Angga.

About

Engineer building secure systems — and shipping side projects on top of a fulltime job.

I'm Angga Saputra, based in Indonesia. I work across the stack with a bias toward identity, cryptography, and authentication. Reach me at anggasp.unib@gmail.com.

Experience

  1. Software Developer II · VIA Science

    Fulltime

    Nov 2024 — Now
    • Accelerated a $28M Series B by delivering a high-fidelity MVP in 8 weeks — the technical proof-of-concept that secured key institutional investor buy-in.
    • Reduced onboarding drop-off by 35% and eliminated credential-stuffing risk by architecting a passwordless auth system on FIDO2/WebAuthn and W3C DIDs.
    • Engineered an IoT Permission Manager: 100% revocable, time-bound access to smart-meter datasets, with automated tamper-evident audit trails and granular data-sharing controls.
    • Mitigated long-term cryptographic risk with a Secure-by-Design auth flow integrating Post-Quantum Cryptography (NIST Dilithium) with W3C Decentralized Identifier (DID) identity verification.
    • Cut SDK maintenance overhead by 80% (~12h/week) by refactoring an open-source auth library into a unified Parent Theme architecture across five UI variants.

  2. Senior Fullstack Engineer · Salad Ventures Pte Ltd

    Contract

    May 2024 — Oct 2024
    • Scaled a Telegram-based clicker game from 0 to 30,000+ active users in the launch month by optimizing WebSocket state and server-side validation (<100ms latency).
    • Engineered a high-concurrency staking protocol with optimistic locking and transactional integrity to prevent double-spending at peak load.
    • Reduced NFT gas costs by 40% with a custom minting engine on ERC-721A batch minting and a Redis layer for real-time metadata.
    • Bridged off-chain and on-chain ecosystems with custom middleware for a Telegram Mini App — transaction signing and wallet sync via WalletConnect and RPC providers.
    • Increased dev velocity by 67% by establishing a modular component library and custom wallet-integration React hooks that anchored three product launches.

  3. Senior Frontend Developer · The Treedots Pte Ltd

    Fulltime

    Apr 2022 — May 2024
    • Scaled a regional B2B marketplace to 10,000+ monthly orders by leading a cross-functional frontend re-architecture of the ordering flow at 99.9% uptime.
    • Reduced post-release bugs by 40% with a standardized CI/CD pipeline, Jest/Cypress regression coverage, and a peer-review framework for mission-critical features.
    • Optimized P99 load time by 30% via code-splitting, tree-shaking, and lazy-loading — directly improving retention for mobile-first wholesale buyers.
    • Cut MTTR for critical incidents by 50% with centralized observability (Sentry/LogRocket) and an on-call runbook repository.
    • Accelerated feature time-to-market by 25% with a modular UI design system that streamlined hand-off between design and engineering.

Technical expertise

Languages & Runtimes

  • TypeScript / JavaScript (Fluent)
  • Python (Fluent)
  • Java (Fluent)
  • Swift (Proficient)
  • Go / Rust / C++ (Familiar)

Distributed Systems & Backend

  • Microservices, gRPC, REST, GraphQL
  • Event-Driven Design
  • Kafka, RabbitMQ
  • Prisma, Sequelize, Gorm, Poetry, UV

Infrastructure & DevOps

  • AWS (EC2, Route53, VPC, IAM, CloudFront, S3, Lambda)
  • Terraform, Ansible
  • Prometheus, Grafana Stack LGTM
  • Docker, CI/CD pipelines

Security & Cryptography

  • Keycloak (IAM), W3C DIDs, WebAuthn / FIDO2
  • Post-Quantum Crypto (NIST Dilithium)
  • PKI, JWT, SSL/TLS

Databases

  • PostgreSQL, MySQL (optimization & indexing)
  • MongoDB, Redis (caching)

Programs & education

  • Apple Institute for DevOps

    Learner

    2026

  • Synrgy Academy (Binar x BCA)

    Full Stack Development

    2023

  • Apple Developer Academy (ILB)

    Learner

    2021

  • Glints x Binar Academy

    Frontend Engineering

    2020

  • University of Bengkulu

    Bachelor of Agribusiness

    2015 – 2020

Elsewhere

GitHub ↗LinkedIn ↗npm — password-obscura ↗