Backend Engineer (Java)

Mandatory Requirements Experience & Education 6+ years

of professional software development experience building backend systems in

Java . Bachelor’s degree

in

Computer Science

or a closely related field. Core Backend Development (Java Ecosystem) Strong proficiency in

Java SE/EE

with hands-on experience in: Spring Boot

(service development, configuration, dependency injection, actuator). Spring MVC

(controllers, interceptors, validation, exception handling). Hibernate

(ORM mappings, JPQL/HQL, transactions, performance tuning). Struts

(legacy maintenance and migration awareness). Proven ability to design and implement

RESTful microservices , including: API design, versioning, error handling, and request/response validation. Inter-service communication patterns and resilience (timeouts, retries). Secure service endpoints and token-based authentication/authorization. Architecture & Design Practical application of

Domain-Driven Design (DDD)

for complex domains: Entity/value-object modeling, aggregates, repositories, services. Bounded contexts and anti-corruption layers. Ability to conduct and contribute to

low-level and high-level design

artefacts. Experience with

hardware sizing/performance considerations

to meet concurrency and throughput requirements (e.g., supporting ~100k concurrent requests without server-side throttling). Data & Storage Production experience with

MS SQL

and

Oracle SQL : Schema design, indexing, stored procedures/functions, query optimization. Transaction management and data integrity in high-throughput systems. Hands-on implementation with

ElasticSearch : Index design, mappings, analyzers, search queries/aggregations. Performance considerations and scaling. Operational experience with

Logstash

pipelines for ingest/transform and reliable logging/observability. Security & Identity Implementation experience with

OpenID

authentication flows: Integrating third-party OpenID providers for user authentication. Token validation and secure session management. Strict adherence to secure coding practices: Input validation, output encoding, secrets management, least privilege. Build & Runtime Tooling Proficiency with

Maven

(multi-module builds, dependency management, packaging). Proficiency with

Git

and

SVN

for version control: Branching strategies, code reviews, and release management. Experience deploying and operating Java services on

Apache Tomcat : JVM tuning, thread pool configuration, connection pools, and diagnostics. Observability, Reliability & Performance Ability to implement effective

logging, monitoring, and tracing : Structured logs via Logstash, correlation IDs, and actionable dashboards. Demonstrated

performance tuning : Profiling, memory/CPU benchmarking, connection pool tuning, caching strategies. Incident handling and

root-cause analysis

within production environments: Creating runbooks, participating in on-call, and delivering corrective actions. Web Fundamentals (Integration Support) Working knowledge of

HTML, CSS, Bootstrap, jQuery , and

JavaScript

sufficient to: Collaborate with frontend teams and validate backend–UI integration. Support and troubleshoot UI-driven backend services. Product Development & Collaboration End-to-end feature ownership from

requirements

to

deployment . Experience performing

code reviews , maintaining

code quality , and mentoring peers. Cross-functional collaboration with

Product

and

Support

teams to align deliverables, triage issues, and ship on schedule. Quality & Delivery Commitment to writing

maintainable, testable code : Unit/integration tests, mocking/stubbing, test data management. Ability to define and meet

SLAs/SLOs

for backend services and APIs. Strong documentation habits for designs, APIs, and operational procedures.