[Remote] Senior Software Engineer FS (Library of Congress)

Note: The job is a remote job and is open to candidates in USA. Ad Hoc LLC is a technology company that empowers organizations to deliver scalable, impactful digital services. They are seeking a Senior Software Engineer - Full Stack to design, develop, and deploy features while mentoring junior engineers and ensuring high engineering quality standards are met.ResponsibilitiesDesign, develop, and deploy full stack features across both server-side components and user-facing interfaces, working in Python, Java, Angular, and AWS services within a cloud-native microservice architectureOwn end-to-end delivery of complex features from story refinement through production deployment, including API design, data integration, frontend implementation, and automated testingEnforce engineering quality standards including mandatory peer code review, SonarQube quality gate compliance, and resolving security findings in-sprint rather than deferring themImplement UI designs from Figma specifications using federal Design System components, ensuring WCAG 2.1 AA accessibility standards are met across all frontend workLead technical design discussions, author Architecture Decision Records, and present system diagrams and design documents to engineers, product owners, and federal stakeholdersDiagnose and resolve production issues across systems you own, using incidents as opportunities to improve system resilience and inform team knowledgeActively mentor junior and mid-level engineers, providing code review feedback and guidance that builds technical capability across the teamContribute to CI/CD pipeline hygiene, infrastructure-as-code standards via Terraform, and GitLab pipeline optimizationParticipate in technical interviews and candidate evaluationsMay lead small, less critical, or temporary team structures and projectsSkills7+ years of relevant engineering experience and a Bachelor's degree, or equivalent additional experience in lieu of a degreeMust meet federal suitability requirements and pass a background investigation as a condition of employmentExpert-level proficiency in at least one of: backend engineering (Python, Java), frontend engineering (Angular, JavaScript), or cloud infrastructure (AWS, Terraform)Strong working knowledge across the full stack including PostgreSQL, Elasticsearch, containerized microservices, and AWS services (ECS, RDS, S3, Lambda, CloudWatch)Proficiency in Angular, HTML/CSS, and JavaScript for frontend development, including implementation of Design System components from Figma specificationsExperience building and consuming versioned RESTful APIs with published OpenAPI specificationsHands-on experience with CI/CD pipelines in GitLab and infrastructure-as-code using TerraformWorking knowledge of WCAG 2.1 AA accessibility standards and their application across frontend and backend developmentStrong written and verbal communication skills, able to translate technical decisions for non-technical audiences including federal agency stakeholdersPrior experience with federal agency digital services or government contracting environmentsExperience with event-driven architectures using AWS SNS/SQS and Lambda/Step FunctionsFamiliarity with consumer-driven contract testing using Pact or API contract governance across microservicesExperience with SAFe or scaled Agile delivery frameworks including PI planning and ART coordinationExposure to third-party integrations such as Pay.gov, login.gov, or identity/authentication platformsExperience mentoring engineers in a cross-functional federal delivery environmentBenefitsCompany-subsidized health, dental, and vision insuranceFlexible PTO401K with employer matchPaid parental leave after one year of serviceEmployee Assistance ProgramCompany OverviewAd Hoc is a digital services company that helps the federal government better serve people. It was founded in 2014, and is headquartered in Washington, District of Columbia, USA, with a workforce of 501-1000 employees. Its website is https://adhoc.team/.