Senior Backend Engineer, Billing & Revenue Systems

Bask Health

About The Position

Bask Health is a software platform that enables entrepreneurs, doctors, and healthcare businesses to launch, manage, and grow direct-to-consumer telehealth businesses. Its platform brings together patient experiences, clinical workflows, pharmacy operations, and commerce tools. The engineering team is entrepreneurial, product-focused, and builder-led, with engineers working closely with product teams and company leadership to take features from idea to production. The team uses AI-assisted tools such as Cursor and Claude Code while maintaining high standards for reliability, testing, and software quality. The Senior Backend Engineer, Billing & Revenue Systems will design, build, and improve backend infrastructure supporting payments, subscriptions, billing workflows, and revenue operations across Bask Health's telehealth platform. The role works on systems connecting merchant configuration, patient checkout, recurring payments, billing records, and financial reporting. It requires strong technical judgment, experience with complex backend systems, and independent ownership of projects from architecture through production. Bask's engineering platform uses TypeScript, Node.js, AWS, SST, and SQL databases, with tRPC, Prisma, and Drizzle among the broader stack technologies. The engineer will collaborate with product managers, engineers, finance, and operations to build scalable systems and ensure billing data is accurate, behavior is predictable, errors are handled clearly, and failures can be recovered reliably.

Requirements

At least 5 years of professional software engineering experience, including substantial hands-on backend development.
Strong proficiency in TypeScript, JavaScript, and Node.js.
Experience designing, building, and maintaining production backend services and APIs.
Professional experience integrating third-party APIs, processing webhooks, or building event-driven backend systems.
Experience working with AWS services and serverless architectures.
Familiarity with AWS Lambda, SQS, EventBridge, or comparable asynchronous processing infrastructure.
Strong experience with SQL databases, relational data modeling, and database schema design.
Experience with modern ORM or database access tools such as Prisma or Drizzle.
Strong understanding of transactional data integrity, consistency, and reliable backend processing.
Experience implementing idempotency, retries, error handling, and recovery mechanisms for critical workflows.
Ability to design backend systems that support complex business rules and state transitions.
Strong understanding of API security, authentication, authorization, and secure handling of sensitive information.
Experience writing automated tests, debugging production systems, and maintaining high software quality.
Ability to independently own complex engineering projects from architecture through deployment.
Experience making architectural decisions and evaluating technical tradeoffs.
Familiarity with Git, code reviews, CI/CD, and modern software development practices.
Ability to use AI-assisted development tools effectively while independently validating generated code.
Strong analytical thinking, attention to detail, and problem-solving skills.
Excellent written and verbal communication skills.
Ability to collaborate with product managers, engineers, finance, and operations teams.
Comfort working in a fast-moving environment with significant ownership and responsibility.

Nice To Haves

Experience building billing infrastructure, payment systems, or subscription management platforms.
Experience integrating Stripe or similar payment processors.
Familiarity with payment intents, webhooks, recurring billing, refunds, disputes, or payment reconciliation.
Experience with subscription lifecycle management, pricing engines, or usage-based billing.
Experience building financial reporting, revenue tracking, or billing reconciliation systems.
Familiarity with transactional database design and payment-related consistency challenges.
Experience with SST and serverless application development on AWS.
Experience with tRPC, Next.js, React, or full-stack TypeScript applications.
Experience working with multi-tenant SaaS platforms or monorepo architectures.
Familiarity with PCI DSS considerations, payment security, or financial data controls.
Experience building internal finance or billing operations tools.
Experience supporting e-commerce checkout, merchant billing, or subscription-based SaaS products.
Experience implementing audit logs, operational monitoring, and alerting for financial workflows.
Experience mentoring engineers or establishing reusable backend architecture.
Experience using Cursor, Claude Code, or similar AI-assisted development tools in production engineering workflows.

Responsibilities

Design, develop, and maintain backend services for billing, payments, subscriptions, and revenue-related workflows.
Build and improve integrations with payment processors and external billing services.
Develop APIs and application logic for subscription creation, renewals, cancellations, plan changes, and payment status updates.
Implement pricing, discount, trial, and billing configuration logic across merchant and patient workflows.
Design reliable processing for payment events, webhooks, and asynchronous billing updates.
Build services using TypeScript, Node.js, AWS, SST, and SQL databases, including AWS Lambda, SQS, EventBridge, and related services.
Design database schemas and data models for transactions, subscriptions, invoices, billing events, and financial records.
Develop mechanisms to prevent duplicate charges, inconsistent billing states, and lost payment events.
Implement retry logic, idempotency, validation, and error handling for payment-related operations.
Build reconciliation processes to identify discrepancies between internal billing records and external payment providers.
Improve the reliability, performance, and maintainability of existing billing services.
Collaborate with finance and operations teams on billing issues, reporting needs, and operational requirements.
Work with product managers and engineers to translate business requirements into technical designs.
Develop internal tools and workflows to make billing issues easier to investigate and resolve.
Build access controls, audit trails, and safeguards around sensitive billing information.
Create automated tests for billing calculations, subscription transitions, payment failures, and other edge cases.
Investigate production incidents, identify root causes, and implement durable fixes.
Improve monitoring, logging, alerting, and visibility into billing system performance.
Review code, provide technical guidance, and contribute to engineering standards.
Own complex billing initiatives from design and implementation through deployment and production support.
Use AI-assisted development tools while independently validating correctness, security, and maintainability.
Establish reusable billing architecture that supports additional products, merchants, and business models.