Senior Full Stack Engineer

Requisitos y responsabilidades

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About the role

We are looking for a Senior Full Stack Engineer to build and integrate components of a financial intelligence platform designed for AI consumption, working across Python, Node.js, and React with Vercel deployments. You will design backend billing logic and chargeback systems, integrate Azure billing data sources, and build data-dense dashboards that surface AI usage metrics and ROI insights. The role requires strong autonomy and comfort turning incomplete requirements into working product. This is a 6-month project engagement.

What you will do

Own the implementation and integration of existing product components, including AI usage dashboards and advisor insights;
Design and build backend functionality to support billing rules, chargeback logic, and ROI calculation for AI usage;
Integrate external billing data sources, starting with Microsoft Azure billing systems;
Build and evolve APIs and data pipelines that translate raw billing data into usable financial insights;
Implement frontend functionality to surface metrics, dashboards, and data-heavy UI views clearly and pragmatically;
Make sound architectural decisions at a medium level of complexity, prioritizing maintainability and speed;
Collaborate closely with product stakeholders, operating with minimal process overhead;
Ensure smooth deployment and delivery workflows using Vercel;
Contribute to overall product cohesion by connecting disparate parts into a single, usable experience.

Must haves

4+ years of experience and strong full-stack background with proven ability to move across frontend, backend, and integrations;
Solid experience with Python, and Node.js, in production environments;
Experience designing and working with PostgreSQL schemas and data models;
Direct experience integrating Azure billing systems or similar cloud cost and usage APIs;
Experience building frontend applications deployed via Vercel (React or similar frameworks);
Experience with Claude Code;
Strong experience consuming and integrating third-party APIs, especially billing or usage-based systems;
Demonstrated ability to work with incomplete requirements and turn them into working solutions;
Comfortable operating in early-stage product environments with limited structure;
Professional working proficiency in English;
Experience integrating frontend tests into CI/CD pipelines (GitHub Actions or similar);
Familiarity with observability and usage tracking concepts (e.g., OpenTelemetry or similar telemetry systems);
Experience building or consuming SDKs is a strong plus.