Senior Software Engineer - Java Full Stack Development

About Kadel Labs :

Kadel Labs is a leading IT services company delivering top-quality technology solutions since 2017, focused on enhancing business operations and productivity through tailored, scalable, and future-ready solutions. With deep domain expertise and a commitment to innovation, we help businesses stay ahead of technological trends.

As a CMMI Level 3 and ISO 27001:2022 certified company, we ensure best-in-class process maturity and information security, enabling organizations to achieve their digital transformation goals with confidence and efficiency.

Job Title : Senior Software Engineer - Java Full Stack

Location : Bangalore

Experience : 3+ Years

Job Description :

We are looking for a Full Stack Developer with 3 - 5 years of hands-on experience to join our core engineering team. You will work across the backend (Java / Spring Boot) and frontend (React) layers of a large-scale, production platform. You will contribute to new feature development, client onboarding, PostgreSQL migration, and platform hardening initiatives.

This is a high-ownership role you will be responsible for features end-to-end, from API design and database schema changes (via Liquibase) through to UI integration and deployment.

Key Responsibilities :

• Design and develop REST APIs using Java 17 and Spring Boot 3.x for core business domains: payments, settlement, allocation, legal, and digital communications.
• Build and maintain React 18 UI components with Redux Toolkit for state management and Material-UI v5 for design.
• Write and maintain Liquibase changesets for schema evolution across Oracle and PostgreSQL databases.
• Ensure dual-engine compatibility (Oracle + PostgreSQL) for all backend SQL and Hibernate mappings.
• Integrate with internal services via RabbitMQ messaging and REST-based Feign clients.
• Work with AWS services: S3 (document storage), Lambda (rule engine triggers), SQS/SNS (async notifications), EKS (deployment).
• Implement and consume OAuth2/OIDC flows via Keycloak integration.
• Participate in code reviews, write unit and integration tests, and maintain code quality standards.
• Collaborate with mobile, infra, and product teams in an agile environment.

Requirements :

• 3 - 5 years of professional software development experience.
• At least 2 years in Java + Spring Boot backend development.
• At least 1 year of production React frontend work.

Backend :

• Java 17 strong proficiency; streams, concurrency, generics.
• Spring Boot 3.x REST controllers, Spring Data JPA, Spring Security.
• Hibernate 6.x : entity mappings, JPQL, native queries.
• Liquibase : versioned schema migrations, multi-DB changesets.
• Oracle SQL + PostgreSQL comfortable writing and optimising queries on both.
• REST API design pagination, error handling, idempotency.

Frontend :

• React 18 : functional components, hooks, context.
• Redux Toolkit : slices, thunks, RTK Query.
• Material-UI v5 : theming, custom components.
• REST API integration Axios/fetch, error boundaries, loading states.
• Basic understanding of build tooling (Webpack / Vite / npm).

General :

• Git branching, PR-based workflow, rebasing.
• Docker building and running containers locally.
• Understanding of microservice architecture.
• Familiarity with CI/CD pipelines.

Preferred / Nice-to-have :

• Experience with AWS (S3, SQS, Lambda, EKS / Kubernetes).
• Keycloak or any OAuth2/OIDC provider integration.
• RabbitMQ or any message broker (Kafka, ActiveMQ).
• Flowable BPMN or any workflow engine.
• Redis (caching, session management).
• API Gateway patterns.
• FinTech or NBFC domain knowledge (loans, collections, settlements).

Benefits :

Why Join Kadel Labs :

• Opportunity to work with a fast-growing, innovative company.
• A dynamic work environment where creativity and new ideas are encouraged.
• Competitive salary and benefits package.
• Professional development opportunities in a people-first culture.