Senior Full-Stack Engineer

Svitla; United States; Remote; USD 110,000 - 160,000; Full time

Benefits offered by this job

Bonuses for referrals

Performance appraisals

Learning program

Free tech webinars

Flexible workspace

15 vacation days

10 national holidays

10 sick leaves

Team events

Job summary

Svitla Systems Inc. is seeking a Senior Full-Stack Engineer for a full-time role (40 hours per week) focused on a LATAM-based fintech client.

You will own end-to-end development across frontend, backend, and infrastructure, including AI coding agents, with emphasis on architecture, reliability, and secure deployment. Enjoy flexible workspace options including remote, our office, or coworking.

Qualifications

• 6+ years of full-stack engineering experience shipping production systems.
• Strong full-stack fundamentals across frontend (React or similar), backend (APIs and services), databases, and cloud infrastructure.
• Hands-on experience directing AI coding agents or LLM-based workflows in production.
• A portfolio, GitHub history, or shipped systems you can discuss in depth.
• Solid grasp of testing, code review, security, and deployment best practices.
• Sound judgment on when to let agents run and when to write the code by hand.
• Comfort operating with high autonomy and full ownership.

Responsibilities

• Orchestrate AI agents across the full development lifecycle from spec to PR to production.
• Build and refine evaluation harnesses, CI checks, and review gates to keep agent-generated code correct and auditable.
• Break ambiguous product requirements into concrete tasks for agents and verify outputs.
• Monitor application health, performance, and incidents and intervene when needed.
• Partner with product and design to ship fast without compromising quality.

Skills

Full-stack engineering

Frontend (React)

Backend APIs & services

Databases & cloud

AI agents / LLM workflows

Portfolio / GitHub

Testing & security practices

Autonomy / ownership

Tools

CI/CD pipelines

Observability tooling

Code evaluation systems

Job description

Svitla Systems Inc. is looking for a Senior Full-Stack Engineer fora full-time position (40 hours per week) in LATAM. Our client is a US-based fintech company that runs a community finance platform where members can borrow and lend small amounts to cover emergency expenses. Launched in 2018, it offers an alternative to payday loans, with borrowers setting their own terms, along with financial education and digital banking services. The platform serves around 2 million users and has facilitated about $1 billion in transactions.

Our client is building the engineering function of the future: one engineer operating a team of AI agents rather than managing a team of people. In this builder-operator role, you will own full-stack development across the client’s ecosystem, from frontend to backend to infrastructure, using agents as the workforce and your judgment as the control layer. You will be responsible for the architecture, code quality, and reliability of what the agents produce, and for the workflows, guardrails, and evaluation standards that let them ship production code at scale.

Requirements

• 6+ years of full-stack engineering experience shipping production systems.
• Strong full-stack fundamentals across frontend (React or similar), backend (APIs and services), databases, and cloud infrastructure.
• Hands-on experience directing AI coding agents or LLM-based workflows in production, not just experimenting with them.
• A portfolio, GitHub history, or shipped systems that you can point to and discuss in depth.
• Solid grasp of testing, code review, security, and deployment best practices.
• Sound judgment on when to let agents run and when to write the code by hand.
• Comfort operating with high autonomy and full ownership.

Will be a plus

• Experience in fintech, lending, or payments.
• Background in mobile development (React Native or native iOS/Android).
• Track record of building CI/CD, observability, or evaluation systems for code or agent pipelines.

Responsibilities

• Orchestrate AI agents across the full development lifecycle, from spec to PR to production.
• Build and refine evaluation harnesses, CI checks, and review gates that keep agent-generated code correct, secure, and auditable.
• Break ambiguous product requirements into clear tasks that agents can execute, then verify and integrate their output.
• Monitor application health, performance, and incidents, stepping in when human judgment must lead.
• Partner with product and design to ship fast without compromising quality.

We offer

• US and EU projects based on advanced technologies.
• Competitive compensation based on skills and experience.
• Regular performance appraisals to support your growth.
• Flexibility in workspace, either remote, our welcoming office or local coworking.
• Bonuses for recommendations of new employees.
• Bonuses for article writing, public talks, other activities.
• 15 vacation days, 10 national holidays, 10 sick leaves.
• Personalized learning program tailored to your interests and skill development.
• Free tech webinars and meetups organized by Svitla.
• Fun corporate online\\offline celebrations and activities.
• Awesome team, friendly and supportive community!

Why join Svitla

Svitla Systems is a global digital solutions company headquartered in the U.S. and operating across the Americas, Europe, Asia, and APAC. Since 2003, we have served a wide range of clients - from innovative start-ups to Fortune 500 companies. Our success is built on partnership. By integrating seamlessly with clients' teams, we create lasting collaborations that drive real results. We are strong advocates of workplace flexibility, remote culture, individual approach to professional and personal growth.

Our global mission is to build a business that contributes to wellbeing of our partners, personnel, and their families, improves our communities, and makes a lasting difference in the world. Together, we are coding a brighter tomorrow - and living it.