relying on a dedicated designer

Knowledge of modern frameworks like Next.js and comfort working across the modern SaaS stack (e.g., Stripe, Supabase, auth, analytics, cloud services)

Domain & Collaboration

Interest in climate, energy, or environmental markets, with the ability to translate domain input into dependable software

Clear, proactive communicator who builds trust with engineers, product managers, and subject‑matter experts alike

Comfortable moving at startup velocity inside an established company, adapting quickly as requirements evolve

Education & Experience

Degree in Computer Science/Software Engineering or equivalent practical experience building and operating full‑stack, AI‑enabled SaaS products

HOW WE DEFINE SUCCESS This role is about co‑owning execution with the Tech Lead, taking product slices end to end, from concept to production, on an aggressive timeline. Success means moving at startup velocity inside an established company, balancing scrappiness with enterprise‑grade standards of safety, reliability, and measurable impact.

Within 30 days

Building a deep understanding of our business, domain, and digital product ecosystem

Establishing strong partnerships across engineering, product, and sustainability

Delivering a thin vertical slice from backend to UI that proves end‑to‑end viability and unblocks rapid iteration

Contributing to a focused plan for an early MVP that balances ambition with realistic delivery

Within 90 days

Owning the design and delivery of prototypes and features that are actively used by real users or pilot partners

Demonstrating measurable impact (e.g., efficiency, accuracy, adoption) through telemetry and feedback

Translating early learnings into a credible MVP roadmap and helping de‑risk unknowns along the way

Within 1 year

Co‑delivering a production‑ready MVP and evolving it into scalable products with tangible business and climate impact

Proving ROI through live metrics and adoption, validated by customers and stakeholders

Consistently surfacing and delivering high‑impact opportunities with founder‑level ownership and urgency

COMPENSATION & BENEFITS

Compensation:

The starting base salary for this position is $134,000 to $181,000 in the US. Base pay is dependent upon many factors such as location, transferable or job‑related skills, work experience, relevant training, business needs, and market demands.

Benefits:

This position is eligible for a benefits package that includes medical, dental, vision, 401k, flexible paid time off, and more. Additional information regarding the benefits available for this position can be found here.

Supplemental Pay:

This position may be eligible to participate in discretionary bonus programs based on personal, department and company goals.

OUR COMMITMENT TO DIVERSITY, INCLUSION AND EQUITY 3Degrees is an equal opportunity employer. We promote, value, and thrive with a diverse and inclusive team. Different perspectives contribute to better solutions and this makes us stronger every day. We are proud to welcome all people of race, color, religion, national origin, gender identity, age, sex, marital status, ancestry, disability, veteran status, sexual orientation or any other category protected by law.

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