Live opening · Posted 1 day ago

Software Engineer

Lumber · Bengaluru, Karnataka, India (On-site)
Linkedin No
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At a glance

The key details from the original listing.

Posted 1 day ago
CompanyLumber
LocationBengaluru, Karnataka, India (On-site)
Work modeNo
SkillsTypeScript, React, Java, Spring Boot, Docker, Kubernetes, PostgreSQL
SourceLinkedin
ListedPosted 1 day ago

About the role

Description supplied by the original job listing.

About the role
We're hiring a Software Engineer with 1–3 years of experience to build and maintain our Java / Spring Boot backend platform. You'll design APIs, build integrations and work on high-impact business workflows, and you'll also contribute to our React-based internal admin portal. Working React knowledge is a strong plus.
Role: Software Engineer
Experience: 1–3 years
Primary focus: ~80% backend (Java / Spring Boot), ~20% frontend (React)
What you'll do
Backend
Design, build and maintain REST APIs in Java 11+ and Spring Boot within a multi-module Maven codebase.
Implement core business logic with clean, well-tested code.
Build and maintain integrations with third-party APIs (REST, OAuth, webhooks).
Model data in PostgreSQL with JPA/Hibernate and ship schema changes through versioned migrations.
Build async and event-driven flows using Kafka, scheduled jobs and Redis (caching, distributed locks).
Write unit and integration tests (JUnit, Mockito) and keep code passing static analysis checks.
Debug production issues using logs and metrics, and fix root causes.
Take part in code reviews and follow team engineering standards.
Frontend (React)
Build and update admin portal screens, forms and data grids that call the APIs you build.
Wire frontend changes end to end: API contract, UI, validation and error states.
Team
Work with product, QA and support to turn requirements into shippable changes.
Own features through dev, QA and staging to production release.
Must have
1–3 years of professional backend development in Java (Java 11+).
Hands-on Spring Boot: REST controllers, dependency injection, Spring Data JPA, exception handling, configuration profiles.
Solid SQL and relational modeling, preferably PostgreSQL: joins, indexes, transactions, query tuning basics.
Working knowledge of Hibernate/JPA, including lazy loading and the N+1 problem.
Experience writing unit tests with JUnit and Mockito.
Comfort with Maven, Git and a PR-based workflow.
Understanding of REST API design, HTTP status codes, auth basics (JWT/OAuth) and JSON.
Core CS fundamentals: data structures, OOP, collections, multithreading basics.
Clear written communication and ownership of tasks end to end.
Good to have
Frontend
React 18 with TypeScript: functional components, hooks, props and state.
Material UI (MUI), including Data Grid and date pickers.
Calling REST APIs with Axios and handling loading and error states.
React Router and a state library (Easy Peasy, Redux or similar).
Testing with Jest and React Testing Library.
Backend and platform
Kafka producers/consumers, Redis caching or distributed locks.
Liquibase or Flyway schema migrations.
Quartz or other job schedulers; actor-based concurrency (Akka).
Docker, Kubernetes, Jenkins CI/CD.
Experience using AI coding tools (Claude Code, Cursor) in daily work.
Qualifications
B.E./B.Tech/MCA in Computer Science or a related field, or equivalent practical experience.
1–3 years building production backend systems.

Work arrangement
No

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