Fullstack Web3 Developer

Hi, I'm Kobs

I build and launch fast, secure, and human-first dApps. From system architecture, smart contracts, to frontend polish, I bridge product thinking with intuitive engineering so your users trust every click.

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Tech Stack
TypeScript Solidity Next.js Tailwind NoSQL IPFS Node.js PostgreSQL Web3 AWS

About Me

Christian Kobe Sergio

Remote, Philippines•OPEN TO WORK

Fullstack Web3 Developer with a builder's mindset and a track record of leading teams to ship ambitious dApps. As the chief technical architect of a no-code NFT launchpad, I began as the sole developer and later moved into a broader leadership role supporting both our engineering team and the creators building on our platform. Most recently, I contributed to the blockchain infrastructure of one of Hong Kong's first licensed stablecoin providers, designing and maintaining production Solidity contracts focused on scalability and security. I'm now focused on building the next generation of Web3 products — leveraging AI to create faster, smarter, and more intuitive experiences on-chain.

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Experience

V

Jan 2026 — Jun 2026

VISEO

Remote

Blockchain Developer

Built and deployed smart contracts for Hong Kong's first licensed stablecoin platform at Anchorpoint Financial Limited. Covered the full lifecycle — architecture, implementation, testing, and handoff.

Sanction & Directory Compliance

Regulatory-grade on-chain compliance for HK's first licensed stablecoin provider

  • Engineered the sanction enforcement contract for Anchorpoint Financial's stablecoin — blocking issuance and redemption for any wallet matching a live on-chain sanctions directory, satisfying HK licensing requirements for Hong Kong's first regulated stablecoin provider.
  • Designed and deployed a platform and user directory contract system that serves as the single source of truth for permissioned access across Anchorpoint's stablecoin and RWA token operations.
SolidityHardhatTypeScriptChaiMocha

On-chain Rate Limiting

Hardened mint & redemption flows against abuse · RWA-ready token infrastructure

  • Implemented a custom on-chain rate-limiting module for Anchorpoint's stablecoin contracts — enforcing per-address call quotas to prevent abuse of minting and redemption flows on a live regulated platform.
  • Designed an elevated policy layer that routes flagged mint and redemption requests through a secondary review — adding a human-in-the-loop gate before high-risk transactions are settled on-chain.
SolidityHardhatTypeScriptwagmiviemEthereum

Smart Contract Test Suite

70% unit test coverage across 50+ smart contracts

  • Authored the unit test suite for Anchorpoint's stablecoin and RWA platform using Hardhat, Chai, and Mocha — achieving 70% coverage across 50+ smart contracts before client handoff.
  • Integrated automated testing pipelines into the QA workflow — wiring Hardhat test runs into CI so contract regressions were caught automatically on every push.
HardhatForgeChaiMochaTypeScript
K

Oct 2023 - Dec 2025

Kingdomly

Remote

Chief Technology Officer

Architected Kingdomly's V2 ecosystem from scratch — owning all technical decisions from smart contract design to frontend infrastructure. Scaled and led a 13-person engineering team, shipping 5 production products across multiple EVM chains.

Kingdomly Creator + Mint

50K+ unique wallets · 144K+ mint transactions · 7K NFT projects

  • Built a full generative art engine — layers, traits, rarity, rules, and 1/1 logic.
  • Shipped customizable mint gates, phases, and forms — allowlists, presales, and KYC.
  • Built the admin dashboard for scheduling, quotas, toggles, and live mint management.
  • Generated auto-provisioned mint pages per project — individually load-tested to handle traffic spikes, peaking at 60K visitors in a single minute.
  • Shipped gas-free mints on Sophon Chain via paymaster integration and account abstraction — letting users mint without holding SOPH for gas.
Next.jsTypeScriptSolidityIPFSNode.jsPostgreSQLAWSVercel

Kingdomly Marketplace

v1 garnered $50K+ in trading revenue

  • Shipped v1 on Berachain day one using Reservoir SDK — extending mint drops into active secondary trading.
  • Led v2 on Seaport + LimitBreak — custom indexer, orderbooks, and multi-chain transaction handling.
  • Ensured gas-efficient listings and royalty enforcement with ERC721AC + EIP-2981 compliance.
  • Shipped collection pages, rarity rankings, offer/bid flows, and a real-time activity feed on top of the orderbook.
Next.jsTypeScriptSolidityReservoir SDKSeaportSubgraph / IndexerVercel
Kingdomly Marketplace

