Senior Java Full-Stack Developer

Job Title

Senior Java Full-Stack Developer

Employment Type: Full-time

Locations: Pittsburgh, PA

Role Overview

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.

Key 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

Required Technical Skills

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)

Nice-to-Have Qualifications

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

Soft Skills & Traits

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

About Techstra Solutions

Techstra Solutions helps leading organizations unlock the value of Digital and Talent Transformation. We combine business strategy, technology, and talent to guide clients through complex transformation journeys—from strategy through execution.

We deliver our expertise through consulting, innovative staffing solutions, and software development, always focused on measurable outcomes and long-term impact.

Equal Employment Opportunity Statement

Techstra Solutions is an equal opportunity employer. The Company makes its decisions on merit, and its policy of equal opportunity prohibits discrimination in all phases of the employment process, including, but not limited to, recruitment, hiring, promotion, selection, transfer, demotion, layoff, termination, compensation, benefits, and other terms and conditions of employment. The policy of equal opportunity applies without regard to race, color, creed, religion, gender,, sexual orientation, gender identification, pregnancy, marital status, national origin, ancestry, age, disability that can reasonably be accommodated without undue hardship, military status, veteran status, genetic predisposition or carrier status, alienage or citizenship, domestic partnership status, arrest or conviction record, status as a victim of domestic violence, or any other protected categories under federal, state, or local law. The Company also prohibits discrimination or harassment based upon the perception that a person has, or is associated with a person who has, any of these characteristics.