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I'm a software engineer with 5 years of industry experience, specializing in backend development and microservices. I design scalable systems using modern frameworks and cloud-native tools, and I enjoy delivering robust features across services, APIs, and frontend interfaces. I thrive in collaborative environments and continuously seek opportunities to improve system reliability, performance, and developer productivity. I’m passionate about building maintainable solutions, embracing AI-assisted development, observability, and CI/CD practices to accelerate delivery without compromising quality. I enjoy mentoring teammates, translating complex requirements into practical architectures, and contributing to a positive, growth-focused team culture.…I'm a software engineer with 5 years of industry experience, specializing in backend development and microservices. I design scalable systems using modern frameworks and cloud-native tools, and I enjoy delivering robust features across services, APIs, and frontend interfaces. I thrive in collaborative environments and continuously seek opportunities to improve system reliability, performance, and developer productivity. I’m passionate about building maintainable solutions, embracing AI-assisted development, observability, and CI/CD practices to accelerate delivery without compromising quality. I enjoy mentoring teammates, translating complex requirements into practical architectures, and contributing to a positive, growth-focused team culture.

Jeff Laurent Lee

Full Stack Developer, Back-End Developer, Web Developer, +2

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I'm a software engineer with 5 years of industry experience, specializing in backend development and microservices. I design scalable systems using modern frameworks and cloud-native tools, and I enjoy delivering robust features across services, APIs, and frontend interfaces. I thrive in collaborative environments and continuously seek opportunities to improve system reliability, performance, and developer productivity. I’m passionate about building maintainable solutions, embracing AI-assisted development, observability, and CI/CD practices to accelerate delivery without compromising quality. I enjoy mentoring teammates, translating complex requirements into practical architectures, and contributing to a positive, growth-focused team culture.…I'm a software engineer with 5 years of industry experience, specializing in backend development and microservices. I design scalable systems using modern frameworks and cloud-native tools, and I enjoy delivering robust features across services, APIs, and frontend interfaces. I thrive in collaborative environments and continuously seek opportunities to improve system reliability, performance, and developer productivity. I’m passionate about building maintainable solutions, embracing AI-assisted development, observability, and CI/CD practices to accelerate delivery without compromising quality. I enjoy mentoring teammates, translating complex requirements into practical architectures, and contributing to a positive, growth-focused team culture.

Available to hire

I’m a software engineer with 5 years of industry experience, specializing in backend development and microservices. I design scalable systems using modern frameworks and cloud-native tools, and I enjoy delivering robust features across services, APIs, and frontend interfaces. I thrive in collaborative environments and continuously seek opportunities to improve system reliability, performance, and developer productivity.

I’m passionate about building maintainable solutions, embracing AI-assisted development, observability, and CI/CD practices to accelerate delivery without compromising quality. I enjoy mentoring teammates, translating complex requirements into practical architectures, and contributing to a positive, growth-focused team culture.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Language

English

Advanced

Indonesian

Advanced

Work Experience

Full-Stack Software Engineer at Paystone

November 1, 2024 - Present

Shipped production features across a Mobile POS Terminal App, a loyalty platform, and a marketing automation platform for SMBs — working across backend microservices, frontend React apps, and mobile. Architected and shipped a Broadcast messaging platform end-to-end — Cloud Run services, GraphQL resolvers, Temporal workflows, and React/TypeScript UI — supporting email and SMS campaigns to segmented audiences. Integrated AI-generated broadcast content and LLM-based content moderation into production using Gemini 2.5. Accelerated engineering velocity by adopting agentic AI coding tools (Claude Code) throughout the development workflow. Implemented distributed tracing, span attributes, and metrics for Temporal workflows via OpenTelemetry. Integrated Sentry with a Mobile POS Terminal App from scratch with a custom HTTP interceptor, breadcrumb logging across all payment flows, and CI/CD environment tagging.

Backend Technical Consultant (Freelance) at Aim to Mite Studio

November 1, 2025 - April 1, 2026

Sole technical consultant responsible for architecting and documenting the backend system for a Play-to-Earn mobile game, from ERD design through service API specs and integration flows. Designed full system architecture following Domain-Driven Design — documented end-to-end with sequence diagrams and OpenAPI specs. Designed an idempotent retry mechanism with locked task processing, ensuring no duplicate transactions across payment and disbursement flows. Integrated Google Play Developer API for in-app purchase verification, handling both item purchases and subscription flows with idempotency and order state management. Built DANA (Indonesian e-wallet) disbursement flow — cash-out from in-game money to player bank/DANA balance. Integrated WhatsApp OTP via Gupshup for phone number verification, including rate-limiting, OTP expiry, and fraud-prevention logic. Produced all system documentation solo: ERD, component diagrams, sequence flows for 10+ user journeys, and cost estimation ana

Software Engineer at DANA Indonesia

April 1, 2022 - November 1, 2024

Backend engineer focused on the merchant acquiring domain; developed a system handling over a million transactions daily with an emphasis on memory and time-cost efficiency. Reduced query response time from 2 seconds to 1 second by implementing a three-tier data access strategy with caching. Contributed to data consistency between the database and Elasticsearch using interceptors and schedulers. Further improved query performance to 500 milliseconds by integrating Elasticsearch. Addressed scalability challenges by migrating to a sharded data sources model. Collaborated with product teams and third-party integrators to ensure robust end-to-end solutions.

Application Developer at BINUS University

February 1, 2021 - February 1, 2022

Full-stack web developer contributing to end-to-end development cycles for multiple applications. Collaborated with clients to translate requirements into robust solutions, and led UI development for a beginner programming site built with Laravel, TypeScript, and canvas.

Lecturer at BINUS University

January 1, 2020 - February 1, 2022

Instructed college students in introductory programming, databases, OOP, networking, and web development. Developed challenging exam cases, graded assessments, and received dual nominations as a top-performing lecturer for delivering effective, engaging instruction.

Lecturer at Bank Central Asia

April 1, 2021 - July 1, 2021

Instructed students in Big Data Processing (Hadoop, Spark) and Python for data analysis, delivering hands-on demonstrations of practical data processing techniques.