Senior Software Engineer - Core Platform

Who we are

Picogrid builds hardware and software infrastructure to connect and control the systems that power critical industries. Our platform unifies sensors, platforms, and operators to power mission planning, autonomous system control, and real-time decision-making.

We partner directly with operators, technology companies, and federal agencies to deliver rapidly deployable, mission-critical capabilities where they're needed most, often on short timelines and in challenging conditions. Our technology is trusted in active operations, not just test environments, and we move quickly to close real-world capability gaps for those on the front lines.

Joining Picogrid means working on high-impact problems at the intersection of autonomy, national security, and cutting-edge technology. You'll be part of a small, elite team that builds and ships systems used by the leading organizations around the world. We operate with urgency, ownership, and a deep respect for the mission.

Role Overview

Picogrid is seeking a Senior Software Engineer to design, build, and deploy high-performance, scalable software systems that power critical defense missions. This is a hands-on engineering role focused on building the backend platform and integration tools that support the next generation of connected defense infrastructure.

We are creating mission-capable systems that serve the warfighter in all environments and domains. Legion is a platform that connects government and commercial systems across various domains and command layers for mission autonomy and base defense. On the Legion team, you will be constantly innovating, building resilient, scalable, and flexible systems that will shape the future of defense capabilities by building a robust self-service integration platform. If you're passionate about building technology that supports the warfighter, first responders, and commercial customers, we want to hear from you.

This role is ideal for someone who enjoys solving complex problems at the system level, thrives in fast-paced environments, and wants to build technology that directly real-world military missions.

Mission & Scope

As a Senior Software Engineer, you'll play a key role in delivering real-time, reliable, and secure software solutions that function seamlessly across hybrid environments. You'll work across microservices, APIs, data pipelines, and integration tooling to help unify field systems and bring autonomy to the edge.

This position involves more than just code-it requires deep systems thinking, strong collaboration, and the ability to work directly with end users to solve real operational challenges.

Required Qualifications

• U.S. citizenship and ability to obtain and maintain a Top Secret security clearance
• 7+ years of engineering experience in fast-paced, production environments
• 5+ years of experience in backend development using Go, Java, Python, TypeScript, or similar languages
• Proven experience building microservice architectures and platform tooling
• Strong background in distributed systems, data pipelines, or real-time processing
• Deep experience with relational databases (e.g., PostgreSQL), object stores (e.g., S3, MinIO), and geospatial tools
• Strong grasp of HTTP APIs (REST, gRPC, GraphQL) and authentication / authorization models
• History of working directly with customers to build and deliver meaningful software
• Demonstrated ability to operate with urgency, ownership, and high engineering standards

Preferred Qualifications

Who You Are

Export Control Requirements

To conform to U.S. Government export regulations, applicant must be a (i) U.S. citizen or national, (ii) U.S. lawful, permanent resident (aka green card holder), (iii) Refugee under 8 U.S.C. § 1157, or (iv) Asylee under 8 U.S.C. § 1158, or be eligible to obtain the required authorizations from the U.S. Department of State.