Back to jobs

Lead Java Full Stack Developer

Washington DC

ASSYST is  seeking a highly experienced and motivated Lead Java Full Stack Developer to join our client's dynamic engineering team in Washington D.C. 

The candidate shall lead a team of talented developers in designing, building, and deploying enterprise-scale applications using a modern Java and Angular technology stack. The candidate will take complete ownership of the end-to-end project lifecycle, from architectural design to post-release support, while mentoring the  team and driving technical excellence. The ideal candidate is a hands-on leader with a passion for building robust, scalable software and fostering a collaborative Agile environment.

Key Responsibilities

  • Team Leadership & Mentorship: Lead, guide, and mentor a team of 5-10+ software engineers, fostering a culture of technical excellence, collaboration, and continuous improvement.
  • Technical Ownership: Drive the architectural design and hands-on development of complex, scalable full-stack applications using the Spring Boot and Angular frameworks.
  • End-to-End Delivery: Own the entire software development lifecycle, including requirements analysis, solution design, development, testing, CI/CD, deployment, and monitoring.
  • Agile Practice Leadership: Champion and actively participate in all Agile/Scrum ceremonies, facilitate the breakdown of epics into user stories, and collaborate closely with Product Owners and Scrum Masters to ensure sprint goals are met.
  • Code Quality & Best Practices: Enforce software development best practices through rigorous code reviews, advocating for TDD/BDD, and maintaining high standards of code quality using tools like SonarQube.
  • Stakeholder Collaboration: Serve as a key technical point of contact, effectively communicating with cross-functional teams, stakeholders, and management to ensure alignment and manage project delivery under tight deadlines.

Requirements:
10+ years of professional software development experience.
Proven track record as a Technical Lead or Team Lead, successfully delivering complex, enterprise-grade applications.

Backend Development (Java): 

  • Deep expertise in Java (8/11/17) and the Spring Boot ecosystem (Spring MVC, Spring Data JPA, Spring Security).
  • Strong, hands-on experience designing and building RESTful APIs and microservices architecture.
  • Proficiency with messaging systems like Kafka or RabbitMQ.
  • In-depth knowledge of scalability, performance tuning, and distributed systems.

Frontend Development (Angular):

  • Proficiency in modern Angular (12+), TypeScript, RxJS, and state management with NgRx.
  • Demonstrated experience building modular, scalable, and responsive Single-Page Applications (SPAs).
  • Strong understanding of UI/UX best practices and experience with modern component libraries.

Database & Persistence:

  • Advanced skills in RDBMS (PostgreSQL, Oracle, MySQL), including complex SQL and database optimization.
  • Experience with ORM frameworks like Hibernate and JPA.
  • Familiarity with NoSQL databases (MongoDB, Redis) for high-performance scenarios.

DevOps & Cloud Infrastructure:

  • Hands-on experience implementing and managing CI/CD pipelines using Jenkins, GitLab, GitHub Actions, or Azure DevOps.
  • Expertise in containerization with Docker and orchestration with Kubernetes.
  • Practical experience with a major cloud platform (AWS, Azure, or GCP), including deployment, scaling, and monitoring.
  • Familiarity with logging and monitoring stacks like ELK, Prometheus, Grafana, or Datadog.

Testing & Quality Assurance:

  • Strong advocate for Test-Driven Development (TDD) and BDD methodologies.
  • Proficient with unit/integration testing frameworks (JUnit, Mockito, Testcontainers) and frontend testing tools (Jasmine/Karma, Cypress).


ASSYST is an Equal Opportunity Employer. Qualified applicants will receive consideration for employment without regard to race, color, religion, sex, age, disability, military status, national origin or any other characteristic protected under federal, state, or applicable local law

Apply for this job

*

indicates a required field

Phone
Resume/CV*

Accepted file types: pdf, doc, docx, txt, rtf


Education

Select...
Select...

Select...
Select...
Select...

Voluntary Self-Identification

For government reporting purposes, we ask candidates to respond to the below self-identification survey. Completion of the form is entirely voluntary. Whatever your decision, it will not be considered in the hiring process or thereafter. Any information that you do provide will be recorded and maintained in a confidential file.

As set forth in ASSYST, Inc.’s Equal Employment Opportunity policy, we do not discriminate on the basis of any protected group status under any applicable law.

Select...
Select...
Race & Ethnicity Definitions

If you believe you belong to any of the categories of protected veterans listed below, please indicate by making the appropriate selection. As a government contractor subject to the Vietnam Era Veterans Readjustment Assistance Act (VEVRAA), we request this information in order to measure the effectiveness of the outreach and positive recruitment efforts we undertake pursuant to VEVRAA. Classification of protected categories is as follows:

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.

Select...

Voluntary Self-Identification of Disability

Form CC-305
Page 1 of 1
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
Select...

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.