Full Stack Engineer

Start With Level, Inc.; Boston (MA); On-site; USD 100,000 - 140,000; Full time

Benefits offered by this job

Competitive salary

Health, dental, and vision insurance

Unlimited PTO

Flexible hours

New equipment

Regular off-sites

Job summary

A fast-growing startup is seeking a Full Stack Engineer for their Boston office. This role involves building features across the stack, designing AI-driven workflows, and collaborating closely with the founding team. The ideal candidate has over 7 years of software engineering experience, a generalist mindset, and excellent communication skills. The position offers competitive salary, health benefits, unlimited PTO, and the opportunity to shape the product and company culture.

Qualifications

• 7+ years of software engineering experience, ideally in startup environments.
• Ability to design systems, not just implement them.
• Excellent communication skills to articulate technical tradeoffs.
• Comfort with ambiguity and ownership mindset.

Responsibilities

• Build features across the stack based on business priorities.
• Design and implement AI/LLM-driven workflows.
• Translate ambiguous requirements into clear software.
• Collaborate closely with founding team to shape product direction.

Skills

Software engineering experience

System design

Communication skills

Pragmatism

Generalist mindset

Tools

Python

React/Nextjs

AWS Lambda

PostgreSQL

Amazon DynamoDB

Job description

About us

We’re a fast-growing startup rethinking how back-office work gets done in financial services. Our first product helps automotive lenders resolve insurance claims more effectively, delivering better outcomes for both lenders and consumers through automation and AI. Small improvements can unlock significant value for our customers. Along the way, we’ve helped consumers avoid millions in debt.

Our work spans a wide range of engineering challenges — from building core application features and integrations, to designing reliable infrastructure, to creating AI/LLM-driven workflows that automate complex processes.

We’re an early stage venture-backed startup and scaling quickly. We’re scrappy, intentional, and focused on solving real problems for our customers. We bias toward shipping, learning fast, and building solutions that work in the real world.

Our headquarters is in New York City, and our team is distributed.

We’re backed by leading investors including 81 Collection, Better Tomorrow Ventures and CapitalOneVentures.

The role

We’re looking for a Full Stack Engineer to join our team. You’ll work across the stack, own projects end-to-end, and make foundational technical decisions that will shape our product and culture for years to come.

Some of your work will involve AI/LLM-based systems, but just as much will involve building the surrounding product and infrastructure that makes those systems valuable to our customers. If you enjoy tackling different kinds of problems, moving quickly, and taking ownership, this role is for you.

What you’ll do

• Build features across the stack based on your strengths and the business’s highest priorities: backend services, frontend interfaces, integrations, agents and infrastructure.
• Design and implement AI/LLM-driven workflows as part of our automation platform.
• Translate ambiguous requirements into clear, functioning software.
• Balance speed with technical rigor, knowing when to optimize for learning and when to invest in durability.
• Help define and evolve our engineering practices and technical culture.
• Collaborate closely with the founding team and customers to shape product direction.

What we’re looking for

• 7+ years of software engineering experience, ideally with exposure to fast-moving or startup environments.
• Strong technical depth: you can design systems, not just implement them.
• A generalist mindset, with the ability and confidence to work across multiple parts of the stack.
• Pragmatism: you can ship quickly without sacrificing critical quality.
• Excellent communication skills, with the ability to articulate technical tradeoffs clearly.
• Comfort with ambiguity, and a bias toward ownership and action.

Bonus points for:

• Experience working with LLMs or building AI-driven applications.
• Background in fintech, insurance, or workflow-heavy enterprise products.
• Prior experience as an early-stage engineer or founder
• Contributions to open-source or research projects.

Stack:

• Cloud & Infrastructure AWS
  • AWS Lambda
  • Amazon ECS
• Backend
  • Python
  • FastAPI
• Databases & Storage
  • Amazon DynamoDB
  • PostgreSQL
  • S3
• Frontend
  • React/Nextjs
  • Typescript

Our values

• Customer-first – we focus on solving real customer problems.
• Bias to action – more doing and fast learning help us deliver the right solutions.
• Ownership – no silos, no excuses: we all take responsibility.
• Strong opinions, open minds – clear points of view, constructive debate, open to better ideas, learning from each other

Compensation & benefits

• Competitive salary and meaningful equity.
• Health, dental, and vision insurance.
• Unlimited PTO and flexible hours.
• New equipment to support your best work.
• Regular off-sites and team travel budget to get together in person
• The opportunity to play a foundational role in shaping both the product and the company.

📍 HQ in NYC, distributed team. This role is for our Boston, MA office.