Tech Lead & Backend Engineer / Jakarta, ID
I build reliable backend systems for financial and enterprise platforms, and lead the rebuild when the old ones stop working.
Java · Spring Boot · Kafka · Distributed systems
Tech Lead at Integrity Asia since November 2026, rebuilding our ERP platform and leading two engineers.
Explore my work01 / Selected work
Real constraints. Considered decisions. Measurable results.
02 / Experience
Nov 2026 — Present
Tech Lead
Leading the rebuild of Integrity Asia's ERP platform from scratch: redesigned around how the business actually operates, taking in the legacy screening apps' data, and built so the business can expand without another rewrite. Two engineers report to me.
Aug 2025 — Oct 2026
Software Engineer
Built ERP modules and client integrations, and led the refactor that stabilised the legacy screening platform. Senior-scoped in a flat title structure: mentored two junior engineers before stepping up to Tech Lead.
Jan 2023 — Aug 2025
Senior Backend Developer
Architected and shipped five microservice platforms of three to nine services each — real-time messaging, CRM, telephony, vehicle insurance, sales performance — on Alibaba Cloud. Promoted to Senior after twelve months.
Apr 2025 — Aug 2025
Senior Backend Developer
Client placement via Berijalan. Designed and delivered virtual account features on Google Cloud for a digital bank, and hardened core banking services under banking-grade security and audit requirements. The only engineer to pass the technical assessment.
03 / Technical focus
Java · Kotlin · TypeScript · C#
Spring Boot · Spring Cloud · .NET · Node.js · gRPC · REST
PostgreSQL · Kafka · Redis · Change Data Capture pipelines
OpenSearch · ClickHouse · dynamic filtering, facets, and grouping (R&D)
Resilience4j — circuit breaker, retry, bulkhead · eventual-consistency design
Alibaba Cloud · Google Cloud · Azure · Docker · Jenkins · Argo CD
React · TypeScript · Angular · JUnit · Mockito
04 / Open source
Partial search over encrypted data using field-scoped HMAC tokens. The write-up covers the architecture, key rotation, and leakage trade-offs.
Explore the project GitHubI own the system and the reasoning behind it: understanding business constraints, choosing service boundaries, and helping other engineers make sound decisions.
Away from the keyboard, I head for the mountains.
M.Sc. Informatics
Atma Jaya University Yogyakarta · GPA 3.74
B.Sc. Informatics
Atma Jaya University Yogyakarta · GPA 3.79
Let’s talk
Paulus Pandu Windito
Jakarta, Indonesia · GMT+7