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Zolo Inc.Verified
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3-5 years of professional experience developing backend applications in Java, including full ownership of features within a production service.
Demonstrated proficiency with Spring Boot, including dependency injection, REST controller design, service layer architecture, transaction management, configuration, and exception handling, along with a working understanding of the framework`s underlying behavior.
Strong command of SQL and relational database concepts, including joins, indexing, transactions, and isolation levels, with the ability to interpret query execution plans and diagnose performance issues.
Practical experience with ORM frameworks (JPA/Hibernate), including entity mapping, fetch strategies, lazy loading, and awareness of common pitfalls such as the N + 1 query problem.
Experience designing REST APIs consumed by external or internal clients, with attention to versioning, pagination, structured error handling, and backward compatibility.
A demonstrated commitment to automated testing practices, including proactive development of unit and integration tests.
Proficiency with Git and pull-request-based collaborative workflows, including the ability to provide meaningful code review.
Strong written communication skills and the ability to read and comprehend technical documentation in English.
Preferred Qualifications
Experience with Docker, message/event-driven architecture patterns, caching strategies, or scheduled job processing.
Prior exposure to POS, ERP, e-commerce, fintech, or other domains requiring financial reconciliation.
Familiarity with Testcontainers or comparable tools for integration testing against real databases.
Experience with schema migration tooling and strategies for evolving database structures without service downtime.
Working knowledge of a front-end framework (e.g., React or Next.js), sufficient to collaborate effectively with front-end developers on API contract issues.
Experience mentoring or onboarding other developers, whether in a formal or informal capacity.
Technical Environment
Modern Java with Spring Boot, built on a relational database with versioned schema migrations.
Token-based authentication, caching, scheduled job processing, and object storage.
REST APIs documented using the OpenAPI specification.
Comprehensive testing strategy comprising unit tests and container-based integration tests.
Docker-based environments for local development and deployment.
Company Overview: At Zolo Inc., we specialize in delivering innovative solutions tailored to the needs of modern businesses. From advanced software platforms and comprehensive business management tools to specialized applications, we offer a range of products designed to streamline operations and drive growth. With a focus on scalability, our solutions are built to ensure that our clients have the resources they need to thrive in a competitive environment.
Zolo Inc. is seeking an experienced Backend Developer to design, build, and take ownership of REST APIs for our POS and business-portal products. The successful candidate will work directly on core domain logic - including orders, menus, pricing, discounts, tax, and payments - where accuracy and attention to detail are essential. This is a hands-on engineering position offering genuine ownership of features, from the initial requirements stage through implementation, testing, and review.
Key Responsibilities
Design, build, and maintain ownership of REST APIs in Java / Spring Boot for POS and business-portal features, managing the full lifecycle from requirements definition through contract design, implementation, testing, and review.
Develop and maintain domain logic for orders, menus, pricing, discounts, tax, and payment processing, ensuring accuracy across all calculations and edge cases.
Own the data layer, including schema design, migrations that can be safely executed against live production data, entity mapping, and queries that remain performant as data volume grows.
Write comprehensive automated tests, including unit tests and integration tests against a live database, ensuring tests provide meaningful verification rather than superficial coverage.
Implement and extend the organization`s authorization model, including role-based and tenant/branch-level access scoping, across all endpoints.
Investigate and resolve production issues by reproducing the problem, implementing a fix, adding a regression test, and addressing the underlying cause rather than the isolated symptom.
Provide substantive, constructive code review feedback to peers.
Support front-end integration for minor feature changes, collaborating with front-end developers and leveraging Al tooling to maintain development velocity.
Contribute to the definition and documentation of backend engineering conventions and best practices.
Other benefits are as per company policy.
Work at office
Full time
Anywhere in Bangladesh
Applications for this job are handled on the company's own website.
Zolo Inc. is a Dhaka-based B2B saas product company building business intelligence tools for SMEs. We turn business data into clear, actionable insights helping business owners make smarter decisions, faster.
