At MassMutual Ventures, we are fortunate to have been early and long-term partners to our portfolio of category-defining businesses that are located across the globe. Learn more about their available opportunities below.
Crux
Remote (US)
Full time
Engineering
Crux is the capital platform for the clean economy. We modernize capital raising and deployment for clean energy and critical infrastructure with solutions across advisory, investments, technology, and intelligence.
Our team of 95+ is composed of experts in energy, tax, finance, government, and technology. We have raised $77 million in capital from some of the best investors, including Andreessen Horowitz, Lowercarbon Capital, New System Ventures, Overture, Ardent Venture Partners, QED, Canapi, and others. These funds are joined by strategic investors including Pattern Energy, Clearway Energy, EDF Renewables, Intersect Power, LS Power, Orsted, Hartree Partners, Liberty Mutual Strategic Ventures, MassMutual Ventures, and OMERS Ventures.
Energy demand is growing for the first time in decades, driving an urgent need for more affordable and reliable electricity. More electricity requires new clean energy infrastructure and strong domestic supply chains for minerals and components — as well as large amounts of capital.
Traditional project financing is opaque, fragmented, and analog. At Crux, we’re changing that. Through unmatched insights and expertise, white-glove service, purpose-built tools, and risk underwriting, we power a more prosperous, clean, and secure energy future.
We are scaling quickly and looking for team members who are eager to combine deep expertise with an AI- and tech-forward mindset.
The traditional process for financing clean energy is manual, opaque, and slow. We’ve built products that solve part of that problem — now we’re expanding their breadth and depth with AI. We’re hiring our first AI Product Engineer to work hand-in-hand with customers, product, commercial, and legal teams to reimagine the way transactions happen in clean energy finance, starting with diligence.
You won’t just be building features — you’ll be co-designing the processes and systems that define how we ship high-quality AI products at Crux.
Much of this framework doesn’t exist yet — and you’ll help invent it using first principles.
Collaborate directly with customers
Build products from 0 -> 1
Pick the tools & frameworks we use
Learn an insane amount about the nuts & bolts of clean energy finance
Raise the bar for our engineering culture
4+ years of full-stack software engineering experience and you can build products end-to-end (frontend + backend)
Bonus: fluency in NextJS + React + Typescript stack
Also bonus: you are comfortable making UX decisions
Proven experience building and shipping user-facing LLM products
Bonus: you have iterated on a product through evals & CI/CD
Ability to thrive in a fast-paced environment
Bonus: you love working at startups
Excellent communication skills (oral & written)
Bonus: also excellent at communicating with AI (prompting)
Enjoy hackathons & building side projects
Have experience building AI agents that work
Previously founded a startup OR worked at a rocket ship
Love taking products from 0 -> 1
Can do most things in half the time that most people think possible
Can quickly find the 80/20 solution and move on
Can unblock yourself and rally others
Backing, traction & brand:
We have raised $77 million in capital from some of the best venture and strategic investors, including Andreessen Horowitz, Lowercarbon Capital, New System Ventures, Ardent Venture Partners, Pattern, Clearway, EDFR, Intersect, LS Power, Orsted, Hartree Partners, Liberty Mutual Strategic Ventures, MassMutual Ventures, and OMERS Ventures.
Have been profitable and are growing exponentially
We have closed over 120+ transactions in just the last 2 years, facilitating billions of dollars of capital flowing into renewables projects
Culture & working dynamic
Remote-first operating model: Work from anywhere in the US and Canada, or work out of our optional offices in DC (open), NYC (opening Q1’26). Optional co-working opportunities with co-workers in Bay Area, Seattle, Denver, Boston, LA, and beyond.
High growth & high ownership culture: We grow quickly by giving extremely talented people a lot of responsibility.
Best of financial services & technology: We have brought together a team that are experts in clean energy finance, and the best technologies. Use your expertise while getting to be on the cutting edge of applying AI to your day and your clients’ experience.
Regular team offsites: We sustain culture by bringing the entire company together 3 times a year. Individual teams may also meet up more frequently.
Benefits
Healthcare: We cover 100% of premiums for employees with a variety of plans on Aetna (nationwide) and Kaiser (WA and California) and subsidize 70% for dependents (total as a group), if relevant.
Dental & vision: We cover 100% of premiums for employees and 50% for dependents (each), if relevant.
Holidays: 10 company holidays per year.
Paid time off: 20 days per year.
401k: We support a 401k account but don't have a matching program set up at this time (typical for an early-stage startup).
Parental leave: 16 weeks for birthing parents and 12 weeks for non-birthing parents.
Compensation:
Base Compensation: $150,000 - $250,000 depending on leveling/years of experience, not reflecting value of equity.
Company wide bonus tied to revenue goals.
Stock options in a rapidly growing company.
Values
Care for each other: We want to work on a team where people support each other - in their growth, in their work, and towards our shared mission. When we do that, we have fun.
Build and improve rapidly: We move quickly. To do that, we focus, consistently ask ourselves if we are prioritizing the right things, and execute them as best as possible.
Focus unremittingly on customers: Our first obligation is to our customers and partners, and we keep their needs front and center in everything we do.
Demonstrate ownership: We are all owners of Crux. This is our team, our company, our product and we show that to each other.
Convene a team that reflects the breadth of experiences in the country: We’re building a team with a wide range of backgrounds and a culture where everyone can thrive.
We provide equal employment opportunities to all applicants without regard to race, color, religion, age, sex, national origin, disability status, genetics, protected veteran status, sexual orientation, gender identity or expression, or any other characteristic protected by law.