Web Application / API Services Developer - Mid Level (FI2)

Back to Jobs
TRINITY ENTERPRISE SERVICES, LLC logo

Web Application / API Services Developer - Mid Level (FI2)

TRINITY ENTERPRISE SERVICES, LLC

Location

Chantilly, VA

Experience

Mid

Posted

Jul 18, 2026

Apply by

August 17, 2026

Applicants

0

Early applicantEasy applyFull-timeWork from Office

Job Description

Web Application / API Services Developer – Mid Level (FI2) Job Description: Looking for an opportunity to revitalize an application that is used by everyone in our customer space? That's right, we're in the enviable position of starting from the beginning -- meaning we have the privilege and opportunity to choose libraries, tools, architectures -- you name it. This position is for those developers hungry to make a difference and put their stamp on a vital application that will help our customer succeed for decades to come. Feel free to read the resume-speak below, but if you have a TS/SCI clearance with FSP and you think you have what it takes, apply fast because this project will fill up soon! This role is for an experienced, mid-level web application and/or API services developer. The applicant's resume should articulate the ability to develop and use complex concepts & processes, conduct root cause analysis, and develop technical solutions to problems while prioritizing multiple tasks. Candidates should have multiple years of experience as an individual contributor, and may have experience leading teams of junior-level developers. Well qualified candidates will have experience evaluating and recommending new technology and improving processes based upon cost, risk, and mission needs. The selected individual will be assigned to a scrum team within the development organization supporting numerous activities including: - Working at the tactical level, defining tasks and developing software programs - Designing, developing, documenting, testing, and debugging software that contains logical and mathematical solutions to critical mission issues - Applying the appropriate standards, processes, procedures, and tools throughout the development life cycle - Correcting program errors, compiling documentation of program development, and analyzing system capabilities to resolve questions of program intent, output requirements, input data acquisition, programming techniques, and controls - Leading and mentoring junior developers on the team and within Trinity - Reviewing code developed by other teammates, and providing professional and actionable feedback - Ensuring software standards are defined and met Basic Qualifications: - Meet minimum education and experience requirements: - Master’s Degree with 4 years experience - Bachelor’s degree with 6 years experience - Associates with 8 years of experience - HS Diploma with 10 years experience - Experience working with a Scrum Master or Project Coordinator - Java and Spring development experience - DBMS and ORM (e.g. Hibernate) experience - Flexibility in supporting dynamic user needs - Strong troubleshooting skills - Proven experience in COTS/FOSS integration and support - Experience with multiple operating system environments including LINUX and Windows - Ability to learn and implement new technologies - Ability to maintain TS/SCI clearance with FSP Preferred Qualifications: - Large scale software development experience: develop/modify/troubleshoot Java code - Agile development experience - UNIX/LINUX operating Systems, - Experience with HTML, Selenium, JavaScript, Webservices - Microservices leveraging REST, JSON, and/or XML - Deployment architectures including Continuous Integration Pipeline build concepts leveraging: Docker, Git / JIRA, Kubernetes, Jenkins, Conductor, Kafka/Zookeeper, Consul, CMDB - Big data technologies to include Data Ingest (JSON, Kafka, Microservices, Elastic Search), Analytics (HIVE, SPARK, R, PIG, OOZIE workflows), Elasticsearch, Hadoop (HIVE data, OOZIE, Spark, PIG, IMPALA, HUE), COTS Integration (Knowi, MongoDB, Oracle, MySQL RDS, Elastic, Logstash, Kibana, Zookeeper, Consul, HADOOP/HDFS), Docker and Chef) - CISSP Certification Benefits: - 5 Weeks Paid Time Off - 10% contribution into 401K - 10 paid holidays plus your birthday off! - Medical, Dental, Vision, STD, LTD, Term Life, AD&D. Company pays monthly premiums - Bonus program and yearly profit sharing! - IT Training opportunities and continued education for IT degree seekers! - Military Guard and Reserve benefits! ... and much more! To see all our current career opportunities, check out our [Trinity ES LLC career page](https://trinityesllc.applytojob.com/apply)! Clearance Requirements\ Requires an active Top Secret security clearance with FSP upon hire and must meet SCI eligibility. Must be willing and able to obtain a polygraph within the customer’s timeline after hire. Applicants selected will be subject to a U.S. Government security investigation and must meet eligibility requirements for access to classified information. Due to the nature of work performed within our facilities, U.S. citizenship is required.

Key Responsibilities

  • Define tasks and develop software programs at the tactical level
  • Design, develop, document, test, and debug software with logical and mathematical solutions
  • Apply standards, processes, and tools throughout the development life cycle
  • Correct program errors and analyze system capabilities to resolve issues
  • Lead and mentor junior developers on the team
  • Review code from teammates and provide actionable feedback
  • Ensure software standards are defined and met

Requirements

  • Master’s Degree with 4 years experience
  • Bachelor’s degree with 6 years experience
  • Associates with 8 years of experience
  • HS Diploma with 10 years experience

Skills Required

JavaSpringDBMSORMHibernateLINUXWindowsCOTS/FOSS integrationTroubleshootingFlexibilityLeadershipMentoringProblem solvingAgile developmentUNIXHTMLSeleniumJavaScriptWebservicesMicroservicesRESTJSONXMLDockerGitJIRAKubernetesJenkinsConductorKafkaZookeeperConsulCMDBHIVESPARKRPIGOOZIEElasticsearchHadoopHDFSMongoDBOracleMySQLLogstashKibanaChefElastic SearchData IngestAnalytics

Benefits

  • 5 Weeks Paid Time Off
  • 10% contribution into 401K
  • 10 paid holidays plus birthday off
  • Medical, Dental, Vision, STD, LTD, Term Life, AD&D insurance
  • Bonus program and yearly profit sharing
  • IT Training opportunities and continued education
  • Military Guard and Reserve benefits

App exclusive · Free

Smart Job AI Coach

Your personal interview coach on every job — readiness tips, profile improvements, and role-specific prep. Available only in the Pulse Job app.

Interview readiness

See how prepared you are and what to improve for each role.

Personalized tips

Actionable suggestions based on your profile and the job.

After you apply

Keep coaching momentum from job detail through application success.

Get Smart Job AI Coach in the appFree on iOS and Android