Founding Engineer

Weekday (YC W21)

. Design, develop, and maintain scalable backend systems for fintech and financial operations .

Posted 9/18/2026full-timeRemote • IndiaMid-LevelSenior💰 ₹3,000,000 - ₹7,000,000 per yearWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates expertise in designing and developing scalable backend systems for fintech, with a strong focus on financial transaction workflows, API integrations, and data security. Proficient in implementing robust solutions that ensure reliability, performance, and compliance in multi-currency financial operations.

Highest-signal resume keywords

Backend Development ExpertiseFintech Systems IntegrationAPI Development and IntegrationRelational Database ManagementApplication Security and Data Protection

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

TypeScriptNode.jsJavaPythonGoPostgreSQLRedisAutomated TestingCI/CDTransaction Workflows

Soft Skills

Problem-SolvingCommunicationCollaborationOwnershipAdaptability

Tools & Technologies

Cloud PlatformsMonitoring ToolsLogging ToolsProduction OperationsVersion Control (Git)

Industry Keywords

FintechPaymentsBankingFinancial InfrastructureMulti-Currency Transactions

Tech Stack

Tools & technologies

CloudDistributed SystemsJavaJavaScriptNode.jsPostgresPythonRedisTypeScriptGo

About the role

Key responsibilities & impact

Design, develop, and maintain scalable backend systems for fintech and financial operations
Build services supporting business accounts, payments, cards, FX, and multi-currency transactions
Develop robust APIs and integrations with banking, payment, card, and financial infrastructure providers
Implement transaction workflows covering authorization, processing, settlement, failure handling, and reconciliation
Design systems for idempotency, retries, webhooks, transaction state management, and failure recovery
Build and maintain financial ledgers, balances, transaction records, and reconciliation processes
Support multi-currency financial operations, including currency conversion and cross-border transaction workflows
Design accurate, consistent, and auditable financial data models and database structures
Implement secure access controls, authentication, authorization, and protection of sensitive financial data
Build monitoring, logging, alerting, and operational tooling for critical financial workflows
Integrate third-party financial APIs while handling provider-specific behaviours, failures, rate limits, and inconsistencies
Optimize backend services and databases for performance, scalability, reliability, and availability
Write clean, testable, maintainable, production-ready code
Develop unit, integration, and end-to-end tests for critical financial workflows
Troubleshoot production issues, perform root-cause analysis, and implement sustainable fixes
Collaborate with Product, Engineering, Operations, Compliance, and external partners to deliver features end-to-end
Contribute to architecture decisions, technical documentation, engineering standards, and platform strategy
Identify opportunities to automate operational processes and improve system reliability
Own technical deliverables from initial design through deployment and production support

Requirements

What you’ll need

5+ years of professional software engineering experience, with strong backend development expertise
Experience building fintech, payments, banking, financial infrastructure, or other transaction-heavy systems
Strong understanding of backend architecture, distributed systems, APIs, databases, queues, and production infrastructure
Hands-on experience integrating external payment, banking, card, FX, or financial service providers
Strong understanding of financial transaction concepts such as ledgers, reconciliation, balances, settlements, transaction states, and auditability
Practical experience implementing idempotency, retries, webhooks, failure recovery, and transaction consistency
Strong programming skills in a modern backend language such as TypeScript/Node.js, Java, Python, Go, or similar
Strong experience with relational databases such as PostgreSQL and caching technologies such as Redis
Experience working with cloud platforms, APIs, queues, containers, and modern deployment practices
Strong understanding of application security, data protection, access control, and secure API design
Experience with automated testing, CI/CD, Git, monitoring, logging, and production operations
Strong problem-solving and debugging skills with a focus on reliability and data integrity
Ability to work independently and take ownership in a fast-moving, product-focused environment
Strong communication skills and ability to collaborate with technical and non-technical stakeholders
Comfortable working with ambiguity and making practical architectural and engineering decisions
Experience working on international, multi-currency, or cross-border financial products will be an advantage