Ruby Software Engineer III

Know Ink, LLC•Creve Coeur, MO

1d•Hybrid

About The Position

KNOWiNK builds election technology that keeps democracy running. Our platform powers poll worker check-in, voter verification, and election management for jurisdictions across the country. We're a tight-knit team that cares deeply about what we build, because what we build matters. If you want your work to actually mean something, you're in the right place. We're looking for a mid-level Ruby developer to join our engineering team and help build and maintain the software that powers elections. You'll be working on real, meaningful problems, complex data workflows, client-facing tooling, and backend systems that have to work flawlessly when it counts most. You'll collaborate closely with cross-functional teammates and have real ownership of your work from day one. This is a hybrid role, three days a week in our St. Louis office, two days remote. We genuinely like each other here, so the in-office days don't feel like a punishment.

Requirements

3-5 years of professional Ruby on Rails experience
Solid understanding of RESTful API design and implementation
Comfortable with relational databases (PostgreSQL preferred) and writing efficient queries
Familiar with Git and collaborative development workflows
Experience with test-driven development (RSpec, Minitest, or similar)
Strong communication skills, you can explain what you're building and why
Self-directed and comfortable asking for help when you need it
Genuinely curious about how things work and how to make them better

Nice To Haves

Experience with JavaScript/React or Vue on the frontend
Background in govtech, civic tech, or working in regulated industries
Familiarity with background job processing (Sidekiq, Delayed Job, etc.)
Docker or containerized development environment experience
Exposure to CI/CD pipelines

Responsibilities

Design, build, and maintain Ruby/Rails applications that are reliable, scalable, and clean
Collaborate with product, QA, and client-facing teams to translate requirements into solid technical solutions
Write and maintain automated tests, we take quality seriously
Participate in code reviews and contribute to engineering best practices
Troubleshoot and debug production issues, then actually fix the root cause
Contribute to technical documentation and keep it current
Work within Agile/Scrum workflows and stay in sync with sprint goals
Bring your ideas, we want engineers who think, not just execute