Java full stack developer (3–5 YEARS)

Summary

Builds and maintains a full-stack Java/Spring Boot backend and React frontend for a financial platform, handling payments, settlements, and database migrations across Oracle and PostgreSQL.

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

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.

Visit us:

https://kadellabs.com/

https://in.linkedin.com/company/kadel-labs

https://www.glassdoor.co.in/Overview/Working-at-Kadel-Labs-EI_IE4991279.11,21.html

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