Engineer II - Full stack - Python/Django + Typescript on AWS (Columbus)

Onsetto, Inc (Columbus OH, USA) Follow 2 hours ago

Who We Are

At Onsetto, we're building more than technology, we're building the future of business banking.

Trusted by financial institutions across the country, Onsetto is helping banks grow deposits, win operating relationships, and transform how they serve businesses. Following our recent $9 million seed funding round, we're entering an exciting new phase of growth and looking for ambitious, entrepreneurial people who want to help shape what comes next.

What You Will Do

Design, build, and maintain backend services and APIs
Own specific systems or components, including their reliability in production
Debug complex issues across services, infrastructure, and data flows
Improve system performance, scalability, and fault tolerance
Contribute to CI/CD pipelines, deployment processes, and release quality
Use LLM tools effectively to accelerate development while maintaining quality
Participate in incident response and lead root cause analysis efforts
Collaborate with product and engineering to define clear, testable solutions
Contribute to system design decisions and technical tradeoffs

This role is for engineers who can independently own meaningful parts of a system.

As an Engineer II, you are expected to move beyond execution and take responsibility for how systems behave in production. You will design, build, and improve services while owning their reliability, performance, and long-term maintainability.

You will work across backend systems, infrastructure, and reliability, with increasing responsibility for decision-making and system design.

We operate at the intersection of:

AI systems running in real production environments
Regulated financial systems requiring auditability and control

What we build must work consistently, under real constraints, at scale.

What We Are Looking For

3–5 years of experience building production software systems
Strong proficiency in at least one backend language (Python preferred)
Experience designing and building APIs and working with databases
Solid understanding of system design fundamentals (scalability, reliability, failure modes)
Ability to debug across layers (application, infrastructure, data)
Demonstrated ownership of systems or major features
Comfort working in environments with real operational constraints

Extra Credit

You have owned a system or service in production
You proactively identify and fix reliability or performance issues
You think in terms of tradeoffs, not just implementation
You improve systems beyond your immediate scope
You use tools (including AI) to increase speed without sacrificing quality
You help raise the bar for those around you

What Success Looks Like

Systems you own are stable, reliable, and well understood
Production issues are identified, resolved, and learned from quickly
You reduce dependency on more senior engineers for execution
You make sound technical decisions with limited guidance
You improve how the team builds, tests, and ships software

Who Should NOT Apply

You are looking for a purely remote role
You prefer narrowly scoped tasks over system-level ownership
You are not interested in production responsibility or operational accountability
You rely heavily on direction for technical decisions
You avoid debugging complex, ambiguous problems
You are not interested in improving systems beyond your assigned work

What You Can Expect