Senior Backend Billing Engineer - Fintech & SaaS Growth

Bask Health; United States; Remote; USD 160,000 - 220,000; Full time

Job summary

Bask Health is seeking a Senior Backend Engineer, Billing & Revenue Systems, to design, build, and enhance backend infrastructure supporting payments, subscriptions, and revenue operations across its telehealth platform.

You will ensure reliable processing of transactions, accurate financial data, and scalable billing workflows using TypeScript, Node.js, AWS, SST, and SQL databases. This role emphasizes ownership and collaboration with cross-functional teams.

Qualifications

• 5+ years of professional software engineering experience with backend development.
• Experience designing and maintaining production backend services and APIs.
• Experience integrating third-party APIs, processing webhooks, or event-driven architectures.
• Experience with AWS services and serverless architectures.
• Familiarity with SQL databases and modern ORM tools like Prisma or Drizzle.

Responsibilities

• Design, develop, and maintain backend services for billing, payments, subscriptions, and revenue workflows.
• Build integrations with payment processors and external billing services.
• Develop APIs and logic for subscriptions, renewals, cancellations, and billing status updates.
• Create pricing, discount, trial, and billing configuration across merchant and patient workflows.
• Implement idempotent processing, retries, and error handling for billing operations.
• Collaborate with finance and operations to understand reporting needs and requirements.
• Translate business requirements into technical designs and build reusable billing architecture.

Skills

Backend development

AWS serverless

TypeScript/Node.js

SQL databases

Event-driven architecture

API design

Stripe integrations

Tools

Prisma

Drizzle

tRPC

SST

Cursor

Claude Code

Job description

Senior Backend Billing Engineer - Fintech & SaaS Growth in Newark

Career Development: This role sits at the intersection of two high-demand specializations — backend distributed systems and fintech/billing infrastructure. Engineers with deep experience in payment systems, subscription lifecycle management, and idempotent event-driven architecture are consistently among the highest-paid backend specialists in the market.

Compensation Benchmarks: No salary is listed. Senior Backend Engineers in the US with billing/payments expertise typically earn $160,000–$220,000+ annually at funded startups and scale-ups. Without a posted range, candidates should anchor expectations at the high end given the specialized domain.

Skills You’ll Build:

• AWS serverless architecture: Lambda, SQS, EventBridge at scale
• AI-assisted development workflows (Cursor, Claude Code) — an emerging differentiator
• TypeScript/Node.js in a modern SST/tRPC stack
• Healthcare SaaS domain knowledge (high regulatory value)

Company Stage Signals: Bask Health reads as an early-to-mid-stage startup — "entrepreneurial," "builder-led," engineers owning features from idea to production, and direct access to company leadership. This means higher ownership and impact but also more ambiguity and potential resource constraints.

Green Flags: AI-first engineering culture signals forward-thinking practices; cross-functional collaboration with finance and ops is valuable for career breadth; the billing domain is durable and in high demand across all SaaS verticals.

Red Flags to Probe: No salary range posted, no mention of benefits, PTO, or equity — all worth clarifying before advancing in the process.

About Bask Health

Bask Health is a software platform that enables entrepreneurs, doctors, and healthcare businesses to launch, manage, and grow direct-to-consumer telehealth businesses.

Our platform brings together patient experiences, clinical workflows, pharmacy operations, and commerce tools in one place.

We’re an entrepreneurial, product-focused engineering team that values ownership, technical excellence, and building software that solves real problems. Engineers work closely with product teams and company leadership, take features from idea to production, and have a direct role in shaping the platform.

Engineering at Bask is AI-first and builder-led. We use tools like Cursor and Claude Code throughout development while maintaining high standards for reliability, testing, and software quality.

About the Role

We’re looking for a Senior Backend Engineer, Billing & Revenue Systems to design, build, and improve the backend infrastructure supporting payments, subscriptions, billing workflows, and revenue operations across Bask Health's telehealth platform.

You will work on systems that connect merchant configuration, patient checkout, recurring payments, billing records, and financial reporting. Your work will help ensure transactions are processed reliably, subscription changes are handled correctly, and financial information remains accurate across the platform.

This is a hands-on engineering role requiring strong technical judgment, experience with complex backend systems, and the ability to independently own projects from architecture through production.

Bask's engineering platform uses TypeScript, Node.js, AWS, SST, and SQL databases, with technologies including tRPC, Prisma, and Drizzle in our broader stack.

You’ll collaborate with product managers, engineers, finance, and operations teams to develop scalable systems that support the financial side of running telehealth businesses.

We’re looking for someone who understands that billing systems need more than functional code — they need accurate data, predictable behavior, clear error handling, and reliable recovery when something goes wrong.

What You’ll Do

• Design, develop, and maintain backend services supporting 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.
• Help 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.
• Use AWS Lambda, SQS, EventBridge, and related services to support event-driven billing workflows.
• 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.
• Help build reconciliation processes that 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 to understand 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 that make billing issues easier to investigate and resolve.
• Build appropriate access controls, audit trails, and safeguards around sensitive billing information.
• Create automated tests covering 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.
• Take ownership of complex billing initiatives from design and implementation through deployment and production support.
• Use Cursor, Claude Code, and other AI-assisted development tools to accelerate development while independently validating correctness, security, and maintainability.
• Help establish reusable billing architecture that supports additional products, merchants, and business models.

Requirements

• 5+ years of professional software engineering experience, including substantial hands-on backend development.
• 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.
• Comfortable working in a fast-moving environment with significant ownership and responsibility.

Nice to Have

• 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 working 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.

Is this role fully remote or does it require working from an office? The job posting does not specify an office location or in-person requirement, suggesting it is a remote position within the United States. Candidates should confirm the remote policy and any timezone requirements during the interview process.

What tech stack does Bask Health use for this billing role? Bask Health's engineering stack includes TypeScript, Node.js, AWS (Lambda, SQS, EventBridge), SST, SQL databases, tRPC, Prisma, and Drizzle. AI-assisted development tools such as Cursor and Claude Code are also used throughout development.

What is the minimum experience required for this position? The role requires 5+ years of professional software engineering experience with a strong focus on hands-on backend development, including experience with AWS services, SQL databases, event-driven architectures, and third-party API integrations.

Is prior experience with billing or payment systems required? It is listed under "Nice to Have" rather than requirements — experience with billing infrastructure, Stripe integrations, subscription management, or payment reconciliation is preferred but not strictly mandatory.

What salary can I expect for this role? No salary range is provided in the job posting. Senior backend engineers specializing in billing and payments at US startups typically earn between $160,000 and $220,000+ annually; candidates are encouraged to discuss compensation expectations directly with Bask Health.

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