firlan
Senior Software Engineer
Senior Software Engineer with 10 years of experience building mission-critical fintech and distributed web applications, specializing in TypeScript, Node.js, React, PostgreSQL, and AWS. Experienced in handling high-concurrency transaction flows, complex data modeling, and robust API integrations under strict reliability standards. I am seeking remote Senior Full-Stack or Backend Engineering opportunities in Web3/crypto where I can take end-to-end ownership in designing scalable, secure infrastructure and user-facing decentralized applications.
Experience: 9 years
Yearly salary: $24,000
Hourly rate: $60
Nationality: 🇮🇩 Indonesia
Residency: 🇮🇩 Indonesia
Experience
Software Engineer
Markets4you (Forex4you) 2025 - 2026
Architect and optimize high-throughput web components and backend integration endpoints. Troubleshoot production bugs and improve system latency, conducting query optimization and refactoring legacy services for long-term maintainability. Participate actively in PR reviews and uphold high engineering standards across a distributed international engineering team.
Senior Full stack
Krom Bank 2021 - 2025
Built and maintained scalable digital banking systems and enterprise web portals using React, TypeScript, Node.js, and PostgreSQL under strict financial reliability standards. Modeled complex relational database schemas and optimized indexing strategies to support high-concurrency peak traffic with sub-second latencies. Managed containerized development and deployment workflows with Docker and AWS, establishing automated testing pipelines with Jest (>80% coverage). - Mentored 4+ junior and mid-level engineers in system design, code review standards, and incident response, earning the peer-voted Best Buddy 2025 award.
Skills
agile
ai
aws
backend
ci-cd
docker
front-end
full-stack
javascript
jquery
linux
node
postgres
project-manager
redis
remote
sql
typescript
wordpress
english
indonesian