Full Stack Developer

WarCollar Industries, LLC; McLean (VA); On-site; USD 120,000 - 180,000; Full time

Benefits offered by this job

Medical insurance premium coverage

PTO based on billable hours

Federal holidays plus your birthday

Matching 401k

Education reimbursement plus bonuses

Job summary

WarCollar Industries, LLC is seeking an experienced Search Software Engineer to support mission-critical national security programs. This role is ideal for engineers with deep expertise in Java development, enterprise search technologies, and big data platforms who thrive in high-impact, production environments.

Design, develop, and optimize Java-based backend services and high-performance search infrastructure using Solr/Elasticsearch.

Qualifications

• Bachelor's degree in Computer Science or a related technical field (or equivalent experience).
• 3+ years of experience with Solr/Elasticsearch and schema design.
• 5+ years of backend Java development.
• Experience delivering production software through code reviews, unit testing, integration testing, and deployment.
• TS/SCI Full Scope Polygraph required.

Responsibilities

• Design, develop, and maintain scalable Java-based backend applications supporting mission operations.
• Configure, optimize, and troubleshoot Solr and/or Elasticsearch environments for high-performance search capabilities.
• Perform schema updates and implement search enhancements.
• Develop and optimize complex Lucene queries to improve search accuracy and efficiency.
• Manage and tune Solr/Elasticsearch shards for scalability, resilience, and performance.
• Develop solutions within large-scale data environments using Hadoop, Spark, PySpark, and HBase.
• Participate in code reviews, unit testing, integration testing, and deployment of production-ready software.
• Collaborate with engineers, analysts, and mission stakeholders to deliver innovative technical solutions.

Skills

Solr/Elasticsearch

Lucene queries

Sharding architecture

Performance tuning

Java backend development

Big data environments

Hadoop

Spark

PySpark

HBase

Spring Boot

Education

Bachelor's degree in Computer Science or related field

Tools

Hadoop

Spark

PySpark

HBase

Spring Boot

Job description

Job Description

WarCollar Industries is seeking an experienced Search Software Engineer to support mission-critical national security programs. This role is ideal for engineers with deep expertise in Java development, enterprise search technologies, and big data platforms who thrive in high-impact, production environments.

WarCollar Industries is seeking an experienced Search Software Engineer to support mission-critical national security programs. This role is ideal for engineers with deep expertise in Java development, enterprise search technologies, and big data platforms who thrive in high-impact, production environments.

Key Responsibilities

• Design, develop, and maintain scalable Java-based backend applications supporting mission operations.


• Configure, optimize, and troubleshoot Solr and/or Elasticsearch environments for high-performance search capabilities.


• Perform schema updates and implement search enhancements.


• Develop and optimize complex Lucene queries to improve search accuracy and efficiency.


• Manage and tune Solr/Elasticsearch shards for scalability, resilience, and performance.


• Develop solutions within large-scale data environments using technologies such as Hadoop, Spark, PySpark, and HBase.


• Participate in code reviews, unit testing, integration testing, and deployment of production-ready software.


• Collaborate with engineers, analysts, and mission stakeholders to deliver innovative technical solutions.

Required Skills

• 3+ years of intermediate to expert-level experience with Solr or Elasticsearch, including:


• Schema design and updates


• Advanced Lucene query development


• Sharding architecture and optimization


• Performance tuning and query optimization


• 3+ years of experience working in big data environments utilizing technologies such as Hadoop, Spark, PySpark, and/or HBase (experience with at least two preferred).


• 5+ years of hands‑on backend Java development experience (JavaScript and Spring Boot experience alone does not satisfy this requirement).


• Demonstrated experience developing production software through code reviews, unit testing, integration testing, and deployment.


• Bachelor's degree in Computer Science or a related technical field (or equivalent experience, if applicable).


• TS/SCI Full Scope Polygraph requred

About WarCollar Industries

About us:

WarCollar Industries, LLC is a veteran-owned small business. We maintain a team of cybersecurity experts committed to protecting complicated data and distribution systems and providing decision makers with the most accurate assessment of residual risk possible. We work with our clients to solve the toughest challenges in the ever‑evolving digital landscape. Services include network defense, computer network attack, secure network design, penetration testing and vulnerability assessment. WarCollar enables its clients to find, fix, stop, and ultimately solve cybersecurity problems across their entire enterprise.

WarCollar offers generous benefits including: Medical insurance premium coverage; PTO based on billable hours; federal holidays plus your birthday; matching 401k, education reimbursement plus paid training days; performance bonuses; referral bonuses; government shutdown protection; monthly team building events plus two major social events annually.

WarCollar Industries, LLC is an equal opportunity employer. WarCollar does not discriminate in employment based upon race, color, religion, sex (including pregnancy and gender identity), national origin, political affiliation, sexual orientation, marital status, disability, genetic information, age, membership in an employee organization, retaliation, parental status, status as a protected military veteran, or other non‑merit factor.