Principal Full Stack Engineer

As a Principal Full Stack Engineer, you’ll play a pivotal role in leading the architecture, development, and maintenance of our most critical systems — including loyalty engines, coupon frameworks, and integrated QSR applications.

This is a high-impact, leadership-level role requiring deep technical expertise, a hands-on approach, and strong collaboration with stakeholders across engineering, product, and design. You'll also help explore and operationalize AI-powered tools to accelerate our product roadmap.

• Architect and deliver complex systems for loyalty, discounting, and customer rewards — from backend logic and APIs to seamless integrations with web and mobile apps.
• Build and evolve scalable APIs using Node.js, Nest.js, and Express.js (Type Script), enabling dynamic and rule-based engines for core product features.
• Oversee the development and performance of Flutter-based applications used by large QSR brands, ensuring stability, scalability, and user-centric design.
• Design robust relational data models using Postgre
  
  SQL, with efficient caching via Redis to support real-time performance.
• Build secure, performant Graph
  
  QL APIs with Apollo, enabling flexible client-side data access across platforms.
• Deploy, monitor, and scale services in Google Cloud Platform (GCP), leveraging automation and modern Dev Ops practices.
• Set the standard for clean, maintainable, and testable code. Lead code reviews and refactor legacy systems where necessary.
• Collaborate closely with product managers, designers, and engineers to shape technical direction, define requirements, and deliver outcomes.
• Drive the adoption of AI-powered tools to accelerate development, automate issue resolution, and improve engineering efficiency.

• 7–10+ years of experience as a full-stack engineer, with a strong emphasis on backend development and scalable system architecture.
• Proven track record of leading complex technical projects end-to-end, from design to deployment and iteration.
• Deep expertise in:
• Node.js, Nest.js, Express.js (Type Script), Graph
  
  QL and Apollo, Postgre
  
  SQL (relational data modelling) and Redis (caching), Google Cloud Platform (GCP) for deployment, scaling, and monitoring
• Experience with Flutter or the ability to quickly manage and adapt to Flutter-based codebases.
• Domain experience in building loyalty platforms, discounting engines, or other rule-driven systems is highly desirable.
• A solid understanding of performance optimization, cloud infrastructure, and system reliability at scale.
• Excellent communication and stakeholder management skills, with the ability to work cross-functionally across product, design, and engineering teams.

• Experience working with QSRs, retail systems, or other transaction-heavy domains.
• Familiarity with CI/CD pipelines, automated testing frameworks, and observability tools (e.g., Stackdriver, Datadog, Sentry).
• Exposure to AI/ML tools or automation frameworks for accelerating development workflows.
• Experience integrating with third-party platforms such as POS systems, payment gateways, or marketing automation tools.
• Strong product mindset with a focus on usability, performance, and reliability.
• Contributions to open-source projects or active participation in tech communities.