Backend Engineer

Themis•New York, NY

10d•Remote

About The Position

We’re looking for a Backend Engineer to help build and scale the secure, reliable systems that power the Themis governance, risk, and compliance platform. In this role, you’ll work on a standard modern Rails stack, including Ruby on Rails, PostgreSQL, and Redis, building the APIs, services, background jobs, and data models behind our product. You’ll solve for the reliability, security, performance, and data integrity that financial institutions and fintechs depend on every day. The ideal candidate has strong Rails experience, writes robust and well-tested code, thinks carefully about data and edge cases, and takes ownership of the systems they build. You understand that in a regulated domain, correctness, security, and reliability are not afterthoughts. They are part of the product.

Requirements

Strong professional experience building production applications with Ruby on Rails or a similar modern backend framework
Experience working with PostgreSQL or another relational database, including data modeling and query performance
Experience with Redis, background jobs, caching, queues, or similar backend infrastructure
Strong experience designing and building APIs
Experience writing tested, maintainable, production-grade code
Strong understanding of security, reliability, performance, and data integrity fundamentals
Ability to own backend systems end to end and manage complexity thoughtfully
Strong communication skills and comfort working closely with product, frontend, and other engineering team members

Nice To Haves

Deep experience with Ruby on Rails in a production SaaS environment
Experience scaling Rails applications and improving backend performance
Experience with background job frameworks, async processing, queues, or event-driven patterns
Experience with cloud platforms such as AWS, GCP, or Azure
Experience handling sensitive data and supporting compliance, audit, or security requirements
Experience in financial services, fintech, GRC, or another regulated domain
Experience working in a startup or high-growth company

Responsibilities

Design, build, and maintain backend systems on a modern Rails stack
Work with Ruby on Rails, PostgreSQL, Redis, background jobs, APIs, and service integrations
Own features end to end, from design and implementation through testing and deployment
Build secure, reliable APIs and backend workflows that support complex GRC use cases
Design data models and database structures that prioritize integrity, performance, and long-term maintainability
Collaborate with frontend engineers to design clean, well-documented APIs
Write clean, well-tested, maintainable Rails code
Contribute to architecture decisions as the platform scales
Identify and address performance bottlenecks, reliability risks, and data integrity issues
Participate in code reviews and help raise the engineering bar
Improve backend patterns, tooling, and development practices over time
Apply security and data-handling best practices appropriate to a regulated domain
Partner with product to translate customer needs into thoughtful technical solutions
Support audit, compliance, and data-integrity requirements relevant to our customers
Help maintain systems that customers can trust for critical governance, risk, and compliance workflows