Full-Stack Engineer (Rust)

Our engineers combine Computer Science fundamentals, with a software development principled approach that sets a high bar for software quality. We're pragmatic, quality-driven, and deliberate about the tools and practices we adopt.

We code using agents, and nearly 100% of our code is written this way. Success here takes a scrutinizing, questioning mindset: the engineers who thrive are the ones who avoid slop, catch the wrong call before it ships, and drive quality and the right engineering choices forward. Generating code is the easy part; knowing what good looks like, and holding the bar, is the job. To be successful in this role you will need expertise in the languages we use sufficient to challenge both agent created code best practices, and architectures.

We also expect every engineer to be an active contributor to how we work, not just a consumer of existing workflows. Improving our agentic workflows, orchestration, and tooling is a core part of the role; we're always looking for ways to raise the team's quality and efficiency, and that's expected from everyone. Desire and excitement for the application of AI to software development is critical to this role. We are seeking candidates who desire to work in and maintain leading edge agentic workflows and stay at the cutting edge as the models and other tools evolve and mature.

Build and continually improve your own agentic development workflow, and help raise the team's. This goes far beyond prompting for code: we use AI across the whole path, from PRDs to technical specs, epics, and tickets, into development plans, and finally into high-quality code with thorough unit and integration tests.

Drive quality through disciplined verification and both agentic and human code review, on your own code and your teammates'. Extend our agentic review tooling as you go, and hold the bar on what gets merged.

Apply your agentic workflow in both greenfield and legacy code, meeting the different challenges each presents.

Own and improve the quality automation you depend on, CI pipelines, checks, and gates, so standards are enforced by the system and not just by people.

Design and implement high-quality, scalable software in Rust (backend) and TypeScript/Node.js (full-stack), writing code in parallel with the tests that validate it.

Take ownership of features end to end, from understanding the requirements, through design, ticketing, and implementation, to testing, validation, shipping, and supporting in production.

Continuously refactor and simplify code to improve clarity, maintainability, and long-term system health.

Develop and refine our APIs, webhooks, and other integration surfaces.

Work in a healthy Agile/Scrum cadence: reliable estimates, using proactive and clear communication, and follow-through on commitments.

Troubleshoot and resolve complex technical issues, including participation in the on-call rotation.

Collaborate with product and cross-functional partners to prioritize features and bug fixes.

Bachelor's degree in Computer Science or a related field, and strong CS fundamentals: data structures, database fundamentals, API design, testing, and an instinct for clean, maintainable code.

Proven production delivery. You have worked on a company or team that actually shipped to production, and you've personally owned features through deploy and into production support.

Experience working in an international team whose common working language is English , collaborating day-to-day with teammates in other countries, in English.

Excellent written and spoken English. You can work entirely in English on a distributed team, explain complex technical ideas clearly, and write docs and code reviews your teammates rely on. This is roughly equivalent to a C1 level of English.

4 or more years of hands-on professional software engineering experience building, shipping, and operating production-quality, reliable systems.

At least 2 years professional experience with a strongly-typed compiled language. Rust strongly preferred; comparable depth in Go, C++, C#, or Java/Kotlin is acceptable if you can demonstrably ramp on Rust quickly.

At least 2 years professional experience with TypeScript / JavaScript and Node.js.

A demonstrated quality focus beyond "writing tests." You have, for example, created, configured, fine-tuned, or troubleshot a CI pipeline (GitHub Actions or equivalent), not just consumed one someone else built.

Hands-on experience writing both unit and integration tests as part of how you build.

Experience with creating software using disciplined agentic flows, from prompt-instructing to complete development orchestrations.

A scrutinizing, questioning mindset: you don't accept output, your own or an agent's, at face value, and you surface problems early.

Familiarity with cloud service design patterns and modern software architecture.

Prior QA, SDET, or test-engineering experience, or a verifiable track record of owning testing/quality on a team.

Test-Driven Development (TDD) experience.

React and Front-End development experience.

Depth across the full stack (front-end and back-end).

Familiarity with AWS and cloud-native services; microservices and containerization.

Proficiency with NoSQL and other modern data-storage technologies.

Onfleet's culture is one that strongly values diversity in its workplace, and we are committed to working with potential team members who can bring diverse perspectives and experience to our company and culture.

We do not make hiring or employment decisions on the basis of race, color, religion, creed, gender, national origin, age, disability, veteran status, marital status, pregnancy, sex, gender expression or identity, sexual orientation, citizenship, or any other basis protected by applicable local, state or federal law.

We highly encourage members of underrepresented groups to apply and we will consider qualified applicants with arrest and conviction records.

We use AI and automated systems to help review applications. Every application that meets the requirements is also reviewed by a person, either an engineering leader or a recruiter.

Onfleet’s mission is to power the future of commerce by enabling businesses of all sizes to move goods more efficiently and delightfully . Our product includes intuitive smartphone apps for drivers, a powerful modern web dashboard for logistics teams, and automatic notifications and real-time tracking for recipients. Onfleet powers millions of deliveries every week for thousands of businesses around the world across a range of industries, from grocery and prepared meals to pharmacy, flowers, and furniture.