Principal Software Engineer

Protingent; Redmond (WA); Hybrid; USD 155,000 - 215,000; Full time

Job summary

Protingent Staffing in Redmond, WA is seeking a Principal Software Engineer to elevate engineering across multiple teams. You will mentor engineers, drive architectural decisions, and own cross‑cutting concerns such as scalability, reliability, and security.

You will work hands-on across Go, TypeScript, C#, and React, participate in on‑call rotations, engage with product and executives, and shape system architectures for B2B portals, APIs, and internal platforms.

Qualifications

• 10+ years of software development with progression to shaping org-wide software approaches.
• Deep architectural experience spanning multiple services, teams, or domains.
• Hands-on engineering across the full stack with capability to dive deep in Go, TS, C#, React.

Responsibilities

• Elevate engineering judgment through design reviews, architecture guidance, and mentorship.
• Troubleshoot and resolve the hardest cross-system problems in the stack.
• Participate in on-call rotations to ensure reliability and quick issue resolution.
• Engage with product and exec stakeholders to assess feasibility, cost, and risk of strategic initiatives.
• Drive architectural decisions and technical direction across teams and systems.

Skills

Go

TypeScript

C#

React

Cloud architecture

SQL databases

Data pipelines

On-call & reliability

Mentorship

Full stack engineering

Tools

GraphQL

Infrastructure as Code

Containerization

Observability

Job description

Principal Software Engineer

Protingent Staffing has an exciting direct-hire opportunity for a Principal Software Engineer.

Responsibilities

• Elevate the technical judgment of engineers through design reviews, architectural guidance, and mentorship.
• Troubleshoot and drive resolution of the hardest cross-system problems in our stack.
• Participate in on‑call rotation to ensure system reliability and rapid issue resolution.
• Engage directly with product and executive stakeholders to assess feasibility, cost, and risk of strategic initiatives.
• Drive architectural decisions and technical direction across multiple teams and systems.
• Directly build and ship software that tackles the hardest, most ambiguous technical problems in our stack.
• Set the engineering standard through your own code, design patterns, and technical approach.
• Own cross‑cutting concerns: scalability, reliability, security posture, and cloud cost efficiency.
• Identify converging efforts across teams and consolidate before they become compounding tech debt.
• Design and evolve system architectures for our B2B portals, collaboration tools, internal platforms, and customer‑facing APIs.
• Evaluate build‑vs‑buy decisions, technology bets, and system design tradeoffs with direct business impact.

Qualifications

• 10+ years of software development experience, progressing from shipping great software to shaping organizational software development approaches.
• Deep architectural experience designing systems that span multiple services, teams, or domains.
• Exceptional hands‑on engineering skills across the full stack, with the ability to go deep on the hardest problems in any part of the system.
• Strong proficiency across multiple languages and comfortable ramping quickly on ones you haven't used before. Stack includes Go, TypeScript, C#, and React.
• Proven ability to own the full software development lifecycle, from requirements and design through construction, testing, deployment, and production operations.
• Experience with cloud architecture and resource‑efficient infrastructure design at scale.
• Full ownership mentality that extends beyond your own code to the health of systems, culture, and teams around you.
• Strong understanding of SQL databases, caching layers, event‑driven architectures, and data pipeline design.
• Pragmatic technical judgment that optimizes for the right solution given real constraints, not the theoretically perfect one.
• Track record of driving technical alignment across teams with competing priorities.
• Enthusiasm for leveraging AI‑assisted development tools and emerging technologies.
• Ability to translate between business language and technical language fluently, in both directions.
• Must have permission to work in the US on a permanent basis.

Preferred Experience

• Experience with healthcare data standards (HL7, FHIR) or regulated industry environments.
• Experience with GraphQL, event‑driven data pipelines, or healthcare integration patterns (EHR, PMS, PBM).
• Advanced DevOps and platform engineering experience including Infrastructure as Code, containerization, and observability at scale.

Job Details

• Job Type: Direct Placement
• Salary Range: $155,000 – $215,000
• Location: Redmond, WA / Remote
• Must be a US Citizen or Green Card holder.