Senior Software Engineer FS (Library of Congress)

Senior Software Engineer - Full Stack

Job number: 786

This is a remote position.

Ad Hoc is a technology company that empowers organizations to deliver scalable, impactful digital services. Using modern, agile methods, our team creates products that meet people's needs and transform their experience of government.

Work on things that matter

Our collaborations have shaped some of the defining moments in public-sector service delivery. We've helped build products that connect Veterans to tailored services, help millions access affordable health care, and support important programs like Head Start. As we work with agencies to deliver critical services, we're also changing how the government approaches technology.

Built for a remote life

Our culture, communications, and tools are built for remote work, enabling us to bring together top talent nationwide. At Ad Hoc, remote life empowers our teams to design work environments that fit their lives and that foster flexibility and collaboration to achieve positive outcomes for our customers.

Committed to high expectations and a welcoming culture

Ad Hoc values acceptance, accountability, and humility. We aren't heroes. We learn from our mistakes and improve the process for the next time. We build small, inclusive teams to collaborate closely with our partners to solve the right problems and deliver software that works.

The Federal Civilian business unit supports many customers spanning the federal, commercial, and nonprofit space. Our customers include NASA, the General Services Administration, Office of Personnel Management, the Library of Congress, Health & Human Services, and the FDIC. We partner with these agencies to build new capabilities, deliver products, establish data as a strategic asset for informed decision-making, modernize legacy systems, and build the digital service infrastructure necessary to scale their mission impact.

Primary Responsibilities

Senior Software Engineer - Full Stack serves as an experienced individual contributor within a team, with the expectation that you will further develop your leadership, guidance, and mentoring skills. With minimal oversight from leadership, you will be responsible for supporting the goal of meeting scope, schedule, and delivery requirements. A Senior Software Engineer - Full Stack impacts the long-term goals of the program, while contributing to the implementation of the program's development strategy. You may serve as the discipline's primary lead when working with stakeholders and utilize strong influential skills to drive improvements in software engineering processes and practices. Primary expectations of a Senior Software Engineer - Full Stack include:

Design, 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 architecture

Own end-to-end delivery of complex features from story refinement through production deployment, including API design, data integration, frontend implementation, and automated testing

Enforce engineering quality standards including mandatory peer code review, SonarQube quality gate compliance, and resolving security findings in-sprint rather than deferring them

Implement UI designs from Figma specifications using federal Design System components, ensuring WCAG 2.1 AA accessibility standards are met across all frontend work

Lead technical design discussions, author Architecture Decision Records, and present system diagrams and design documents to engineers, product owners, and federal stakeholders

Diagnose and resolve production issues across systems you own, using incidents as opportunities to improve system resilience and inform team knowledge

Actively mentor junior and mid-level engineers, providing code review feedback and guidance that builds technical capability across the team

Contribute to CI/CD pipeline hygiene, infrastructure-as-code standards via Terraform, and GitLab pipeline optimization

Participate in technical interviews and candidate evaluations

May lead small, less critical, or temporary team structures and projects Basic Qualifications

7+ years of relevant engineering experience and a Bachelor's degree, or equivalent additional experience in lieu of a degree

Must meet federal suitability requirements and pass a background investigation as a condition of employment

Expert-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 specifications

Experience building and consuming versioned RESTful APIs with published OpenAPI specifications

Hands-on experience with CI/CD pipelines in GitLab and infrastructure-as-code using Terraform

Working knowledge of WCAG 2.1 AA accessibility standards and their application across frontend and backend development

Strong written and verbal communication skills, able to translate technical decisions for non-technical audiences including federal agency stakeholders Preferred Qualifications

Prior experience with federal agency digital services or government contracting environments

Experience with event-driven architectures using AWS SNS/SQS and Lambda/Step Functions

Familiarity with consumer-driven contract testing using Pact or API contract governance across microservices

Experience with SAFe or scaled Agile delivery frameworks including PI planning and ART coordination

Exposure to third-party integrations such as Pay.gov, login.gov, or identity/authentication platforms

Experience mentoring engineers in a cross-functional federal delivery environment To learn more about working at Ad Hoc, please visit:

Benefits:

Company-subsidized health, dental, and vision insurance

Flexible PTO

401K with employer match

Paid parental leave after one year of service

Employee Assistance Program

Ad Hoc LLC is an Equal Opportunity/Affirmative Action Employer. All qualified applicants will receive consideration for employment without regard to race, color, national origin, ancestry, sex, sexual orientation, gender identity or expression, religion, age, pregnancy, disability, work-related injury, covered veteran status, political ideology, marital status, or any other factor that the law protects from employment discrimination.

In support of various state and city equal pay transparency laws, Ad Hoc job descriptions feature the starting range we reasonably expect to pay to candidates who would join our team with little to no need for training on the responsibilities we've outlined above. Actual compensation is influenced by a wide range of factors including but not limited to skill set, level of experience, and responsibility. The range of starting pay for this role is $125,000 - $138,000. Our recruiters will be happy to answer any questions you may have, and we look forward to learning more about your salary requirements.