Vamsi Krishna
Visakhapatnam
Summary
Tech Lead with 7+ years of overall software engineering experience designing and delivering scalable, secure distributed systems across backend, frontend, and infrastructure. Core team member at Atoa Payments, contributing to and owning architecture for bank-to-bank and card payment platforms. Strong background in backend and frontend systems, reconciliation and settlement systems, AWS-based infrastructure, Open Banking integrations, system design, and performance optimization, with proven cross-functional collaboration in regulated environments.
Experienced in working in fast-paced startup environments, delivering high-impact products at speed.
Overview
8
8
years of professional experience
2
2
Certifications
Work History
Tech Lead
Atoa Payments Limited
08.2023 - Current
- Lead architecture and delivery of bank-to-bank and card payment platforms, handling critical transaction processing and payment flows.
- Own end-to-end technical decisions across backend, frontend, mobile, and AWS-based infrastructure, ensuring scalability, security, and high availability.
- Build and lead reconciliation systems that verify transaction ledgers and merchant settlements, ensuring financial accuracy, audit readiness, and regulatory compliance.
- Work extensively with multiple banking APIs and credit card provider APIs, designing secure integrations, handling authentication, error recovery, and compliance requirements.
- Implement the porting and onboarding of banks using Dynamic Client Registration (DCR) for Open Banking (OB), enabled by Atoa’s FCA license.
- Design and review backend services, REST APIs, and data models supporting payments, merchants, settlements, and reporting.
- Work directly with C-suite stakeholders to align technical architecture with business strategy, regulatory requirements, and product roadmap.
- Drive architectural improvements for reliability, performance, and fault tolerance in AWS-hosted, regulated payment systems.
- Collaborate with product, engineering, and compliance teams to translate regulatory and business requirements into production-ready solutions.
- Worked directly with C-suite stakeholders on strategy and roadmap.
- Scaled systems from early-stage to millions of transactions.
- Mentor engineers and lead technical and architectural reviews.
Senior Engineer
Atoa Payments Limited
05.2022 - 08.2023
- Built core Atoa products from scratch: Atoa Business, Atoa Pay (iOS & Android), web payment gateway, and merchant dashboard.
- Took platform from launch to large-scale adoption.
- Built backend services using Node.js, NestJS on AWS.
- Designed REST APIs, PostgreSQL models, and async workflows using AWS SQS.
- Integrated banking and payment provider APIs.
- Mentored interns and junior developers.
Mobile Application Developer
KlearCard (Acquired by Validus)
07.2020 - 05.2022
- Acquired by Validus
• Successfully developed and maintain the Klearcard mobile application.
• Effectively helped integrate Xero accounting software with the KlearCard web dashboard.
• Implemented spend category blocking and better notification services for the receipt reminders.
Frontend Developer
Freelance
05.2018 - 07.2020
- Delivered responsive, high-performance web applications.
Education
B.Tech - Electrical Engineering
KL University
Vijayawada11-2012
Skills
Technical Skills
- Prompt Engineering
- Cloud infrastructure(AWS)
- Backend development(Nodejs, python, PHP)
- Frontend development(Vue, Nuxt, Flutter)
- SQL, NoSQL
- Test-driven development
- Agile methodologies
- Solution architecture
Soft Skills
- Problem solving
- Technical leadership
- Mentoring
- Clear Communication
Certification
Featured by Google at a Flutter Event, where an application built by me was showcased as part of a Flutter product demonstration.
https://x.com/r_vamsi_krishna/status/1070247799025885184
https://x.com/r_vamsi_krishna/status/1070247799025885184
Timeline
Tech Lead
Atoa Payments Limited
08.2023 - Current
Senior Engineer
Atoa Payments Limited
05.2022 - 08.2023
Mobile Application Developer
KlearCard (Acquired by Validus)
07.2020 - 05.2022
Frontend Developer
Freelance
05.2018 - 07.2020
B.Tech - Electrical Engineering
KL University