Full Stack Engineer
i3Chantilly (VA)
About the role
Full Stack Engineer Top Secret required Location is Chantilly, VA on site Bachelors required Minimum 10 years experience We are seeking a Full Stack Engineer - Subject Matter Expert (SME). This individual will serve as the principal authority for full-stack architecture, application modernization, secure development practices, and enterprise technology integration. The Full Stack Engineer SME will lead the design, development, and optimization of scalable web applications across both frontend and backend technologies. The role combines strategic technical leadership with hands-on development, ensuring applications are secure, high-performing, interoperable, and aligned with enterprise architecture standards, zero-trust principles, and complex cross-enclave requirements. Skills required Extensive experience with modern frontend frameworks, backend technologies, APIs, and relational/non-relational databases. Strong knowledge of software architecture, system integration, and scalable application design. Experience with secure development practices, DevSecOps methodologies, and CI/CD pipelines. Expertise in database design, performance optimization, and application troubleshooting. Proven ability to lead technical initiatives and establish development standards across teams. Unique Skills / Technical Requirements In-house custom developed data pipeline KubernetesTerraformGitLab CI/CDJFrog ArtifactoryAWS Cloud ServicesUIVue.jsFlaskElixirPhoenix LiveViewDaisy UIETLPythonCriblApache Nifi Database (Postgres) Apache KafkaSplunkCustom GOTS application(s) Complex data parsing and streamlined ingestion Provenance and end-to-end data lineage tracking Schema-aligned ingestion and normalization of diverse structured and unstructured data
Preferred skills:
Master's degree in Computer Science, Engineering, or a related technical field.
Experience supporting federal, defense, intelligence, or highly regulated environments.
Knowledge of cloud-native architectures, containerization, and microservices platforms.
Experience addressing cross-domain or cross-enclave interoperability challenges.
Expertise in zero-trust architectures and secure enterprise application development.
Relevant certifications in cloud technologies, software architecture, cybersecurity, or Agile development.
Before you apply
Applying takes about a minute. These four things decide how fast it moves after that.
Your profile is current
It's what we read first. Occupations, seniority and locations matter more than a long history.
Two examples you can talk through
Not a portfolio — just two pieces of work where you can explain the decisions and what you'd change.
A number in mind
What you're on now and what would make you move. We negotiate better when we know both.
Your notice period
Employers plan around it, and it's the question that stalls offers most often.
Once you apply, someone reads it and calls you before anything reaches the employer — usually within two working days.