Senior Software Engineer (Backend) - Remote at ICF in Reston, VA

Senior Software Engineer (Backend) - Remote Location: Reston, VA The Work:  ICF is looking for an enthusiastic Senior Software Engineer to join our team and help with development and maintenance of our backend APIs that support a significant program with the Centers for Medicare & Medicaid Services (CMS). If you are Senior Software Engineer interested in applying your expertise in software engineering in a consulting environment, then this may be the role for you. Job Location: This position requires that the job be performed in the United States.  If you accept this position, you should note that ICF does monitor employee work locations and blocks access from foreign locations/foreign IP addresses,  and also prohibits personal VPN connections. Our core work hours are 10am - 4pm Eastern Time with the option to start earlier or work later depending on your time zone. However, please note our client is on the east coast and may sometimes start a meeting earlier than 10:00 which may require your participation. Travel for a conference or to another ICF location for collaboration may be required once a year. What You Will Do: The selected candidate will be required to work on several different APIs and publications of data sets and must be able to develop in an Agile methodology.  application and environment. Responsibilities include but may not be limited to: Backend API Development and Maintenance Data Storage and ETL Engineering Working in an AWS Cloud base environment Unit Test Writing Working with a Scrum Team using Agile Writing documentation in Confluence and using JIRA for User Stories. Performance Testing Participate in all team meetings Minimum Requirements: Bachelor's Degree 5+ years of professional software development experience Candidate must be able to obtain and maintain a Federal Public Trust Candidate must reside in the U.S., be authorized to work in the U.S., and all work must be performed in the U.S. Candidate must have lived in the U.S. for three (3) full years out of the last five (5) years What You Will Bring With You: TypeScript / JavaScript — backend services, async patterns, Node.js runtime Python 3 — data engineering, ETL pipelines, type hints, abstract base classes SQL — analytical queries, schema design, query optimization across PostgreSQL and MySQL NestJS Framework — modules, controllers, services, dependency injection, guards, middleware, decorators RESTful API design — resource modeling, HTTP semantics, versioning ETL pipeline design — extract → transform → validate → publish lifecycle; idempotency patterns; runtime business rule validation S3 — file storage, S3A filesystem integration with Spark, lifecycle conventions Docker — multi-stage Dockerfiles, docker-compose for local dev clusters, environment parity with production runtimes ORM proficiency — TypeORM (entity modeling, migrations, query builder, transactions) Authentication & authorization — JWT/Bearer tokens and policy-based authz with role/claim evaluation Apache Spark (PySpark) — distributed compute, DataFrame I/O, Spark SQL, EMR Serverless job configuration and submission Pandas / NumPy — in-process data transformation, vectorized operations, statistical aggregations Vitest and Jest — unit and integration testing, high coverage discipline (95%+ thresholds) pytest — Python unit and integration testing; mocking AWS services Structured logging — contextual request/job logging APM tooling — Datadog familiarity a plus Dependency security — Snyk, CVE remediation, automated dependency updates (Dependabot) PostgreSQL — schema design, JDBC integration, query optimization MySQL / Aurora MySQL — schema design, indexing, migrations Amazon Redshift — analytical SQL, serverless cluster connectivity, credential management AWS CodeBuild — CI/CD pipeline authoring, multi-step buildspecs, secret injection EMR Serverless — PySpark job submission, monitoring, custom Python SSM Parameter Store — runtime secret and config injection TypeScript linting — ESLint 9, TypeScript ESLint, Prettier, Husky + lint-staged pre-commit hooks Python linting — Ruff (lint + format), isort, pip-compile for deterministic dependency pinning Federal Government contracting work experience Prior experience in consulting or healthcare highly preferred Professional Skills: Good leadership and team-working skills. Highly effective analytical, problem-solving, and decision-making capabilities. Excellent communication and interpersonal skills to interface effectively at all levels of the business. Organized, detailed oriented and able to prioritize and multi-task. Ability to self-organize, prioritize and conduct work on multiple projects under tight deadlines in a fast-paced environment. #DMX-HES #Li-cc1 #Indeed Working at ICF ICF is a global advisory and technology services provider, but we’re not your typical consultants. We combine unmatched expertise with cutting-edge technology to help clients solve their most complex challenges, navigate change, and shape the future. We can only solve the world's toughest challenges by building a workplace that allows everyone to thrive. We are an equal opportunity employer.Together, our employees are empowered to share theirexpertiseand collaborate with others to achieve personal and professional goals. For more information, please read our EEOpolicy. We will consider for employment qualified applicants with arrest and conviction records. Reasonable Accommodations are available, including, but not limited to, for disabled veterans, individuals with disabilities, and individuals withsincerely heldreligious beliefs, in all phases of the application and employment process. To requestan accommodation,please email Candidateaccommodation@icf.com and we will be happy toassist. All information you provide will be kept confidential and will be used only to the extentrequiredto provide needed reasonable accommodations. Read more about workplace discrimination rightsor our benefit offerings which are included in the Transparency in (Benefits) CoverageAct. Candidate AI Usage Policy At ICF, we are committed to ensuring a fair interview process for all candidates based on their own skills and knowledge. As part of this commitment, the use of artificial intelligence (AI) tools to generate orassistwith responses during interviews (whether in-person or virtual) is notpermitted. This policy is in place tomaintainthe integrity and authenticity of the interview process. However, we understand that some candidates may require accommodation that involves the use of AI. Ifsuch anaccommodation is needed, candidates are instructed to contact us in advance at candidateaccommodation@icf.com. Weare dedicated to providingthe necessary support to ensure that all candidates have an equal opportunity to succeed. Pay Range - There are multiple factors that are considered in determining final pay for a position, including, but not limited to, relevant work experience, skills, certifications and competencies that align to the specified role, geographic location, education and certifications as well as contract provisions regarding labor categories that are specific to the position. The pay range for this position based on full-time employment is: $98,614.00 - $167,644.00 Nationwide Remote Office (US99)