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FLIN

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Full Stack Developer

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Summary

Full Stack Developer at FLIN (Indonesia) building and shipping web and mobile features end to end: PHP/WordPress frontends, Node.js REST APIs, MySQL/PostgreSQL schemas, plus AI API (OpenAI/Claude) and payment/CRM integrations, deployed and monitored on Linux servers and cloud infrastructure.

Responsibilities

Design, build, and ship features across frontend and backend, from requirement to production

  • Develop responsive web applications using PHP , Wordpress
  • Build and maintain backend services and REST APIs using Node.js
  • Design database schemas and write efficient queries in MySQL / PostgreSQL
  • Develop and maintain custom WordPress themes, plugins, and integrations via the WP REST API
  • Integrate AI APIs (Claude, OpenAI) into products and internal workflows, including prompt design and output handling
  • Integrate third-party services such as payment gateways, CRM, messaging, and partner APIs
  • Deploy, monitor, and troubleshoot applications on Linux servers and cloud infrastructure
  • Write clean, tested, maintainable code and take part in code reviews
  • Work with QA to fix bugs, improve test coverage, and keep releases stable
  • Apply security best practices to protect customer and financial data
  • Document architecture, APIs, and technical decisions for the team

Responsibilities

Design, build, and ship features across frontend and backend, from requirement to production

  • Develop Mobile App using React Native
  • Develop responsive web applications using PHP , Wordpress
  • Build and maintain backend services and REST APIs using Node.js
  • Design database schemas and write efficient queries in MySQL / PostgreSQL
  • Develop and maintain custom WordPress themes, plugins, and integrations via the WP REST API
  • Integrate AI APIs (Claude, OpenAI) into products and internal workflows, including prompt design and output handling
  • Integrate third-party services such as payment gateways, CRM, messaging, and partner APIs
  • Deploy, monitor, and troubleshoot applications on Linux servers and cloud infrastructure
  • Write clean, tested, maintainable code and take part in code reviews
  • Work with QA to fix bugs, improve test coverage, and keep releases stable
  • Apply security best practices to protect customer and financial data
  • Document architecture, APIs, and technical decisions for the team

Requirements

Must Have

  • 2 to 3 years of professional experience as a Full Stack Developer
  • Solid experience building REST APIs with Node.js (Express, NestJS, or similar)
  • Experience with relational databases (MySQL / PostgreSQL): schema design, queries, indexing
  • Experience with React Native is plus
  • Working knowledge of WordPress: custom plugins, hooks, and the WP REST API
  • Experience calling AI APIs (OpenAI, Anthropic, etc.) in a real project
  • Comfortable with Git, code reviews, and team branching workflows
  • Linux proficiency: SSH, server setup, logs, process management (PM2 / systemd), Nginx
  • Understanding of web security basics: authentication, authorization, OWASP Top 10

Nice to Have

  • Experience with Docker and CI/CD pipelines (GitHub Actions, GitLab CI)
  • Cloud experience (AWS, GCP, or similar)
  • Mobile development exposure (React Native or Flutter)
  • Experience building AI workflows: RAG, agents, or automation pipelines
  • Experience writing unit and integration tests (Jest, Vitest, Supertest)
  • Background in fintech, lending, or other regulated industries

Skills

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See also

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