Senior Software Engineer
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Before you apply
Salary$160k – $220k
LocationSan Francisco, United States
Typefull-time
SenioritySenior
Experience3+ yrs
DepartmentEngineering
Company size4+ people
PostedMar 28, 2026 · 7mo ago
Verified live17h ago
May no longer be actively hiring
Posted by the company on Mar 28, 2026
At a glanceSummarised by Seekless from the posting.
3+ years of experience building software products for operators or other users with demanding workflows
Experience owning and shipping production systems across frontend, backend, and API layers
Strong judgment about how to make software clear, dependable, and usable in operational settings
Ability to translate ambiguous user needs into pragmatic product and engineering decisions
Strong proficiency in TypeScript, React, and Python
Experience designing and working with databases and common database frameworks
Experience building and maintaining backend services, internal APIs, and data-intensive applications
Strong communication skills and the ability to work effectively across highly collaborative technical teams
Experience building software for robotics, aerospace, defense, industrial, or other operationally demanding environments
Experience with mapping, geospatial systems, mission planning tools, or telemetry-heavy applications
Experience building software that spans cloud services and edge-deployed systems
Skills
React
TypeScript
Python
databases
Who we are
Theseus builds visual positioning systems for autonomous aircraft operating in GPS-denied and contested environments. Our software enables reliable navigation and mission execution when conventional navigation systems fail, and our products are already being deployed in real-world operational settings.
We are building the software stack that turns advanced autonomy, mapping, and mission capabilities into practical systems operators can rely on in the field. That includes the software used to configure systems, plan missions, move maps and data through operational workflows, and understand mission performance before, during, and after deployment.
The role
We are seeking a Senior Software Engineer to build the software layer operators rely on before, during, and after mission execution.
This is a product-oriented engineering role for someone who has experience building software for operators or other demanding real-world users and can work across the stack. You will contribute to the APIs that live on the edge and interface with deployed systems, the backend services that support map generation and mission workflows, and the frontend applications operators use, including Vozilla and related tools. You should be comfortable building reliable, understandable, user-facing systems in environments where performance, clarity, and operational usefulness matter.
Responsibilities
You will:
•
Build operator-facing software across mission planning, data workflows, and mission analysis
•
Develop frontend applications, backend services, and internal APIs across edge and cloud systems
•
Work across React, TypeScript, Python, and database-backed systems to support deployed products and map-generation workflows
•
Partner with autonomy, field, and integration teams to translate operational needs into reliable product features
•
Move quickly from ambiguous user needs to shipped software, improving reliability, performance, and usability through feedback from real deployments
You should have the following
•
3+ years of experience building software products for operators or other users with demanding workflows
•
Experience owning and shipping production systems across frontend, backend, and API layers
•
Strong judgment about how to make software clear, dependable, and usable in operational settings
•
Ability to translate ambiguous user needs into pragmatic product and engineering decisions
•
Strong proficiency in TypeScript, React, and Python
•
Experience designing and working with databases and common database frameworks
•
Experience building and maintaining backend services, internal APIs, and data-intensive applications
•
Strong communication skills and the ability to work effectively across highly collaborative technical teams
Nice to have
•
Experience building software for robotics, aerospace, defense, industrial, or other operationally demanding environments
•
Experience with mapping, geospatial systems, mission planning tools, or telemetry-heavy applications
•
Experience building software that spans cloud services and edge-deployed systems
Salary Range
$160,000 - $220,000