Senior Java Full-Stack Developer

Techstra Solutions • Pittsburgh, PA

1d

About The Position

We are seeking a Senior Java Full-Stack Developer to lead the design and development of scalable, high-concurrency microservices . This is a hands-on, full-stack role leveraging Java 17+ and Spring Boot on the backend and Angular on the frontend. The ideal candidate has strong experience operating in complex, distributed data environments , with deep expertise in Oracle and MongoDB , ensuring data integrity, performance, and consistency across systems.

Requirements

• Backend Java 17+
• Spring Boot 3.x
• Microservices architecture
• RESTful API design
• Databases Oracle Database (SQL, PL/SQL, tuning, indexing)
• MongoDB (NoSQL modeling, aggregation framework)
• Frontend Angular (v14+)
• TypeScript, RxJS
• State management (NgRx or equivalent)
• Strong architectural and problem-solving mindset
• Comfortable working in high-concurrency, distributed environments
• Effective mentor and collaborator
• Ownership-driven with attention to performance, security, and quality

Nice To Haves

• Event streaming experience with Apache Kafka (Producers, Consumers, Kafka Streams)
• Experience with message brokers such as IBM MQ or RabbitMQ
• Exposure to large-scale, high-throughput transactional systems

Responsibilities

• Architecture & Design Lead the architectural design of new microservices, ensuring solutions are loosely coupled, resilient, and highly available
• Apply modern microservices patterns , including service discovery, API gateways, and circuit breakers
• Influence platform standards, design patterns, and engineering best practices
• Full-Stack Delivery Develop end-to-end features from Angular UI through backend services to persistence layers
• Build and consume secure RESTful APIs with standardized validation and error handling
• Collaborate with product, UX, and backend teams to deliver high-quality solutions
• Backend Engineering (Java & Spring) Build high-performance services using Java 17+ , leveraging modern language features such as: Records Sealed Classes Pattern Matching Stream API
• Develop services using Spring Boot 3.x and the Spring ecosystem: Spring Web Spring Data JPA / MongoDB Spring Security Spring Cloud
• Design and deploy distributed microservices using resiliency patterns (Resilience4j)
• Database & Data Management Design and optimize Oracle database interactions, including: Advanced SQL and PL/SQL Performance tuning and indexing strategies Complex relational mappings
• Build and optimize MongoDB data models, aggregations, and document versioning patterns
• Implement data consistency strategies across polyglot persistence environments (e.g. Saga, Transactional Outbox)
• Frontend Engineering Build responsive, component-based UIs using Angular (v14+) , TypeScript , RxJS , and Angular Signals
• Implement state management using NgRx or lightweight state services
• Ensure seamless integration between frontend and backend services
• Performance, Quality & Security Identify and remediate performance bottlenecks in Java code and database queries
• Conduct rigorous code reviews and mentor junior and mid-level engineers
• Implement robust security protocols , including: OAuth2 OpenID Connect (OIDC) JWT-based authentication and authorization

What This Job Offers

• Job Type: Full-time
• Career Level: Mid Level
• Education Level: No Education Listed