Backend Developer Intern

Antique Network Solution Pvt. Ltd | Bengaluru (JP Nagar Phase 1) | Full-time, In-Office

Check us out: 1) https://payfin.tech/ 2)https://chitchaat.biz/

Antique Network Solution Pvt.Ltd has two innovative products; 2 industries under one roof!

Payfin-A payment platform helping businesses accept and send money securely and instantly PAN India. Our services include UPI payment gateways, QR code, Checkout pages, deep linking APIs, bulk UPI APIs, and Payout Solutions tailored to the dynamic needs of modern businesses.

Chitchat- A super-cool multichannel messaging platform that connects brands with customers across SMS, WhatsApp, Email, Voice, RCS, and more. With automation, analytics, and seamless API integrations, we’re redefining how brands communicate at scale.

You as a Backend Developer with strong fundamentals in Java, Spring Boot, and Data Structures/Algorithms. You’ll help build scalable APIs, messaging workflows, and backend services that power real-time customer engagement across multiple channels.

You will be Responsible for:

• Design, build, and maintain RESTful APIs and microservices using Java + Spring Boot.
• Implement and optimize messaging workflows for SMS, WhatsApp, email, and other channels.
• Apply data structures and algorithms to ensure efficient, low-latency systems.
• Work with databases (SQL/NoSQL) to design schemas and write optimized queries.
• Integrate with third-party messaging APIs and ensure high delivery reliability.
• Collaborate with frontend, product, and DevOps teams to build end-to-end features.
• Write clean, testable, and reusable code following best practices.
• Debug, troubleshoot, and enhance system performance at scale.

Must Have:

• Proficiency in Java, Spring Boot, REST APIs.
• Strong foundation in data structures, algorithms, and problem-solving.
• Experience with databases (MySQL, PostgreSQL, MongoDB, or similar).
• Understanding of messaging queues, caching, and distributed systems (Kafka, RabbitMQ, Redis)
• Familiarity with Git, CI/CD pipelines, Docker/Kubernetes is a plus.
• Knowledge of scalable architectures for SaaS/communication platforms preferred.

Qualifications:

• Bachelor’s degree in Computer Science, Engineering, or related field.
• Prior experience in SaaS, messaging, or fintech products is an advantage.

Why Join Us?

• Build the core backend of a high-growth, multi-channel messaging platform.
• Work on real-world communication challenges (scale, delivery, reliability).
• Collaborate with a passionate team in a fast-paced startup environment.
• Growth path into Senior Backend Engineer / Tech Lead roles.

Job Types: Full-time, Permanent

Pay: ₹350,000.00 - ₹550,000.00 per year

Benefits:

• Health insurance
• Paid sick time
• Provident Fund

Ability to commute/relocate:

• Bengaluru, Karnataka: Reliably commute or planning to relocate before starting work (Required)

Experience:

• Java: 1 year (Required)
• Spring Boot: 1 year (Required)

Location:

• Bengaluru, Karnataka (Required)

Work Location: In person