Senior Java Full-Stack Developer

Pittsburgh, PA
Full Time
Experienced

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.

Share

Apply for this position

Required*
We've received your resume. Click here to update it.
Attach resume or Paste resume
Attach resume as .pdf, .doc, .docx, .odt, .txt, or .rtf (limit 5MB) or Paste resume

Paste your resume here or Attach resume file

150
To comply with government Equal Employment Opportunity and/or Affirmative Action reporting regulations, we are requesting (but NOT requiring) that you enter this personal data. This information will not be used in connection with any employment decisions, and will be used solely as permitted by state and federal law. Your voluntary cooperation would be appreciated. Learn more.
Invitation for Job Applicants to Self-Identify as a U.S. Veteran
  • A “disabled veteran” is one of the following:
    • a veteran of the U.S. military, ground, naval or air service who is entitled to compensation (or who but for the receipt of military retired pay would be entitled to compensation) under laws administered by the Secretary of Veterans Affairs; or
    • a person who was discharged or released from active duty because of a service-connected disability.
  • A “recently separated veteran” means any veteran during the three-year period beginning on the date of such veteran's discharge or release from active duty in the U.S. military, ground, naval, or air service.
  • An “active duty wartime or campaign badge veteran” means a veteran who served on active duty in the U.S. military, ground, naval or air service during a war, or in a campaign or expedition for which a campaign badge has been authorized under the laws administered by the Department of Defense.
  • An “Armed forces service medal veteran” means a veteran who, while serving on active duty in the U.S. military, ground, naval or air service, participated in a United States military operation for which an Armed Forces service medal was awarded pursuant to Executive Order 12985.
Veteran status


Voluntary Self-Identification of Disability
Voluntary Self-Identification of Disability Form CC-305
OMB Control Number 1250-0005
Expires 04/30/2026
Why are you being asked to complete this form?

We are a federal contractor or subcontractor. The law requires us to provide equal employment opportunity to qualified people with disabilities. We have a goal of having at least 7% of our workers as people with disabilities. The law says we must measure our progress towards this goal. To do this, we must ask applicants and employees if they have a disability or have ever had one. People can become disabled, so we need to ask this question at least every five years.

Completing this form is voluntary, and we hope that you will choose to do so. Your answer is confidential. No one who makes hiring decisions will see it. Your decision to complete the form and your answer will not harm you in any way. If you want to learn more about the law or this form, visit the U.S. Department of Labor’s Office of Federal Contract Compliance Programs (OFCCP) website at www.dol.gov/ofccp.

How do you know if you have a disability?

A disability is a condition that substantially limits one or more of your “major life activities.” If you have or have ever had such a condition, you are a person with a disability. Disabilities include, but are not limited to:

  • Alcohol or other substance use disorder (not currently using drugs illegally)
  • Autoimmune disorder, for example, lupus, fibromyalgia, rheumatoid arthritis, HIV/AIDS
  • Blind or low vision
  • Cancer (past or present)
  • Cardiovascular or heart disease
  • Celiac disease
  • Cerebral palsy
  • Deaf or serious difficulty hearing
  • Diabetes
  • Disfigurement, for example, disfigurement caused by burns, wounds, accidents, or congenital disorders
  • Epilepsy or other seizure disorder
  • Gastrointestinal disorders, for example, Crohn's Disease, irritable bowel syndrome
  • Intellectual or developmental disability
  • Mental health conditions, for example, depression, bipolar disorder, anxiety disorder, schizophrenia, PTSD
  • Missing limbs or partially missing limbs
  • Mobility impairment, benefiting from the use of a wheelchair, scooter, walker, leg brace(s) and/or other supports
  • Nervous system condition, for example, migraine headaches, Parkinson’s disease, multiple sclerosis (MS)
  • Neurodivergence, for example, attention-deficit/hyperactivity disorder (ADHD), autism spectrum disorder, dyslexia, dyspraxia, other learning disabilities
  • Partial or complete paralysis (any cause)
  • Pulmonary or respiratory conditions, for example, tuberculosis, asthma, emphysema
  • Short stature (dwarfism)
  • Traumatic brain injury
Please check one of the boxes below:

PUBLIC BURDEN STATEMENT: According to the Paperwork Reduction Act of 1995 no persons are required to respond to a collection of information unless such collection displays a valid OMB control number. This survey should take about 5 minutes to complete.

You must enter your name and date
Human Check*