AI Context Optimization
Iritoken
A deterministic, provider-agnostic toolkit that reduces low-value noise in AI coding context with budgeting, retrieval, caching, routing, and evaluation.
Published on npm · Apache-2.0
Full Stack Engineer · AI & Product Builder · Indonesia
I build AI systems
and products that ship.
I'm Lelianto—a product-minded engineer and digital product partner turning complex problems into reliable products—from customer-facing apps to local-first infrastructure for AI agents.
BASED INTangerang Regency, Banten
7+years shaping digital products
2K+LinkedIn followers
Top 4Simkopdes 2026 · National
25Packages on npm · antihero
S1 + S2Universitas Indonesia
01 / FEATURED AI + OPEN SOURCEInfrastructure for
Infrastructure for
better AI work.
My newest public work focuses on context efficiency, agent auditability, code intelligence, and observable AI systems. Each project links to its canonical repository and, where available, its current npm release.
AI Agent Activity Log
ai.log
A local-first audit trail for AI coding agents—recording file reads, commands, and failures honestly on the developer's own machine.
Published on npm · MIT
Code Intelligence & Governance
NodeNet
An explainable, local-first graph that maps code, living context, ownership, and authority—so humans and AI can understand change impact and identify the right reviewers.
Published on npm · Apache-2.0
AI Governance & Context Infrastructure
Living Context-Driven Development
A development methodology and toolkit that treats context as a living artifact: versioned, governed, enforced, and evolved alongside the software it guides.
3 public modules · Apache-2.0
Observability for AI Agents
AgentifAI
Vendor-neutral observability for prompts, model calls, memory, tools, tokens, cost, latency, and replay-safe AI agent debugging.
8 public packages · MIT
Portable Agent Skills
OpenCraft Skills
Portable end-to-end Agent Skills for meaningful, secure, production-ready product development across AI coding tools and team workflows.
Published on npm · MIT
02 / PROFESSIONAL PORTFOLIOProducts delivered
Products delivered
with product teams.
Company and client work across investing, healthcare, lending, and B2B commerce—kept distinct from my independent product experiments.
01Investment Super App
Nanovest App
A mobile investment platform for global stocks and crypto assets, built for a safe, seamless journey from onboarding to portfolio management.
Developed in collaboration with the brilliant product and engineering team at Nanovest.
02Digital Health
YesDok Indonesia
A healthcare platform connecting patients with doctors, supported by operational dashboards for clinics, hospitals, and administrators.
Created alongside the dedicated product and engineering team at YesDok.
03Fintech
Rupiah Cepat
A conversion-focused public experience for an online lending platform, delivered as a short-term project engagement.
04B2B Marketplace
GudangAda
A wholesale commerce product for retailers and wholesalers, built while leading frontend delivery, sprint rhythm, and team growth.
Built collectively with the talented product and engineering team at GudangAda.
03 / INDEPENDENT VENTURESIdeas turned into
Ideas turned into
working products.
Hackathon entries and self-initiated platforms exploring local commerce, MSME enablement, pet care, blockchain, logistics, and AI.
01National Top 4 · Simkopdes 2026
Aruna
A modern governance platform for Koperasi Desa Merah Putih—connecting village commodities to national markets through offline-first POS, AI operations, supply consolidation, and data-led scoring.
02Culinary Procurement Platform
Kuloka
A modern procurement platform helping culinary MSMEs source fresh ingredients from trusted local suppliers with coordinated delivery and real-time tracking.
03Neighborhood Commerce
TitipTetangga
A hyperlocal marketplace where residents discover nearby home stores and shopping services, compare reputation and fees, then coordinate orders safely.
04Supplier & Reseller Platform
Resello
An end-to-end commerce workflow unifying supplier discovery, product comparison, shipping estimates, recorded conversations, payment verification, and order tracking.
05Tokenized Precious Metals
Presiore
A Sepolia-based product concept for tokenizing, trading, and redeeming gold and other precious metals with proof-of-reserve and an AI copilot experience.
