Sr. Full Stack Developer

We are seeking a Sr. Full Stack Developer to take ownership of complex, production-grade systems. This role requires more than strong coding ability. The successful candidate must be capable of making sound architectural decisions, solving high-impact technical problems, and connecting backend systems with responsive, real-time frontend experiences.

The ideal candidate has personally owned systems operating at significant scale and understands the consequences of technical decisions involving performance, concurrency, reliability, payments, and customer data.

• →Design, build, and maintain scalable applications across the backend and frontend.
• →Make and own architectural decisions for production systems.
• →Develop reliable server-to-browser interactions and real-time user experiences.
• →Design PostgreSQL data models with appropriate transactions, locks, constraints, and performance considerations.
• →Use Redis in production for caching, pub/sub messaging, and distributed locking.
• →Build and maintain WebSocket-based features supporting high levels of concurrent activity.
• →Implement and maintain payment integrations, including subscriptions, refunds, and reliable webhook processing.
• →Develop and release LLM-powered functionality for external customers.
• →Diagnose production issues where defects could result in financial loss, data problems, service disruption, or other material impact.
• →Use LLM-based development tools responsibly to improve engineering productivity and code quality.
• →Communicate technical decisions, risks, and tradeoffs clearly with company leadership and other stakeholders.

• At least 7 years of professional experience as a Full Stack Software Engineer/Developer.
• Good English communication skills with the ability to clearly articulate technical decisions.
• At least 5 years of professional experience designing and developing full-stack production applications using Node.js & TypeScript or Python, React (or equivalent), JavaScript, HTML5, CSS3, REST APIs, HTTP/HTTPS, JSON, Git, npm/pip.
• At least 5 years of professional experience designing and optimizing relational databases, including transactions, concurrency, locking, schema design, constraints, indexing, and performance tuning using PostgreSQL, SQL, and Relational Database Management Systems (RDBMS).
• At least 3 years of production experience implementing distributed caching, messaging, and synchronization using Redis, Pub/Sub, Distributed Locks, In-Memory Data Stores, and developing WebSocket-based real-time applications over TCP/IP.
• At least 3 years of production experience implementing payment processing, subscriptions, refunds, and reliable webhook handling using Stripe (or equivalent Payment Gateway), REST APIs, HTTPS, JSON, and webhooks.
• At least 2 years of experience developing and releasing production-ready AI-powered features using LLM APIs, AI SDKs, Prompt Engineering tools, while supporting complete end-to-end application development.

• Experience contributing to or owning large-scale production systems serving hundreds of thousands or millions of users.
• Experience making significant architectural decisions for production-grade software systems.
• Experience supporting mission-critical systems where failures could impact financial transactions, data integrity, security, or business operations.
• Strong structured thinking with the ability to independently troubleshoot and solve complex production issues.
• Experience communicating technical risks, trade-offs, and architectural decisions with technical and business stakeholders.
• Experience taking ownership and accountability for technical decisions and production outcomes.

🕒 Work Schedule: 9:00 PM - 5:00 AM Philippine time

🚀 Engagement: Full-time engagement

💎 What You’ll Get

• Above-market compensation.
• Long-term opportunity.
• Opportunity to shape user-facing experiences that reach thousands of users.
• Collaborative, growth-oriented work culture.
• Enjoy a Signing Bonus of PHP 50,000 upon joining!

🚨 Don’t Meet Every Requirement?

No worries. If you're a strong developer and eager to grow, we encourage you to apply! We’re always looking for exceptional people—even if they don’t check every box.

💬 Referral Program – Earn While You Help!

Know someone who’s a great fit for this role?

Refer a candidate and earn up to ₱20,000 per successful hire. There’s no limit—refer as many qualified developers as you like!