Full-Time

Senior Software Engineer

Spear AI

Spear AI

51-200 employees

AI-enabled defense software and maritime sensors

No salary listed

No H1B Sponsorship

Washington, DC, USA

In Person

The posting also describes remote and flexible arrangements, but the ATS location marks this position as on-site.

US Top Secret Clearance Required

Category
Software Engineering (1)
Required Skills
LLM
Kubernetes
FastAPI
Python
JavaScript
React.js
MySQL
Node.js
Java
Postgres
GraphQL
Docker
Microservices
SAML
AWS
Go
Vue.js
Redis
MongoDB
REST APIs
DevOps
Angular
Spring
Django
OAuth

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Requirements
  • At least 8 years of hands-on software development experience building production systems.
  • An active Top Secret/Sensitive Compartmented Information clearance with the ability to obtain a Counterintelligence Polygraph.
  • Expertise in multiple programming languages and technology stacks, including a modern JavaScript framework such as React, Angular, or Vue, plus at least one back-end language or framework such as Python, FastAPI, Django, Node.js, Java, Spring, or Go.
  • Strong understanding of software architecture patterns, system design, and application programming interface design using REST and/or GraphQL.
  • Experience with relational and non-relational databases such as PostgreSQL, MySQL, MongoDB, or Redis.
  • Experience with cloud-native development and containerization using Docker and Kubernetes.
  • A proven track record of leading technical teams and mentoring developers.
  • Deep knowledge of secure coding practices, authentication and authorization using OAuth, SAML, or OIDC, and performance optimization.
  • Ability and willingness to rapidly learn novel artificial intelligence platforms, frameworks, and tool integrations, including those enabling agentic artificial intelligence capabilities.
Responsibilities
  • Lead the design and implementation of complex full-stack systems, services, and applications supporting the customer's artificial intelligence, machine learning, and analytic mission.
  • Architect end-to-end solutions across front-end user interfaces, back-end services, application programming interfaces, and data layers.
  • Develop and maintain RESTful application programming interfaces, microservices, and event-driven architectures.
  • Build and improve user interfaces and operator-facing dashboards used in mission workflows.
  • Provide technical mentorship and guidance to mid-level and junior-level developers.
  • Establish coding standards, best practices, and development processes across the team.
  • Drive technical decision-making, technology selection, and architectural direction.
  • Collaborate with cross-functional teams, including data engineers, artificial intelligence and machine learning engineers, and mission analysts, on system integration and optimization.
  • Lead code reviews and ensure software quality, security, and performance standards.
  • Develop and maintain technical documentation, system specifications, and architecture decision records.
  • Identify and implement performance optimizations and scalability improvements.
  • Own and improve continuous integration and continuous delivery pipelines, build automation, and DevSecOps practices across the development lifecycle.
  • Design, develop, and operate Model Context Protocol servers and tool integrations enabling agentic artificial intelligence capabilities for mission users.
Desired Qualifications
  • A Top Secret/Sensitive Compartmented Information Counterintelligence Polygraph clearance.
  • Strong Amazon Web Services cloud skills, including Elastic Container Service, Elastic Kubernetes Service, Lambda, Simple Storage Service, Identity and Access Management, Relational Database Service, and CloudWatch.
  • Experience with GitLab and GitLab continuous integration and continuous delivery pipelines.
  • A strong DevSecOps background, including a secure software development lifecycle, static and dynamic application security testing, container scanning, secrets management, and policy-as-code.
  • Experience designing, building, or integrating with Model Context Protocol servers and tool-using large language model systems.
  • Military experience.
  • Intelligence Community experience.

Spear AI builds AI and machine-learning tools for national security and maritime missions. Its Horizon AI Platform labels and manages acoustic data, while Forerunner handles edge AI processing and it also offers field-ready maritime sensors; combined with consulting services on AI strategy and data pipelines, the company provides a deployable hardware-software stack. The solutions help operators interpret passive acoustics to distinguish background sounds from potential threats, improving decision-making and situational awareness in challenging maritime environments. The team’s Navy background and focus on defense use set it apart, aiming to support Navy and allied operations with reliable, integrated tools for detection, data management, and edge computing.

Company Size

51-200

Company Stage

Seed

Total Funding

$2.3M

Headquarters

Washington DC, District of Columbia

Founded

2022

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Simplify Jobs

Simplify's Take

What believers are saying

  • Spear AI raised $2.3 million on 2025-07-25, extending runway and hiring.
  • Spear AI won a $6 million Navy contract for labeling software in 2025.
  • Its 2026-08-05 website shows production maritime sensors and active product expansion.

What critics are saying

  • The U.S. Navy contract and seed funding create dangerous customer concentration.
  • Ultra Maritime and Anduril validated competing undersea stacks at Lanternfish 2026.
  • If Navy procurement shifts to primes, Spear AI's standalone platform becomes irrelevant.

What makes Spear AI unique

  • Spear AI marries Navy veterans' operator intuition with passive-acoustics machine learning.
  • Its Horizon and Forerunner products convert chaotic underwater noise into deployable decisions.
  • It sells sensors, software, and services together, shortening defense adoption cycles.

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Benefits

Unlimited Paid Time Off

Paid Sick Leave

Health Insurance

Dental Insurance

Vision Insurance

11 Paid Holidays

Professional Development Budget

Remote Work Options

Flexible Work Hours

Hybrid Work Options

401(k) Company Match

Relocation Assistance

Employee Referral Bonus

Performance Bonus

Life Insurance

Disability Insurance

Home Office Stipend

Professional Certification Support

Growth & Insights and Company News

Headcount

6 month growth

0%

1 year growth

10%

2 year growth

-1%
Intelligence360 News
Aug 11th, 2025
Spear AI Secures Seed Funding Round

Spear AI announced the completion of its seed funding round with investments from Scare the Bear Capital and Cortical Ventures. The funding will help expand Spear AI's product portfolio, scale its Horizon platform, and enhance maritime sensor capabilities. The company aims to accelerate delivery of AI solutions to defense and commercial partners, focusing on transforming maritime data into actionable intelligence.

Read Magazine
Jul 28th, 2025
Spear AI Secures Seed Funding from Scare the Bear Capital and Cortical Ventures to Accelerate Maritime AI Solutions and Expand Technical Services

Spear AI secures seed funding from Scare the Bear Capital and Cortical Ventures to accelerate maritime AI solutions and expand technical services.

Tekedia
Jul 27th, 2025
Navy Veterans' Startup Spear AI Raises $2.3M, Wins $6M Navy Contract to Revolutionize Underwater Surveillance with AI

In parallel, Spear AI announced a $2.3 million seed funding round backed by venture capital firms with a focus on artificial intelligence and national defense technologies.

TechStartups
Jul 25th, 2025
Spear AI raises $2.3M to bring AI-powered threat detection to U.S. Navy submarines

Spear AI, an AI startup based in Washington, has secured $2.3 million in its first outside funding round to accelerate its work decoding underwater sounds using artificial intelligence, Reuters reported.

VCNewsDaily
Jul 25th, 2025
Spear AI Completes Seed Funding Round

Spear AI, a developer of maritime artificial intelligence solutions based in Washington, DC, has successfully completed its seed funding round.