Senior Developer

Location: India / Remote (Hybrid)

Experience: 311 Years

Employment Type: Full-Time

Company: CellPay

About CellPay

CellPay is a fast-growing fintech platform building scalable digital payment, prepaid, blockchain, international recharge, gift cards and neo-banking solutions. We work on high-volume transaction systems, carrier integrations, and secure financial workflows across B2B, D2C and B2C channels.

Over the last 3 years, the company is grown exponentially and you will be working with some of the best minds in a dynamic startup environment that encourages learning, impact, and growth.

If youre passionate about building real-world products, solving meaningful problems, and growing alongside a driven team, this is the place for you.

Key Responsibilities

• Design, develop, and maintain scalable backend services using Java (Spring / Spring Boot)
• Build and integrate RESTful APIs for payments, recharges, wallets, and third-party integrations
• Develop and enhance frontend applications using Angular / React / JavaScript
• Work with relational databases (MySQL / PostgreSQL) and optimize queries
• Ensure security, performance, and reliability of applications
• Collaborate with product, QA, and DevOps teams to deliver end-to-end features
• Participate in code reviews, debugging, and performance tuning
• Support production deployments and troubleshoot issues in live environments

Required Skills

• Strong experience in Java (Core Java, Spring, Spring Boot)
• Hands-on experience with REST APIs
• Frontend experience with Angular / React / JavaScript / HTML / CSS
• Solid understanding of SQL databases (MySQL preferred)
• Experience with Git and Linux environments
• Knowledge of authentication, authorization, and secure API design
• Good problem-solving and debugging skills

Good to Have

• Experience in fintech, payments, telecom, or high-transaction systems
• Exposure to AWS / Azure / Cloud deployments
• Experience working with third-party APIs (payments, wallets, telecom, banking)

What We Offer

• Opportunity to work on real-world fintech products at scale
• High ownership and impact on core systems
• Fast-growing, collaborative startup culture
• Competitive compensation
• Learning and growth opportunities in fintech & digital payments

How to Apply

Send your resume to ( ) or apply directly via LinkedIn.

Please include links to GitHub / portfolio (if available).