About the Role

Buildfire is entering its next engineering phase, where AI is embedded into production systems, internal automation, and platform level capabilities.

We are looking for a Senior Full-Stack Engineer who thinks in systems, not tickets. Someone who can design end-to-end solutions, make architectural decisions, operate with high ownership, and apply AI pragmatically to solve real problems at scale.

You will contribute to an ecosystem powering 12,000+ published mobile applications.

This role requires high adaptability and comfort operating in a fast-moving, multi-domain engineering environment.

What You’ll Work On

• Designing and building scalable backend services (Node.js required)

• Developing frontend web apps and mobile web views

• Maintaining and evolving production Buildfire plugins

• Architecting AI-powered workflows (OpenAI APIs, RAG, embeddings, vector systems)

• Working with AWS and serverless architecture

• Building and maintaining microservices

• Refactoring legacy systems without disrupting production stability

• Debugging complex cross-layer production issues

• Integrating and troubleshooting production-grade third-party systems (OAuth flows, enterprise APIs, search engines, payment infrastructure, analytics pipelines, etc.)

• Improving performance, reliability, and maintainability across the platform

You should be comfortable moving between backend, frontend, infrastructure, and AI work within the same week.

What Defines “Senior” Here

We’re not looking for years of experience alone. We’re looking for engineers who:

• Have designed and shipped systems end-to-end

• Make architectural decisions and define technical direction for owned initiatives

• Take responsibility for technical outcomes beyond implementation

• Balance trade-offs between speed, scalability, and complexity

• Are comfortable operating with ambiguous or evolving requirements

• Can shape scope when it’s not fully defined

• Propose multiple solution approaches with clear pros and cons

• Identify architectural weaknesses before they become incidents

• Understand performance trade-offs and system bottlenecks

• Prioritize maintainability and long-term clarity over short-term hacks

• Elevate engineers around them through thoughtful code reviews and mentorship

• Communicate trade-offs clearly to both technical and non-technical stakeholders

Operational & Production Ownership

• Experience running and maintaining live production services

• Monitor, maintain, and improve systems after launch

• Familiarity with alerting, monitoring, dashboards, and observability practices

• Participate in incident response and postmortem analysis

• Detect and resolve performance regressions

• Responsible for the operational health and reliability of owned services

Platform & Scaling Mindset

• Design systems for growth, multi-tenant behavior, and evolving requirements

• Consider data lifecycle, migrations, and backward compatibility

• Plan extensibility rather than feature-specific solutions

• Reduce long-term technical complexity through strong architectural decisions

Technical Requirements

• 5+ years professional experience

• Strong Node.js (mandatory)

• Strong JavaScript (Vanilla required; frameworks are a plus)

• Experience designing REST APIs and microservices

• Strong MySQL (schema design, indexing, optimization)

• Experience with MongoDB and Firebase

• AWS & serverless architecture

• CI/CD experience

• Strong debugging across full stack

• Understanding of API security, authentication flows, and data protection best practices

AI Requirements

• Hands-on experience with OpenAI APIs

• Experience implementing RAG architectures

• Familiarity with embeddings and vector databases

• Ability to apply AI in practical, production-grade environments (not just experimentation)

Engineering Culture

We value engineers who:

• Care deeply about clarity, maintainability, and long-term system health

• Take ownership of outcomes, not just assigned tasks

• Prefer thoughtful solutions over rushed patches

• Are comfortable challenging ideas with technical reasoning

• See debugging as investigation, not frustration

• Improve internal tooling and developer workflows proactively

We operate with high autonomy and high accountability. There is minimal micromanagement — but strong expectations around quality, ownership, and delivery.

Work Environment

• Fully Remote

• Daily working overlap with PST timezone (mandatory)

• Bachelor’s degree in Computer Science or related field