Demo

Senior Full Stack Engineer

flourish
York, NY Full Time
POSTED ON 2/17/2026 CLOSED ON 4/17/2026

What are the responsibilities and job description for the Senior Full Stack Engineer position at flourish?

Since 2017, Flourish has been on a mission to help financial advisors evolve from holistic advice to holistic implementation to more fully serve their clients and achieve better outcomes. We focus on independent Registered Investment Advisors (RIAs), delivering financial products that advisors can’t easily access today through beautiful, scalable, and easy-to-use technology.

Today, we work with over 1,000 RIAs that collectively represent more than $2.6T in assets under management across two products — Flourish Annuities and Flourish Cash — and with our recent acquisition of Sora Finance, we’ll be adding a lending offering in 2026. Headquartered in New York City, we are an independently-operating, wholly-owned subsidiary of MassMutual Life Insurance Company.

Read on if you are interested in joining a small, highly-collaborative, rapidly-growing startup—backed by the support and stability of a Fortune 500 company.

About You

You are an engineer, first and foremost. You can rapidly build products that will delight users, with best practices in terms of both development and security. You thrive in a work environment that requires strong problem solving skills and independent self-direction, coupled with an aptitude for team collaboration and open communication. You are a strong communicator, explaining complex technical concepts to designers, support, and other engineers is no problem for you.

You possess strong computer science fundamentals: data structures, algorithms, programming languages, distributed systems, and information retrieval. And finally, your accomplishments are much more important than your paper credentials.

About the Role

Our mission is to provide innovative access to financial products that help RIAs secure their clients’ financial futures and the Flourish Engineers play a key role in doing just that. We’re seeking backend and full-stack engineers to help build a scalable platform. Cross functional collaboration is key to success and you will collaborate with teams across the organization, including Product, Design, Operations and Risk.

You will develop a deep understanding of at least one business line and partner with product managers, business leaders, and fellow engineers to solve complex business problems with software and deliver commercially feasible and viable solutions. Working with other engineers, you will bring ideas from the whiteboard to reality, making key architectural decisions, extending existing features, designing and developing entirely new services and applications, and performing code and architecture reviews. You have deep knowledge of distributed systems and application service frameworks, and are excited to work throughout the tech-stack to deliver a delightful experience for customers and coworkers.

Minimum Qualifications

  • Bachelor's Degree in Computer Science, Math, Physics, or Engineering or equivalent working experience
  • 5 years of software engineering experience
  • Strong experience designing and building distributed systems
  • 5 years experience programming in Python, Java, Kotlin, or TypeScript
    Solid understanding of modern database technology (Redis, Postgres, RedShift, BigQuery)
  • Ability to design intuitive and performant RESTful APIs
  • Ability to work independently and as part of a fast moving team
  • Ready to learn, but just as ready to teach
  • Due to the nature of this position, as part of the background check process, candidates must be able to pass a fingerprint background check to qualify as a fingerprinted person under FINRA. For roles requiring registration, additional regulatory screenings may apply, including a review of Form U5 disclosures and other relevant licensing information.

Preferred Qualifications

  • MS or PhD in Computer Science, Math, Physics or Engineering
  • Understanding of common SSO protocols (OAuth, OIDC, SAML)
  • Pandas/SciPy/Django experience
  • NoSQL experience (We use DynamoDB and Redis)
  • Docker/Kubernetes experience
  • Open source contributions
  • GraphQL experience (We use Apollo Typescript)
  • Interest in financial planning and fintech/insurtech

At Flourish, we focus on ensuring fair, equitable pay by providing competitive salaries, along with bonus and incentive opportunities and benefits for all employees.

Base Salary Range: $167,800 - $220,200 plus bonus

Disclosures:

All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability or protected veteran status.

Salary : $2 - $1,000

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