Senior Software Engineer (Full Stack)

About the role

KOLO is looking for a senior full‑stack engineer to join its remote team and take ownership of end‑to‑end features in a high‑impact ERP/POS platform. The position offers a clear path to a Tech Lead role within 6‑12 months.

Key responsibilities

• Design, develop, and stabilize new features across backend, web frontend, mobile, and infrastructure.
• Maintain production quality without constant supervision and resolve incidents quickly.
• Integrate electronic invoicing and payment systems for multiple Latin American countries.
• Perform hot migrations of legacy modules to new architectures without downtime.
• Collaborate with a small, high‑standard team to ensure code quality and architectural consistency.

Required profile

• Proven senior‑level experience delivering autonomous, high‑quality software.
• Ability to understand and work on unfamiliar codebases rapidly.
• Experience with ERP/POS, high‑volume transactional systems, and zero‑tolerance for data inconsistencies.
• Background in SaaS multi‑tenant environments and hardware‑integrated POS solutions.
• Track record of handling production incidents and delivering measurable results.

Required skills

• Java 21, Spring Boot 3.5, JPA/Hibernate, Redis
• Clean Architecture, Domain‑Driven Design, CQRS
• Next.js 15, React 19, TypeScript, MUI v6, TanStack Query

What we offer

• Competitive monthly salary USD 2,500 – 3,500 (billing)
• Fully remote work (preferably based in Guatemala or Central America)
• Clear career path toward Tech Lead responsibilities
• Opportunity to impact real businesses daily