Neljohn Cerera
Available for new projectsSolo or teamShips end-to-end

Full-stack developer who ships the whole product — solo or with a team.

I've proven I can take a product from zero to production — alone. Now I want to bring that ownership mindset to a team, collaborate with engineers who challenge me, and build things that reach more people. Whether that's a full-time role or a high-impact contract, I'm ready.

Get in touchView work

Neljohn R. Cerera

Full-Stack Developer · Solo or Team

Philippines · Remote

Experience
3+ yrs
In tech since 2023
Projects
5
Shipped to production
Tech Stack
16
Languages & frameworks
Commits '26
1,905
2026
1,881 in 2025 · 1,805 in 2024

Projects

Designed, built, and shipped solo, end to end

Under NDA

Human Resource Information System

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Full-stack, on-premise Human Resource Information System — employee 201 files, attendance and DTR, leave, and payroll-ready exports in one platform. Client project, details confidential.

Implementation details omitted — happy to walk through on a call.

NestJSNext.jsPostgreSQLREST API
Under NDA

Members Information System

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Solo rewrite of the cooperative's core legacy desktop system — members, accounts, and reporting — moved to a modern on-premise web platform without losing the proven business logic. Client project, details confidential.

Implementation details omitted — happy to walk through on a call.

NestJSNext.jsPostgreSQLLegacy migration
Under NDA

Election Management Platform

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Full-stack, on-premise platform for delegate-based elections — from setup to finalized, anonymized results. Client project, details confidential.

Implementation details omitted — happy to walk through on a call.

NestJSNext.jsMySQLREST API
Under NDA

Event Management Platform

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Full-stack, on-premise platform for administering member assembly events — from setup and check-in to a sealed, audited result. Client project, details confidential.

Implementation details omitted — happy to walk through on a call.

NestJSNext.jsPostgreSQL
Under NDA

Loan Documentation System

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Windows desktop application that generates a member's complete, print-ready loan document set — application, promissory note, disclosure statement, and contract — from a single loan record. Client project, details confidential.

Implementation details omitted — happy to walk through on a call.

C#.NETWinFormsSQL Server

Experience

Roles, teams, and what I shipped

Support Specialist → Full-Stack in a year — learned the legacy system from the ground up, then led its migration from desktop to web, solo.

  1. Full-Stack Developer

    Agdao MultiPurpose Cooperative

    Current2024 — Present

    Promoted within a year and handed the rewrite of the Members Information System — solo. I traced the slowness to missing database indexes rather than the queries, kept the proven business logic, and moved it to the web; search went from seconds to instant.

    From there I designed and shipped the cooperative's on-premise systems: a delegate-based Election Management Platform used in real elections, an Event Management Platform for district-assembly attendance, and an HRIS. I own every layer — architecture, PostgreSQL and MySQL schema design, NestJS APIs, Next.js and React frontends, Docker deployment on our private cloud, and the data pipelines that feed the legacy core.

    NestJSNext.jsPostgreSQLMySQLDockerClaude AICursorSupabase

  2. Software Specialist

    Agdao MultiPurpose Cooperative

    2023 — 2024

    Front-line IT support — network issues, system errors, and whatever broke on someone's desk that day. Rather than only clearing tickets, I spent my spare hours reading the cooperative's internally built desktop system: its architecture, its data model, and where it hurt. Knowing that system end to end is what earned the promotion that followed.

    Windows systemsNetworkingLegacy systemsSystem analysis

Skills

Core stack and the depth behind it

Proficiency

NestJS95%
Node.js93%
Next.js92%
React90%
TypeScript90%
PostgreSQL88%
MySQL85%
Tailwind & shadcn/ui85%
Docker & Nginx80%

Where I focus

Backend & APIs45%
Frontend & UI30%
Database design15%
DevOps & infra10%

Toolbelt

TypeORMPrismashadcn/uiDockerNginxTanStack QueryZodRESTTailwindGitSupabase

Let's work together

Have a product to build?

I'm available for full-time roles and select contract work. Tell me what you're building and I'll get back within a day.

neljohncerera.developer@gmail.comgithub.com/neljohncereradeveloper