Senior Fullstack Engineer

At Vayu, your code will directly power how companies generate revenue from their product usage.

You'll design backend systems that process real-time events, agentic financial workflows, and financial data at scale.

Vayu is a revenue and billing management platform for modern companies.

As companies shift from static pricing to usage- and value-based models, the financial infrastructure required to support them is becoming exponentially more complex.

At Vayu, we’re building the financial backbone for this new era, enabling companies to power complex billing, real-time usage metering, and automated financial workflows at scale.

We’re looking for a Senior FullStack Developer for that effort.

Role Description

• End-to-end ownership: You will build features from concept to launch, from designing backend architecture and managing infrastructure, through writing tests and automations, to extending capabilities in our developer-facing APIs and SDKs.
• High-impact challenges: Design and maintain scalable real-time event metering, complex billing logic, and integrations- all while ensuring data integrity and multi-language SDK support.
• Modern tech stack: You will leverage serverless architectures, real-time streaming, SQL and NoSQL databases, and large-scale batch processing to build scalable, reliable systems.
• Teamwork that drives results: You will collaborate closely with developers, QA, designers, and even customers to stay aligned and deliver impactful solutions together.
• Career growth opportunities: A rare opportunity to expand your tech skills, build from scratch, take on new challenges, and lead technically.

Qualifications

• System-level thinking: You understand how complex, event-driven systems work end to end, can follow how data flows, identify edge cases, and design for performance and scalability.
• Solid understanding of databases - SQL or NoSQL, knowing how to model, query, and optimize effectively.
• Experience building APIs that are clean, consistent, and used by other developers (bonus for SDK design).
• Strong ownership mindset: You take full responsibility for the systems you build, with a deep focus on quality, performance, and long-term maintainability.‍
• Great communication skills: You explain complex ideas in a clear and structured way, engage in thoughtful technical discussions, and help align engineers, product, and stakeholders around smart decisions.