Full Stack Software Engineer (Tax)

About Collective:

Collective is on a mission to redefine the way businesses-of-one work. Our technology and team of trusted advisors help members achieve financial independence by taking care of everything from business incorporation to accounting, bookkeeping, tax services, and access to a thriving community, all in one integrated platform. We believe in empowering self-employed people to enjoy the same tax savings that big companies get, so they can focus on their passion, not paperwork.

Featured in Forbes, Business Insider, Yahoo, Bloomberg, Financial Times, TechCrunch, and more. We are backed by General Catalyst, Sound Ventures (Ashton Kutcher and Guy Oseary), QED Investors, Google’s Gradient Ventures, Expa, and other investors who have financed iconic companies like YouTube, Substack, Twitch, Box, Hims, Instacart, and Lyft.

About the role:

Collective is seeking a software engineer to help build the future of our tax products. This is the core system that ensures our members file accurately and on time.

For a business, taxes aren't a seasonal event - they're a year-round engine for savings and operational efficiency. You will build the core systems that empower our members to operate correctly, confidently, and strategically every single day, not just during filing season.

This role blends product engineering with operational leverage. You will build internal tools that make our tax workflows faster and more scalable, reduce friction for our accountants and tax professionals, and ensure accuracy at scale. Outside of filing season, you will explore new capabilities, better automation, and AI-driven experiences for solopreneurs.

We are investing heavily in intelligence across tax. The systems you build will allow the tax business to grow significantly.

What you'll do:

• Build end-to-end product features in close partnership with Tax product and design teams.

• Write high-quality, reliable code that’s easy to maintain and scale.

• Collaborate with the team to make key architectural decisions that drive scalability.

• Lead by example, foster a culture of egoless learning, and mentor other engineers.

• Approach problems with a strong product mindset, balancing technical decisions with user impact.

• Take extreme ownership across the full lifecycle: design, execution, launch, and post-production support.

• Drive initiatives that grow our member base to the next level of scale.

• Enhance customer activation flows to ensure a smooth onboarding experience.

Tech stack & environment:

• Core: Python (Django/FastAPI), React, TypeScript.

• Data/Infra: PostgreSQL, Redis, AWS, Docker/Kubernetes.

• AI/ML (Emerging): LLM integration (OpenAI/Anthropic), LangChain/LangGraph, Vector Databases, and Agentic frameworks.

What you'll bring:

• 3+ years of professional working experience in full-stack development with a strong focus on backend systems (e.g., Python, Django), and the flexibility to dive into frontend or other areas as needed to move the product forward.

• Proficiency in Python and PostgreSQL, with solid familiarity in AWS technologies, React, and Next.js.

• Curiosity to explore new technologies, with the ability to thoughtfully leverage AI to enhance product experiences while understanding its limitations.

• A strong sense of urgency and ownership in driving projects from design through execution and support.

• Experience with programming languages commonly used in AI/ML (e.g., Python) and web development.

• Strong communication and interpersonal skills.

What we offer:

• Hybrid Work Model: Based in San Francisco with a balance of in-office and remote flexibility

• Fresh Lunch: Provided on in-office days

• Commuter Support: $150 monthly reimbursement for transit expenses

• Health & Wellness: $200 quarterly reimbursement to support your well-being

• Time Off: Flexible PTO plus 14 company holidays

• Comprehensive Coverage: 100% medical, dental, and vision for employees; 75% coverage for dependents

• Parental Leave: 16 weeks fully paid

• Retirement & Ownership: 401k plan plus an equity package

• Team Connection: Quarterly virtual events and an annual in-person summit

• Compensation Range: $175,000 to $190,000