ApplySarthiSenior Fullstack Engineer (AI Fluent)
Payoneer
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896 open fullstack roles across 179 companies are on ApplySarthi right now, most of them in Bengaluru (23), Hyderabad (17), Pune (3).
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What fullstack roles keep asking for: React (32%), TypeScript (25%), Java (19%), Agile (18%), Python (16%), JavaScript (16%), CI/CD (15%), Kubernetes (15%) — counted across their open postings here.
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Payoneer has 100 open roles listed here.
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Counted across 14 company job boards, updated as roles open and close.
Preparing for this interview
Interviews for fullstack roles keep coming back to React, TypeScript, Java, Agile. Practise those questions before you sit with Payoneer.
Questions you are likely to be asked
- Why do you want to join Payoneer?
- What is your experience with Microservices? Tell me one thing you learned the hard way.
- Walk me through a model you built, from the data to how it was used.
- How did you know your model was actually good, and not just good on your test set?
- Tell me about a time the data was messy or wrong. What did you do?
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Practise the Senior Fullstack Engineer (AI Fluent) at Payoneer interview free →About Payoneer
Founded in 2005, Payoneer is the global financial platform that removes friction from doing business across borders, with a mission to connect the world’s underserved businesses to a rising global economy. We’re a community with over 2,500 colleagues all over the world, working to serve customers, and partners in over 190 countries and territories.
By taking the complexity out of the financial workflows–including everything from global payments and compliance to multi-currency and workforce management, to providing working capital and business intelligence–we give businesses the tools they need to work efficiently worldwide and grow with confidence.
Glilot
Hybrid
Full-time
As a Senior Fullstack Engineer on Payoneer’s Customer Security team, you will play a key role in building and securing the experiences that protect millions of customers worldwide. You will work across both backend and frontend, developing scalable microservices and modern, secure user interfaces that power authentication, login, multi-factor authentication (MFA), and account protection.
This is an opportunity to take end-to-end ownership of complex, high-impact features, from backend architecture and APIs to frontend implementation and production. You will contribute to our cloud transformation and help shape how we build software using AI-powered development tools and agents.
What you'll do:
- Design, develop, and maintain end-to-end fullstack features, working across scalable backend services and customer-facing frontend applications.
- Build and enhance secure, responsive, and intuitive user interfaces using React, with a focus on login, authentication, MFA, and account protection experiences.
- Develop reusable frontend components and integrate them with backend APIs and microservices.
- Design and implement scalable, secure, and reliable backend services supporting millions of customers worldwide.
- Own complex features end to end, from requirements and system design through development, deployment, monitoring, and production support.
- Develop and maintain distributed, microservices-based systems, ensuring high availability, performance, and scalability.
- Take an active role in modernizing our systems and transitioning from on-premises infrastructure to cloud-native architectures.
- Collaborate closely with Product, UX/UI, Architecture, Security, and other engineering teams to deliver seamless and secure customer experiences.
- Leverage AI-powered development tools and agents to accelerate development, improve code quality, and optimize engineering workflows.
- Contribute to technical decisions, architectural discussions, and continuous improvements across the engineering organization.
Who you are:
Experience
- 7+ years of hands-on software development experience, with a strong backend foundation and experience building fullstack applications.
- Strong proficiency in C#/.NET, Java, Node.js, or similar backend technologies.
- Hands-on experience with modern frontend frameworks, preferably React.
- Experience developing customer-facing web applications, building reusable UI components, and integrating frontend applications with backend APIs.
- Proven experience designing, developing, and maintaining microservices-based architectures.
- Strong experience with complex, production-scale distributed systems.
- Solid understanding of software architecture, system design, and engineering best practices.
- Experience working with SQL and NoSQL databases.
- Experience with messaging and event-driven systems such as Kafka, RabbitMQ, or AWS SQS.
- Familiarity with cloud environments and container orchestration technologies such as Kubernetes.
- Hands-on experience integrating AI-powered tools into daily development workflows, beyond basic code assistance.
- Strong ownership mindset, with the ability to independently drive solutions from initial requirements to production.
- Excellent problem-solving skills, adaptability, and the ability to thrive in a dynamic engineering environment.
What could set you apart
- Strong hands-on experience with React and modern frontend development practices.
- Previous experience developing end-to-end fullstack applications in complex, large-scale environments.
- Experience with authentication, authorization, identity management, MFA, or account security.
- Experience with C#/.NET and MongoDB.
- Familiarity with AI Agents, MCP, model selection, AI workflows, and orchestration.
- Experience implementing AI-powered capabilities or agents in production environments.
- Experience migrating applications from on-premises infrastructure to cloud environments.
#LI-MP2
The Payoneer Ways of Working
Act as our customer’s partner on the inside
Learning what they need and creating what will help them go further.
Do it. Own it.
Being fearlessly accountable in everything we do.
Continuously improve
Always striving for a higher standard than our last.
Build each other up
Helping each other grow, as professionals and people.
If this sounds like a business, a community, and a mission you want to be part of, apply today.
We are committed to providing a diverse and inclusive workplace. Payoneer is an equal opportunity employer, and all qualified applicants will receive consideration for employment no matter your race, color, ancestry, religion, sex, sexual orientation, gender identity, national origin, age, disability status, protected veteran status, or any other characteristic protected by law. If you require reasonable accommodation at any stage of the hiring process, please speak to the recruiter managing the role for any adjustments. Decisions about requests for reasonable accommodation are made on a case-by-case basis.
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Listed on greenhouse · posted 2026-11-15. ApplySarthi collects openings and links to application pages; the role is advertised by Payoneer, not by us.