Lead Senior Software Engineer – Full Stack

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Ad Hoc LLC

WebsiteLinkedInAll Job Openings

501 - 1000 employees

Founded 2014

💼 Consulting

🏥 Healthcare

📦 Logistics

Consulting • Healthcare • Logistics

Ad Hoc LLC is a technology consulting firm that modernizes digital government services through human-centered design, platform and mobile development, and systems transformation. The company specializes in data interoperability, API infrastructure, DevOps and cybersecurity practices, and AI-driven/agentic automation to help federal, state, and local agencies scale services, reduce costs, and improve user experiences. Notable work includes large-scale Medicare enrollment processing, the VA Health and Benefits mobile app, and enabling access to billions of health claims via modern APIs.

📋 Description

• Serve as Key Personnel and technical lead on an engineering team • Lead the design and development of the first production content-exchange bridge connecting the Library of Congress Enterprise Copyright System and Digital Library Services applications • Lead a 3–5 person engineering team • Author Architecture Decision Records, set coding standards, conduct peer code reviews, and establish quality gates • Design, build, and own integration layers and versioned API client contracts • Decouple consumer pipelines from upstream schema evolution • Write production code across Python/Django and Java codebases • Build and optimize event-driven processing pipelines using AWS services • Manage infrastructure with Terraform • Maintain and modernize Jenkins and SonarQube CI/CD pipelines • Implement and manage Content-Addressable Storage architectures with fixity verification • Develop and maintain Solr and/or Elasticsearch search indexing • Partner with government Product Owners and stakeholders in a federal Agile/SCRUM environment • Lead story-point estimation, sprint planning, backlog grooming, and retrospectives • Mentor engineers and steer technical strategy

🎯 Requirements

• Minimum 5 years of hands-on experience in information system design, complex software development, and application programming on large-scale database management systems • Production application development experience using Python with Django • Application development experience in Java within a mixed Python/Java architecture • Hands-on experience with AWS, including ECS Fargate, Lambda, S3, RDS, SNS/SQS • Terraform Infrastructure as Code experience • Hands-on experience building and maintaining automated CI/CD pipelines using Jenkins and security scanning tools such as SonarQube • Experience with Content-Addressable Storage architectures, hash-based addressing, immutable object stores, and fixity verification • Production experience with Solr and/or Elasticsearch for content discovery and metadata querying • Production experience with HTML5, CSS3, and JavaScript • Experience designing microservices architectures with versioned API client contracts, backward compatibility, and graceful degradation • Practiced Agile/SCRUM in a federal delivery environment, including estimation, sprint planning, and backlog grooming • Ability to support core business hours: 8:30 AM–5:30 PM ET, Monday–Friday • Ability to complete Library of Congress IT security training and NDA prior to system access • Preferred: prior delivery on Library of Congress contracts under Library SDLC standards • Preferred: experience with digital preservation concepts and standards, including OAIS, PREMIS, and METS • Preferred: experience with malware scanning, fixity validation, or format characterization pipelines • Preferred: TypeScript, ReactJS, or Angular experience • Preferred: experience modernizing or migrating CI/CD pipeline tooling

🏖️ Benefits

• Company-subsidized health, dental, and vision insurance • Flexible PTO • 401(k) with employer match • Paid parental leave after one year of service • Employee Assistance Program • Remote work culture and flexibility • Opportunity to work on impactful public-sector digital services • Equal Opportunity Employer • Veterans and transitioning service members are encouraged to apply