Tabs

Senior Software Engineer, Merchant Onboarding

Tabs1 weeks ago
Location

New York City, NY

Type

Full Time

Salary

USD 175,000 – 240,000

Level

Senior

Role

Senior Software Engineer

Posted

Jul 14, 2026

Full TimeSenior

The role

Summary

Senior Software Engineer role at Tabs, the AI-native revenue platform for modern finance teams, focused on building and scaling the Merchant Onboarding team. This 0→1 engineering opportunity involves designing end-to-end systems, APIs, and product surfaces across a full stack (TypeScript/Node, React/Next.js, PostgreSQL), with emphasis on system ownership, data modeling, and production reliability in a fast-moving fintech environment.

What you'll do

Design and implement core backend services and APIs: Build scalable backend architecture serving the merchant onboarding pipeline, collaborating with product teams to translate business requirements into robust, maintainable API designs. Architect systems that handle complex data flows, payment reconciliation, and real-time processing while ensuring high availability and fault tolerance.
Develop product-facing interfaces and internal tools: Create intuitive user interfaces and administrative tools that simplify complex financial concepts for both internal teams and external customers. Build responsive product surfaces using modern frontend frameworks that improve operational efficiency and user satisfaction.
Establish reliability and observability infrastructure: Implement monitoring, logging, and alerting systems to maintain high system reliability and enable rapid incident response. Develop observability tooling that provides actionable insights into system performance and helps teams move quickly with confidence in production environments.
Own full system lifecycle from design to production: Take end-to-end ownership of features and systems, from architectural design and implementation through testing, deployment, and production troubleshooting. Manage operational aspects including performance optimization, edge case handling, and long-term system maintenance across the merchant lifecycle.
Collaborate cross-functionally with product and design teams: Participate in design discussions, whiteboard sessions, and architectural reviews to align engineering decisions with product vision. Contribute to system design documentation, technical specifications, and architectural decisions that shape platform evolution.
Drive data modeling and schema design excellence: Design database schemas and data models that support complex financial workflows including billing, revenue recognition (ASC 606 compliance), and payment reconciliation. Optimize for correctness, queryability, and long-term maintainability while supporting rapid iteration and scaling.

What we look for

Technical

Backend service architectureStrong fundamentals in designing scalable backend systems including microservice patterns, asynchronous processing, and managing distributed data flows. Understanding of system design considerations like load balancing, caching strategies, and handling eventual consistency.
Database design and optimizationProficiency with relational databases and SQL optimization, including schema design for complex workflows, indexing strategies, and query performance tuning. Experience with transaction management and ensuring data integrity in multi-step financial processes.
API design and integrationExperience designing clean, maintainable APIs that integrate smoothly with frontend applications and third-party systems. Understanding of versioning, deprecation strategies, and maintaining backward compatibility in evolving platforms.
System reliability and observabilityPractical experience implementing monitoring, logging, and alerting systems that enable teams to understand system behavior and respond quickly to incidents. Familiarity with performance profiling, bottleneck identification, and optimization techniques.

Education

Computer Science degree or equivalent practical experienceBachelor's degree in Computer Science, related technical field, or equivalent industry experience demonstrating deep software engineering knowledge. Formal education or equivalent self-directed learning covering core CS concepts applicable to systems design.

Experience

5-8 years professional software engineering experienceDemonstrated track record of building and shipping production software at scale, with proven ability to navigate complex technical challenges and deliver results in fast-paced environments. Experience should include designing systems, managing technical tradeoffs, and taking ownership of features from conception through deployment.
Production web application and backend services developmentHands-on experience building and maintaining scalable web applications or backend services that power real users. Should demonstrate understanding of production concerns including reliability, performance, monitoring, and incident response.
Modern backend framework and language proficiencySolid working knowledge of contemporary backend languages and frameworks used for building APIs and microservices. Experience with language ecosystems, dependency management, testing patterns, and deployment practices that enable rapid development iteration.
Full-stack capability with frontend frameworksComfortable building user interfaces using modern frontend frameworks such as React, Vue, or similar. Ability to work across the stack from database schemas through backend services to frontend components, understanding how all layers interact in production systems.
Database and API design experienceHands-on experience designing and working with relational databases, including schema design, query optimization, and managing data consistency. Strong grasp of API design principles, REST patterns, and building interfaces that integrate cleanly with backend systems.

