Senior Fullstack Developer

About Penbrothers

Penbrothers is an HR & remote talent management partner and one of the fastest growing companies in the Philippines. We provide talented Filipinos with global opportunities in high-growth startups and dynamic companies, from the comfort of their own homes.

About the Client

A production company that blends traditional marketing with content marketing to create engaging, audience-centric campaigns. Rather than simply "talking at" people, the agency focuses on producing creative content—such as video and other media—that connects with audiences by "talking with them," fostering stronger engagement and impact.

About the Role

We're looking for a senior full stack engineer to lead development on modern, high-traffic applications. You'll own end to end delivery across product features, integrations, performance, and reliability. The role is fully remote and highly collaborative with product/design and stakeholders.

• Own full feature lifecycles: design, implement, test, ship, and iterate in a App Router codebase.

• Build and maintain robust server-side modules and integrations:

• Payments (Stripe), auth (Clerk), content (Storyblok), email (Mailjet).

• External Domain APIs including data backfills, sync, and webhook flows.
• Background jobs/queues (QStash), secure admin endpoints, and operational tooling.
• Model and evolve data with Prisma; write efficient queries and safe migrations.
• Design and implement intuitive, scalable, and reusable content models within modern headless CMS platforms (e.g., Storyblok, Payload, Contentful, Sanity, or similar) which balances editor usability with technical flexibility.
• Improve performance, accessibility, SEO metadata, and SSR/ISR behavior.
• Perform QA and testing for websites, landing pages, and emails.
• Strengthen reliability: logging, error handling, idempotency, retries, rate limit strategies.
• Maintain a clean, modular architecture; refactor shared layouts/utilities to reduce duplication.
• Create scripts for data backfills and maintenance; document operational runbooks.
• Review code, mentor peers, and champion best practices for DX, testing, and security.
• Collaborate closely with design to deliver polished UI/UX and smooth interactions/scroll experiences.
• Develop and implement marketing assets for platforms including SFMC, Mailchimp, and Campaign Monitor.

Our Stack

• Application: (App Router), React, TypeScript
• Data: Prisma ORM with a relational DB (e.g., Postgres, Neon), Redis
• Headless CMS: Storyblok
• Payments: Stripe (product/price-first flows)
• Auth: Clerk, Auth0, Supabase
• Messaging/Queues: QStash (Upstash)
• Third Party API Integrations
• Infra/Runtime: , environment-based configuration, webhooks, background jobs
• Frontend UX: modern animation/scroll tooling (e.g., Lenis, GSAP, ScrollTrigger)
• Styling: Tailwind, CSS, SCSS, PandaCSS
• Tooling: npm scripts, Prisma migrations/generate, env management
• Cloud: Vercel, AWS, Supabase, Azure

Essential Skills

• Expert in TypeScript, React, and (App Router, SSR/SSG, routing, metadata).
• Experience with SCSS/Tailwind CSS and responsive development
• Strong backend experience: APIs, webhooks, background jobs, and queue semantics.
• Prisma proficiency: schema design, migrations, performance tuning, and troubleshooting.

• Production-grade integration experience:

• Stripe (products/prices, secure server-side flows).

• Clerk (auth, session management, guarded UI states).
• Storyblok or comparable headless CMS.
• Email providers (Mailjet or similar).
• Secure integration patterns: secrets/env management, idempotency, verification of webhooks.
• Data workflows: backfill scripts, pagination, conflict detection, and reconciliation.
• CI-friendly coding: modular architecture, reusable utilities, and robust error/edge handling.
• Solid understanding of SEO/metadata, accessibility, and performance budgets in React apps.
• Familiarity with Figma design tools
• Cross-browser development and testing experience
• Eye for visual consistency and UX best practices
• Experience with email marketing platforms (Mailchimp, Campaign Monitor, MailJet)

Nice to Have

• Advanced frontend polish: scroll/animation performance (Lenis, ScrollTrigger or equivalents).
• Familiarity with Blob/file storage strategies and CDN considerations.
• Observability: structured logging, monitoring, and alerting for serverless/edge environments.
• Experience with QStash/Upstash or equivalent queuing systems.

Hiring Process

We utilize AI tools to enhance our hiring efficiency and ensure a fair evaluation of all candidates. As a result, candidates who passed our initial evaluations should expect an AI Interviewer as a component of our recruitment process. This is supervised by Human Talent Acquisition Experts who will also engage with you throughout your application journey.

Don't meet every single requirement? At Penbrothers we are committed to building a diverse, inclusive, and authentic workplace, so if you're excited about this role but you don't feel 100% aligned with the qualifications, we encourage you to apply anyway. You may just be the right fit for this or other roles.

What You'll Get

At Penbrothers, we are obsessed with creating positive employee experiences. Here you'll find an environment that nurtures learning and provides opportunities for growth. You'll have the opportunity to make an impact on fast-growing startups and dynamic companies.

• Meaningful work & Growth: We take every opportunity to stretch ourselves and deliver an excellent client experience.
• Employee as our biggest asset: We are genuinely invested in our people's career and welfare.
• Global reach & local impact: Get to work with high-growth startups and dynamic companies from the comfort of your own home.
• Powering global startups: We've created 1,400 Filipino jobs that empower global start-ups to focus on growth.