Hire Pre-vetted Java Developers

What is a Java Developer?

A Java Developer is a software engineer specializing in building robust, scalable applications using Java—one of the world's most mature, widely-used programming languages. Java powers everything from Fortune 500 enterprise systems to high-traffic web applications to Android mobile apps. Java Developers do more than write code—they design enterprise architectures, build high-performance systems, integrate complex business logic, and mentor teams on software design principles. Whether you need someone to build microservices, scale a monolith, architect payment systems, or modernize legacy Java applications, a skilled Java Developer brings deep systems thinking and proven architectural expertise.

What makes Java Developers valuable is their ability to build systems that scale reliably under pressure. Java's mature ecosystem, strong typing, and extensive libraries enable developers to tackle complex problems with confidence. This is why mission-critical systems—from banking to healthcare to e-commerce—run on Java. When you hire through Torc, you're getting someone who architects systems designed to run for decades while handling millions of users.

Technology Stack

Core Java

• Java 11, Java 17, Java 21 (LTS versions)

• Object-oriented & functional programming

• Design patterns & SOLID principles

• Collections, streams, and concurrency

Web & Application Frameworks

• Spring Boot & Spring Framework

• Spring Cloud for microservices

• Quarkus for container-native applications

• Jakarta EE (formerly Java EE)

Data Access & Databases

• JPA & Hibernate ORM

• JDBC for database connectivity

• SQL optimization & query tuning

• PostgreSQL, MySQL, Oracle, SQL Server

Build & Dependency Management

• Maven, Gradle

• Dependency management best practices

• CI/CD integration

• Artifact repositories (Nexus, Artifactory)

Testing & Quality

• JUnit, TestNG

• Mockito, WireMock for mocking

• Integration & performance testing

• Code quality tools (SonarQube, CheckStyle)

Key Qualities to Look For on a Java Developer

Enterprise Architecture Thinking — They design systems that evolve over years. They understand distributed systems, data consistency, and reliability. They make architectural decisions with long-term maintainability in mind.

Performance & Scalability Focus — They optimize code with production constraints in mind. They understand JVM tuning, garbage collection, threading, and can diagnose performance bottlenecks. They design systems that scale horizontally.

Design Pattern Mastery — They know when to apply design patterns and when they add unnecessary complexity. They can explain architectural choices clearly and defend decisions against alternatives.

Testing Discipline — They write comprehensive tests—unit tests, integration tests, and performance tests. They practice test-driven development and understand the trade-offs between different testing approaches.

Team Player — Java systems are typically large and complex, requiring coordination among many developers. Exceptional Java developers collaborate well, review code constructively, and document decisions clearly.

Continuous Learner — The Java ecosystem evolves constantly. The best developers stay current with new versions, frameworks, and best practices while knowing which innovations matter versus which are hype.

Project Types Your Java Developers Handle

Microservices Architecture — Building systems composed of independent, loosely-coupled services. Real scenarios: Extracting services from monoliths, designing service-oriented architectures, implementing inter-service communication patterns.

Enterprise Application Development — Building large, complex business applications. Real scenarios: ERP systems, financial platforms, healthcare management systems, supply chain management.

High-Performance Systems — Building systems that handle massive scale and throughput. Real scenarios: Payment processing systems, real-time analytics engines, high-frequency trading platforms.

API Development — Designing and building robust, well-documented APIs. Real scenarios: REST APIs for web/mobile clients, GraphQL endpoints, event-driven APIs.

Legacy Java Modernization — Upgrading and modernizing older Java applications. Real scenarios: Java version upgrades, migrating to Spring Boot, containerizing Java applications.

Cloud-Native Applications — Building applications designed for cloud deployment. Real scenarios: Kubernetes-native applications, serverless Java functions, cloud-optimized architectures.

Data Processing & Analytics — Building systems to process and analyze large datasets. Real scenarios: Real-time analytics pipelines, batch processing systems, data integration solutions.

Interview questions

Question 1: "Design a microservices architecture for an e-commerce platform. What would be your service boundaries, communication patterns, and technology choices?"

Why this matters: Tests enterprise architecture thinking and distributed systems understanding. Reveals whether they understand service decomposition, eventual consistency, API design, and technology choices. Shows ability to design systems that scale across teams.

Question 2: "Tell me about a Java application you optimized for performance or scalability. What was the bottleneck, how did you identify it, and what was your solution?"

Why this matters: Tests practical performance optimization experience and JVM understanding. Reveals whether they understand JVM behavior, use profiling tools, and optimize at the right level (code, database, infrastructure). Shows production experience with Java systems.

Question 3: "Describe your experience with Spring Framework. What Spring features do you rely on, and have you ever encountered situations where Spring abstractions became a problem?"

Why this matters: Tests depth of Spring knowledge and judgment about when to embrace or fight frameworks. Reveals whether they truly understand what Spring does or just follow conventions. Shows maturity in recognizing framework benefits and limitations.