Skills

Required skills

TypeScriptPrimary backend language for Tabs platform. Strong TypeScript skills enable building type-safe, maintainable backend services and contribute to code quality and developer productivity across teams.
Node.jsCore runtime environment for backend services at Tabs. Proficiency includes event-driven architecture, async/await patterns, and managing Node.js performance characteristics in production systems.
ReactPrimary frontend framework for building user interfaces and product surfaces. Experience with React enables building responsive, interactive UIs for financial workflows used by accounting and finance teams.
PostgreSQLPrimary relational database powering Tabs platform. Expertise includes schema design, query optimization, transaction management, and ensuring data consistency in mission-critical financial systems.
System design and architectural thinkingAbility to design scalable, reliable systems considering tradeoffs between consistency, availability, performance, and operational complexity. Understanding of how individual components interact in production and planning for growth.
Production debugging and troubleshootingHands-on ability to diagnose issues in production systems, analyze logs and metrics, identify root causes, and implement fixes. Experience managing incidents and learning from production edge cases.

Nice to have

NestJSTypeScript backend framework used at Tabs for building scalable server-side applications. Experience with NestJS accelerates onboarding and enables contributors to follow established architectural patterns.
Next.jsReact meta-framework for building full-stack applications with improved performance and developer experience. Familiarity with Next.js enables building product interfaces that scale effectively.
RedisIn-memory data store used for caching, rate limiting, and real-time features. Experience with Redis helps optimize system performance and handle high-throughput scenarios.
Temporal workflow engineDistributed workflow orchestration tool used at Tabs for managing complex, long-running processes like merchant onboarding and billing cycles. Familiarity with Temporal accelerates development of robust, auditable workflows.
Fintech domain knowledgeUnderstanding of financial concepts including revenue recognition (ASC 606), billing systems, payment processing, and accounting workflows. Fintech experience accelerates domain learning though not required.
Observability and monitoringExperience implementing comprehensive monitoring, structured logging, and distributed tracing. Ability to instrument systems and build dashboards that enable rapid problem diagnosis in production.

Compensation & benefits

Salary

USD 175,000 – 240,000 (annual)

Stock options

Available

Benefits

Competitive compensation and equity

Market-rate salary commensurate with experience plus meaningful equity stake in rapidly-growing fintech company, aligning engineer interests with long-term company success and enabling wealth creation.

Comprehensive healthcare coverage

Up to 100% employer-paid healthcare premiums covering medical, dental, and vision insurance, plus free One Medical membership for preventive care and convenient access to physicians.

Unlimited paid time off

Flexible PTO policy enabling engineers to manage work-life balance and take time off as needed for rest, personal projects, and family priorities without constraining days available.

Meal and commute benefits

Lunch and dinner provided daily via Sharebite for onsite employees, plus tax-free commuter and parking benefits reducing transportation costs for NYC office commute.

Parental leave

Up to 12 weeks of paid parental leave supporting family building and enabling engineers to bond with new children without financial pressure or job security concerns.

Retirement planning

401(k) retirement savings plan with employer support for long-term financial security and tax-advantaged wealth accumulation aligned with career longevity.

Voluntary insurance programs

Additional voluntary insurance options including life, hospital, critical illness, and accident coverage providing supplemental financial protection for engineers and families.

Employee wellness program

Employee Assistance Program (Rightway) offering confidential mental health support, counseling, and wellness resources supporting engineer wellbeing and resilience.

Interview process

  1. 1
    Initial screening call — Conversation with recruiting team to understand your background, engineering experience, and interest in Tabs' mission and merchant onboarding challenges. Discuss career goals and alignment with role expectations.
  2. 2
    Technical discussion — Technical conversation with senior engineers covering system design, past projects, architectural decisions, and problem-solving approach. Discussion focuses on your ability to own complex systems end-to-end and work through production challenges.
  3. 3
    Coding assessment or design exercise — Either a timed coding problem evaluating algorithmic thinking and code quality, or a system design exercise assessing ability to architect scalable systems handling complex merchant onboarding workflows.
  4. 4
    Cross-functional team interviews — Conversations with members of the Merchant Onboarding team and cross-functional partners in product and design. Evaluates collaboration style, communication, and ability to partner effectively in fast-moving environment.
  5. 5
    Leadership and values discussion — Final conversation with engineering leader covering team culture, learning approach, handling ambiguity, and alignment with Tabs values around ownership, correctness, and teamwork. Opportunity to discuss role impact and growth opportunities.
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Tabs

Tabs

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Tabs is a financial technology company that provides restaurant and hospitality business management solutions. The platform offers point-of-sale (POS) systems, inventory management, accounting, and operational tools designed specifically for restaurants, bars, and other food service establishments. Tabs helps hospitality businesses streamline their operations, reduce costs, and improve profitability through integrated software solutions built for the modern restaurant industry.

London, United KingdomFounded 2016tabs.com

Tech Stack

Languages
TypeScriptJavaScript/JSXSQL
Frameworks
NestJSReactNext.js
Databases
PostgreSQLRedis
Tools
TemporalGit and version controlContainer and deployment infrastructure
Other
REST API designRelational data modelingAsynchronous processing patternsSystem observability
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