Senior Software Engineer

Obviant

. Architect, build, and maintain low-latency, high-throughput APIs and microservices using TypeScript, Express, Node.js, and Next.js integrations .

Posted 11/12/2026full-timeArlington • Virginia • United StatesSenior💰 $150,000 - $210,000 per yearWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates expertise in architecting and maintaining low-latency APIs and microservices using TypeScript and Node.js, with a strong focus on optimizing PostgreSQL workflows and managing cloud infrastructure on AWS. Capable of translating complex defense acquisition workflows into resilient backend architectures while supporting AI/ML models.

Highest-signal resume keywords

TypeScript ProficiencyNode.js DevelopmentPostgreSQL OptimizationAWS Cloud ManagementAPI Development

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

Backend EngineeringMicroservices ArchitectureDatabase Schema DesignRESTful APIsGraphQL APIsData Pipeline DevelopmentAnalytical Query BuildingClickHouseDatabricksPerformance Tuning

Soft Skills

CollaborationOwnershipAdaptability

Tools & Technologies

AWSTypeScriptNode.jsExpressPostgreSQLClickHouseDatabricks

Certifications & Qualifications

TS/SCI Security Clearance

Industry Keywords

DefenseGovtechNational Security

Tech Stack

Tools & technologies

AWSCloudDistributed SystemsGraphQLJavaScriptMicroservicesNext.jsNode.jsPostgresTypeScript

About the role

Key responsibilities & impact

Architect, build, and maintain low-latency, high-throughput APIs and microservices using TypeScript, Express, Node.js, and Next.js integrations
Own backend features end-to-end from database schema design through production deployment on AWS
Optimize PostgreSQL relational workflows and build analytical queries and ingestion pipelines in ClickHouse and Databricks
Fuse thousands of structured and unstructured defense data sources
Build data pipelines, retrieval systems, and backend services supporting AI/ML models and real-time intelligence
Collaborate with product, data, and end-users to translate defense acquisition workflows into resilient backend architectures

Requirements

What you’ll need

5+ years of backend engineering experience building and scaling production APIs, distributed systems, and data-intensive applications
Deep proficiency in TypeScript/Node.js and RESTful or GraphQL APIs with Express
Experience with PostgreSQL query optimization, indexing, and schema design
Experience with ClickHouse, Databricks, or similar big data platforms
Experience deploying, scaling, and managing cloud infrastructure on AWS
Experience owning complex backend systems end-to-end from architecture through monitoring and performance tuning
Ability to work in a high-ownership, fast-paced early-stage startup
Government, govtech, or defense experience welcome but not required
Passion for the national security mission
Ability to obtain and maintain a TS/SCI security clearance
U.S. work authorization or ability to obtain employer visa sponsorship
Willingness to work in an in-person and/or hybrid capacity from the Arlington, VA office, or willingness to relocate to the DC area

Benefits

Comp & perks

Flexible schedule
Work from home when needed
Sizeable equity
Flexible vacation time
Full health, dental, and vision insurance