Kingdomly Bridge

100K+ NFT transfers · $250K+ revenue generated

  • Shipped cross-chain NFT transfers across Ethereum, Arbitrum, Optimism, Zora, Base, and Bera via LayerZero ONFT messaging.
  • Built a permissionless bridge setup interface — any project can enable cross-chain bridging without custom contracts.
  • Delivered custom partner integrations including Honey Jar's multi-chain bridge into the Bera ecosystem.
  • Handled LayerZero message verification, refund logic, and gas estimation — ensuring transfers landed reliably with no double-bridge incidents.
Next.jsTypeScriptSolidityLayerZeroViemPostgreSQLDockerAWS

Kingdomly Staking

6 pools deployed, including 1 protocol-level staking pool

  • Engineered smart contracts — audited by Hashlock — powering secure, flexible NFT staking pools.
  • Built permissionless pool deployment: any creator can launch staking for any collection without writing code.
  • Delivered a self-serve pool configuration UI — creators set reward tokens, lock durations, multipliers, and capacity caps from a no-code admin panel.
Next.jsTypeScriptSolidityViemFirebaseVercel

Kingdomly Docs

Reduced onboarding & support overhead by 50%

  • Authored end-to-end documentation covering Creator, Mint, Marketplace, Staking, and Bridge.
  • Implemented MDX components and a scalable information architecture to stay consistent across rapid product iterations.
MintlifyMDX
Kingdomly Docs
S

Jul 2023 — Oct 2023

Stratpoint

Mandaluyong City, Philippines

DevOps Engineer Intern

Joined as the first DevOps intern to skip the cloud fundamentals track — finished the internal curriculum in a week and immediately contributed to live infrastructure. Built containerized deployments, observability pipelines, and automated alerting used by the engineering team.

Stratpoint DevOps Internship

Improved deployment reliability and shortened incident response loops.

  • Containerized and deployed internal services with Docker and Kubernetes.
  • Implemented observability with Grafana and Jenkins to track uptime and logs.
  • Built a Telegram alerting system that posts outage and health updates automatically.
DockerKubernetesGrafanaJenkinsTelegram Bot API
Stratpoint DevOps Internship

GitHub Activity

Projects

PRC Inspection and Monitoring System

Production readyPending Pilot Test

Automated compliance inspection platform for the Professional Regulation Commission — replacing manual, paper-based workflows used to evaluate HEIs and hospitals nationwide.

  • Built a multi-tenant platform supporting 5 user roles — PRC Board Members, ACD, Regional Offices, Oversight Commissioners, and HEIs/Hospitals — each with separate portals.
  • Developed a compliance monitoring workflow purpose-built for PRC BOND's inspection cycles, replacing the legacy accreditation system.
  • Delivered real-time inspection tracking, document submissions, findings, recommendations, and nationwide compliance coverage.
Next.jsTypeScriptTailwindNode.jsFirebaseNextAuthSMTPVercel
View build
PRC Inspection and Monitoring System

Tenelos — Tennis ELO Rating System

Production deployedFreelance Project

Full-stack tennis ELO rating platform — from Python ETL pipelines cleaning raw match data to a production site powering player rankings, analytics, and match predictions.

  • Processed large volumes of inconsistent Excel records using Python ETL scripts — turning raw tennis data into a clean, structured dataset.
  • Built a complete player analytics experience — profiles, head-to-head records, match histories, and ELO-based dynamic rankings.
  • Implemented Chart.js visualizations for performance trends, win/loss charts, H2H stats, and ranking changes.
  • Delivered a fullstack platform with admin interface, auth, automated data ingestion, and SEO optimization.
MERN StackTailwindMongoDBPythonETL Pipelines
View build
Tenelos — Tennis ELO Rating System

Ready for your next product or MVP

I ship end to end across design systems, frontend, backend, and smart contracts. I enjoy working closely with founders and teams to move from concept to launch fast.

Fullstack DevelopmentWeb3Product Leadership
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Quick stats

Timezone

UTC+8 (PH)

Languages

EN, Tagalog

Availability

Open to collabs

Response

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