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ICF logo
ICF

Founded in 1969, ICF is a global advisory and technology services company headquartered in Reston, Virginia. It delivers data-driven solutions across energy, environment, infrastru

Senior Software Engineer – Backend

Location

Virginia

Posted

28 days ago

Salary

$98.6K - $167.6K / year

Seniority

Senior

Job Description

Senior Software Engineer – Backend

ICF

• 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. • 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

Job 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
  • 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.

Benefits

  • Reasonable Accommodations are available, including, but not limited to, for disabled veterans, individuals with disabilities, and individuals with sincerely held religious beliefs, in all phases of the application and employment process.

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