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Senior Full Stack Engineer

Unit21
$180,000 - $200,000
San Francisco, California
Full time
May 30, 2025

About the role:

We are looking for a full stack engineer who is passionate about catching fraud. We build products that help our customers catch fraud and keep their customers money safe. This requires careful thought, high creativity, and a deep understanding of complex systems that monitors every single transaction efficiently without interruptions.

What you will be doing:

  Design and build high-performance Case Management products with intuitive user interfaces prioritizing scalability, reliability, and efficiency.

  Collaborate with product and design to refine user experiences

  Reviewing pull requests, internal and external to team

  Innovating on creative solutions to difficult problems

  Work with related data infrastructure technologies

  Developing and deploying efficient and elegant code

What we're looking for:

  BS, MS or Ph.D in Computer Science, Engineering, Mathematics, Statistics, Physics, or related field is required.

  5+ years of experience in Python or other Object-Oriented programming language.

  3+ years of experience with React and Material UI

  3+ years of experience working with Data Warehouses such as Snowflake, Databricks or Redshift

  Experience in building and managing distributed systems.

  Experience with AWS(cloud) and Terraform(IAAS)

  Experience in developing and optimizing end-to-end APIs, data-flows, SQL queries and infrastructure for consumer or enterprise products.

  Advanced knowledge of software engineering principles including software design, source control management, build processes, automated deployments, code reviews, testing methods.

  Hustle, curiosity, humility

Bonus Points!

Experience managing large-scale critical production systems with minimum SLAs of 4 9's

Experience with Apache Spark

Compensation:


The standard base pay range for this role is $180,000 - $200,000 Annually. This base pay range does not include variable compensation including potential commissions, bonuses or other financial or equity incentives.


Unit21 is an equal opportunity employer, we encourage all to apply, even if you do not meet each requirement above. We are building a diverse, inclusive workforce and hope you will join us!


What we can offer you:


Competitive salary and pre-IPO stock options


100% company-paid medical, dental and vision insurance (for employee)


Optional HSA and FSA medical reimbursement accounts


Unlimited paid time off


Generous leave programs for life events


401(k)


Charity matching


Annual Learning & Development stipend


One-time Home office set-up stipend


Commuter benefits


Happy hours and team-building events


Great office space in the San Francisco Financial District


Fully stocked kitchen


Lunch provided in SF office multiple times a week


A great company culture with a strong emphasis on diversity, equity and inclusion


About Unit21:


Unit21 stops bad actors by leveraging data to deliver justice and safety in the world. We protect businesses against adversaries engaging in money laundering, fraud, and other sophisticated risks by offering no-code infrastructure to model, detect, and remediate suspicious activity. Our customers range from large Fortune 500 companies to high-potential, pre-launch startups. We have reported over USD $2 billion in fraud and laundered money to the US government using our software.


We are a rapidly growing Series C startup, having raised close to $100m from Google, Tiger Global, ICONIQ Capital, Jack Dorsey, Diane Greene, and other leading VCs. Our team believes deeply in fostering individual ownership, iterative product development, and empathetic communication. There are many challenging problems to solve in this industry, and a huge opportunity for our software to empower companies to define a new standard of eliminating bad behavior on their platforms.


We encourage people of all backgrounds to apply. Unit21 is committed to creating an inclusive culture, and we celebrate diversity of all kinds.



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