Senior Java Developer - Payment Gateway/Ecommerce Product

Keka Technologies Private Limited; Pune District; On-site; INR 900,000 - 1,200,000; Full time

Job summary

Keka Technologies Private Limited in Pune (Baner) is seeking an experienced Java Backend Engineer to design, develop, and maintain scalable microservices and checkout/payment workflows. You will work on high-scale enterprise applications used globally and collaborate with cross-functional teams in an agile environment.

The role emphasizes strong Java, Spring, REST APIs, and payment gateway integration experience, with on-site work five days a week at Pune Baner.

Qualifications

• 5–10 years of backend development experience.
• Strong expertise in Java, Spring Boot, Spring MVC, Hibernate/JPA.
• Hands-on experience with Microservices Architecture and REST APIs.
• Experience with SQL/NoSQL databases and Payment Gateway Integrations.

Responsibilities

• Design, develop, and maintain scalable backend applications using Java and Microservices.
• Build secure, high-performance REST APIs and distributed services.
• Develop and enhance Checkout platforms and Payment Gateway integrations for seamless payment processing.
• Collaborate with Product, Architecture, QA, and DevOps teams throughout the SDLC.
• Participate in system design, architecture discussions, and technical decision-making.
• Ensure high code quality through unit testing, code reviews, and engineering best practices.
• Build and support CI/CD pipelines and containerized deployments.
• Troubleshoot production issues, optimize performance, and improve application reliability.
• Mentor junior engineers and contribute to engineering excellence.

Skills

Java

Spring Boot

Spring MVC

Hibernate/JPA

Microservices

REST APIs

SQL/NoSQL

Payment Gateway Integration

Docker

Kubernetes

CI/CD

Git

Agile

Debugging

Tools

Docker

Kubernetes

Jenkins

Job description

5 - 10

Pune

Full-Time

Experience: 5–10 Years

Location: Pune (Baner) – Work from Office (5 Days a Week)

About the Role

We are looking for passionate Java Backend Engineers to build highly scalable, high-performance enterprise applications used by millions of users globally. The ideal candidate should have strong experience in Java, Microservices, Payment Gateway integrations, and Checkout platform development, with a product engineering mindset.

Candidates from FinTech, E-commerce, Payments, or Product-based companies will be preferred.

Key Responsibilities

• Design, develop, and maintain scalable backend applications using Java and Microservices.
• Build secure, high-performance REST APIs and distributed services.
• Develop and enhance Checkout platforms and Payment Gateway integrations for seamless payment processing.
• Collaborate with Product, Architecture, QA, and DevOps teams throughout the SDLC.
• Participate in system design, architecture discussions, and technical decision‑making.
• Ensure high code quality through unit testing, code reviews, and engineering best practices.
• Build and support CI/CD pipelines and containerized deployments.
• Troubleshoot production issues, optimize performance, and improve application reliability.
• Mentor junior engineers and contribute to engineering excellence.

Required Skills

• 5–10 years of backend development experience.
• Strong expertise in Java, Spring Boot, Spring MVC, Hibernate/JPA.
• Hands‑on experience with Microservices Architecture.
• Experience building RESTful APIs.
• Strong knowledge of SQL/NoSQL databases.
• Experience with Payment Gateway Integration (Stripe, Adyen, Razorpay, Worldpay, PayU, Checkout.com, etc.).
• Hands‑on experience developing Checkout and Payment Processing workflows.
• Understanding of Payment Lifecycle, including Authorization, Capture, Refunds, Settlement, Webhooks, and Transaction Management.
• Experience with Docker, Kubernetes, and containerized applications.
• Good understanding of CI/CD pipelines using Jenkins or similar tools.
• Familiarity with Git, Agile methodologies, and engineering best practices.
• Strong problem‑solving and debugging skills.

Preferred Skills

• Experience working in FinTech, Payments, E-commerce, or Product‑based organizations.
• Exposure to Cloud Platforms (GCP/AWS/Azure).
• Experience with Kafka or event‑driven architecture.
• Knowledge of OAuth2, JWT, Keycloak, or similar authentication mechanisms.
• Experience with Monitoring & Observability tools (Grafana, Prometheus, ELK, Splunk).
• Performance tuning and scalability optimization experience.

Preferred Background

• Candidates from FinTech, Digital Payments, Banking Products, E-commerce, or Product Engineering companies.
• Experience working on high‑volume transaction systems handling secure payment processing and checkout experiences.