Senior full-stack engineer (P3) on Toast's Accounting Integrations team in Chennai, syncing sales, payments and payroll data into accounting platforms.

This full-time Chennai role was posted on 26 October 2026. The listing describes the Accounting Integrations team, whose integrations sync sales, payments, payroll and supplier data from Toast into accounting platforms so restaurant owners can close their books on time. The role independently designs and implements well-defined features across the full stack, from backend sync services to merchant-facing UI, and builds backend services in Java and Kotlin moving financial data. Requirements include a bachelor's degree in a relevant discipline and 6-9 years of software or full-stack development experience.

About Toast

Toast builds technology for restaurants and local businesses: point-of-sale, payments, and operations software. Its listings describe helping business owners operate, increase sales, engage customers and keep employees happy.

Toast has a Bengaluru engineering centre working on product areas including fraud and risk, per its listings. Learn more on Toast's website.

The role in plain terms

Financial data sync is unforgiving engineering: numbers must reconcile, and the cost of a bug is a merchant's books being wrong. The full-stack shape - backend sync services plus merchant-facing UI - gives the role end-to-end ownership rare in integration teams. The 6-9 year band is precisely drawn, suggesting a clearly scoped senior IC seat. Chennai location is notable: this is one of few Chennai-based roles in this list.

The team and the work

Per the listing, the backend stack is Java and Kotlin, syncing sales, payments, payouts and invoices into external accounting platforms. Integration work means dealing with third-party APIs, rate limits and data-mapping edge cases as daily realities.

What the employer asks for

These requirements are quoted from the employer's listing, kept in their exact words so eligibility details are not distorted:

Bachelor's degree in Computer Science, Engineering or a related discipline
6 to 9 years of experience in software or full stack development.
Strong backend experience in Java, with hands-on Kotlin experience or a clear willingness to become productive in it quickly.
Strong frontend experience with React (or Angular) and TypeScript/JavaScript.
Experience building and consuming RESTful APIs and integrating with third-party systems.
Hands-on experience with a cloud platform, preferably AWS (e.g., ECS/EKS, Lambda, SQS/SNS, S3, RDS/DynamoDB).
AI fluency: regular, practical use of AI coding assistants (e.g., Claude Code, Cursor, Copilot) in your workflow, and good judgment in reviewing and validating AI-generated...
Working knowledge of SQL and NoSQL databases, including schema design and query tuning.

Who this role suits

Full-stack engineers with 6-9 years, comfortable in Java/Kotlin backends and frontend work, who like the precision of financial systems. Not for engineers who find third-party API integration frustrating - that is the core of the job.

Practical notes

For integrations roles, expect questions on idempotency, retry strategy, reconciliation and handling third-party API failures. A story about a data-consistency bug you found and fixed is ideal preparation.

Working at Toast

Engineering and product work at Toast covers restaurant-facing software, payments processing, and the risk systems that protect a large merchant base.

How to apply

Apply directly on the employer's site: Senior Software Engineer, Full Stack at Toast. We found this listing on the Greenhouse public job board (careers.toasttab.com), where it was posted on 26 Oct 2026 and was still open when we checked on 30 Oct 2026. Before applying, re-read the employer's own description in full, since eligibility details, deadlines and process steps can change at any time and the employer's page is always the final word. Tailor your resume to the specific requirements above rather than sending a generic one: mirror the skills and tools the listing names where you genuinely have them. A short, specific note on why this team and this problem interest you goes further than a long generic cover letter. Never pay a fee to apply or interview; genuine employers, including this one, do not charge candidates.

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