06Pet Services Directory
BuluBulu
A nationwide discovery experience for nearby grooming, veterinary, pet hotel, and pet shop services—with ratings, location filters, and direct WhatsApp contact.
07Local Business Enablement
Etalaso
A professional digital storefront and discovery platform helping Indonesian local businesses publish profiles, catalogs, and WhatsApp-ready customer journeys.
INTERACTIVE PROJECT INDEX
Find the relevant proof.
01IritokenAI Context OptimizationTypeScript · Context Engineering02ai.logAI Agent Activity LogTypeScript · AI Agents03NodeNetCode Intelligence & GovernanceTypeScript · Static Analysis04Living Context-Driven DevelopmentAI Governance & Context InfrastructureTypeScript · AI Governance05AgentifAIObservability for AI AgentsOpenTelemetry · AI Agents06OpenCraft SkillsPortable Agent SkillsAgent Skills · AI-Assisted Development01Nanovest AppInvestment Super AppReact Native · TypeScript02YesDok IndonesiaDigital HealthNuxt.js · TypeScript03Rupiah CepatFintechNuxt.js · TypeScript04GudangAdaB2B MarketplaceNuxt.js · JavaScript01ArunaNational Top 4 · Simkopdes 2026AI · Offline-first02KulokaCulinary Procurement PlatformMarketplace · AI Powered03TitipTetanggaNeighborhood CommerceHyperlocal · Marketplace04ReselloSupplier & Reseller PlatformB2B Commerce · Payments05PresioreTokenized Precious MetalsBlockchain · Sepolia06BuluBuluPet Services DirectoryDirectory · Local Search07EtalasoLocal Business EnablementLocal Business · Directory
Analytics load as you approach.
04 / EXPERIENCEGrowing with every
Growing with every
hard problem.
An engineer who stays close to the craft while helping teams find clarity, momentum, and room to grow.
Full Stack Engineer
NanovestExpanding from frontend ownership into full-stack product delivery for a multi-asset investment platform.
Frontend → Senior Frontend Engineer
NanovestBuilt mobile and web products for global stocks and crypto, partnered across countries, and mentored engineers beyond day-to-day delivery.
Senior Frontend Developer · Project
KororoDelivered focused frontend work for an international, Sydney-based product team.
Frontend Web Developer · Project
Rupiah CepatShipped a customer-facing fintech experience in a fast, four-month engagement.
Mid-Level Frontend Web Developer
YesDokBuilt patient, doctor, clinic, hospital, and administration experiences with an eight-engineer product team.
Lead Frontend Web Developer
GudangAdaLed delivery and team development while remaining hands-on across product code, sprint planning, and Scrum.
05 / HOW I WORK
“Frameworks are tools.
The real work is solving
the right problem.”
Product judgment, engineering depth, and a bias for people.
I've taken products from zero to one, delivered inside multinational remote teams, and helped engineers grow through mentoring and one-on-ones. I care about the small details because they add up to trust.
TypeScriptReact / Next.jsReact NativeVue / Nuxt.jsJava / Spring BootFirebaseNode.jsProduct Leadership
06 / BUILD WITH MEHave a business problem?
Have a business problem?
Let's make it digital.
I collaborate with founders, businesses, and institutions to turn early ideas or operational pain points into useful digital products. From discovery to a working launch, I bring product thinking and hands-on engineering into one focused partnership.
Product Discovery
Clarify the problem, users, scope, and fastest path to a valuable first release.
Web Platforms
Customer-facing websites, marketplaces, dashboards, portals, and operational tools.
Mobile Products
Cross-platform mobile experiences designed for real users and real-world constraints.
AI & Automation
Practical AI workflows and automation that reduce repetitive work and unlock better decisions.
IDEAL FOR
MVPs · Product modernization · Internal operations · New digital ventures · Technical consultation
07 / WRITING
Notes from the field.
Practical reflections on engineering, leading teams, and building a sustainable career in technology.
01
More ideas, engineering notes, and reflectionsRead all writing on Medium Engineering
02Sorry I couldn't build a good unit test for our React.js Website
Leadership
03Good Advice for Tech Leads
Mentoring