Svitla Systems Inc. is looking for a Senior Software Engineer for a full-time position (40 hours per week) in Colombia, CR,Mexico.Our client offers a comprehensive suite of billing, payments, and software solutions for professional services firms.
Requirements
Front-end experience
- Strong production experience with React, including modern hooks, suspense, and patterns.
- Solid grounding in performance, accessibility (WCAG), responsive design, and component architecture.
- Experience with enterprise component libraries (MUI, Radix UI, Shadcn) and data-heavy UI is a plus.

Back-end experience
- Strong production experience in .NET / C# (.NET 8 or later), building RESTful APIs and microservices following API-first principles.
- Strong knowledge of SQL Server, T-SQL, schema design, query performance tuning, and Entity Framework / ADO.NET.
- Experience with cloud platforms. AWS preferred (Lambda, ECS, RDS, SQS, S3, CloudWatch). Azure equivalents are fine.
- Architectural judgment on service boundaries, async messaging, caching, and consistency trade-offs.

Full-stack bar




- 5+ years of professional software engineering experience, with at least 2+ years of meaningful full-stack work. You’ve shipped features end-to-end, not just thrown code over the wall in either direction.
- Comfort being primary owner of a feature across both stacks. You don’t need a separate engineer to write the API for your UI or vice versa.
- Payments experience (strongly preferred)
- Hands-on Stripe integration in production. Embedded Checkout and Payment Element on the front. PaymentIntents, payment method cloning, refunds, and webhook handling on the back.
- Stripe Connect experience is a strong differentiator. Connected account creation, embedded onboarding components, direct charges, KYC and persons, capability and requirements webhooks, and payout bank attachment. Marketplace flows and multi-merchant architectures are a plus.
- Deep understanding of idempotency, retry safety, webhook signatur

📌 SENIOR SOFTWARE ENGINEER (Colombia)
🏢 Svitla Systems
📍 Colombia