Senior Software Engineer - Back End (Library of Congress)

Ad Hoc LLC; McLean (VA); Remote; USD 115,000 - 135,000; Full time

Benefits offered by this job

Health, dental, and vision insurance

Flexible PTO

401K with employer match

Parental leave

Job summary

Ad Hoc LLC is a technology company delivering scalable digital services for government programs from coast to coast.

Senior Software Engineer - Back End will own backend services, mentor teammates, and contribute to critical federal civilian work, all in a fully remote setting.

Qualifications

• Bachelor's degree in a relevant field.
• 7+ years of engineering experience.
• Java server-side development expertise.
• Experience with RESTful APIs and OpenAPI specs.
• Proficient in PostgreSQL and Elasticsearch.

Responsibilities

• Design, develop, test, and maintain backend services.
• Lead small projects and mentor engineers.
• Review designs, write design docs and system diagrams.
• Collaborate with stakeholders and clients.
• Participate in technical interviews.

Skills

Java

RESTful APIs

PostgreSQL

Elasticsearch

Docker

AWS

CI/CD

Git/GitLab

JUnit/Pytest

Communication

Education

Bachelor's degree

Tools

Docker

AWS

Git/GitLab

Job description

Job Number: 973 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.

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 - Back End 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 - Back End 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 - Back End include:

• Demonstrate technical expertise, accountability, and ownership of contributions to the application codebase.
• Maintain a strong understanding of adjacent technical areas, systems, and ecosystems to effectively coordinate integrations and dependencies.
• Design, develop, test, maintain, and improve high-quality software solutions across front-end and/or back-end systems.
• Diagnose and resolve complex technical issues within owned systems, using incidents and lessons learned to identify opportunities for system and process improvements.
• Mentor and support junior and mid-level engineers in developing their technical and problem-solving skills.
• Clearly communicate technical concepts, issues, risks, and developments to team members, clients, and stakeholders.
• Participate in technical interviews and help evaluate engineering candidates.
• Use strong technical judgment and influencing skills to propose, evaluate, and recommend approaches to technical and process challenges.
• Provide technical guidance and mentorship to engineers within the team.
• Lead small projects, technical initiatives, or temporary team structures as needed.
• Develop and present design documents, system diagrams, technical recommendations, and other engineering artifacts to clients, stakeholders, partners, and fellow engineers.

Basic Qualifications:

• Bachelor's degree and 7+ years of engineering experience; relevant experience may substitute for education
• Must meet federal suitability requirements and pass a background investigation as a condition of employment
• Proficiency in Java for server-side development
• Experience building and consuming RESTful APIs, including versioned OpenAPI specifications
• Hands-on experience with relational databases (PostgreSQL preferred) and non-relational/search platforms (Elasticsearch)
• Familiarity with containerized deployments using Docker and AWS services (ECS, RDS, S3, Lambda, CloudWatch)
• Experience working in agile environments with CI/CD pipelines and version control via Git/GitLab
• Practice writing automated tests (JUnit, Pytest, or equivalent) and working within quality gate frameworks like SonarQube
• Strong written communication skills for developer-facing documentation

Preferred Qualifications:

• Prior experience with federal agency digital services or government contracting environments
• Familiarity with event-driven architectures using AWS SNS/SQS and Lambda/Step Functions
• Experience with SAFe or scaled Agile delivery frameworks
• Exposure to consumer-driven contract testing (Pact) or API contract governance across microservices
• Experience with third-party integrations such as Pay.gov, login.gov, or identity/authentication platforms
• Terraform or infrastructure-as-code experience

To learn more about working at Ad Hoc, please visit: https://adhocteam.us/join

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 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.

We value the unique skills gained through military service and encourage veterans and transitioning service members to apply.

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 $115,000-$135,000. Our recruiters will be happy to answer any questions you may have, and we look forward to learning more about your salary requirements.

job reference:

https://adhoc.team/