Principal Engineer

Primeline; United States; Remote; USD 150,000 - 210,000; Full time

Job summary

Primeline is seeking a senior technical authority to guide architecture decisions across multiple engagements, blending hands-on systems work with leadership, mentoring, and strategic customer conversations.

You will lead architecture reviews, develop playbooks for multi-tenancy, observability, and performance; mentor engineers; and articulate architectural trade-offs to customers. This role moves across engagements to provide focused technical leadership and advance engineering practices.

Qualifications

• 8+ years building and operating production systems.
• Experience delivering a multi-tenant SaaS at meaningful scale.
• Clear, well‑reasoned technical opinions with flexibility to revise them when evidence changes.
• Strong written communication skills.
• Demonstrated success mentoring senior engineers.

Responsibilities

• Lead architecture reviews across active projects and help resolve complex technical decisions.
• Develop practical engineering playbooks covering multi-tenancy, observability, and performance.
• Mentor senior engineers and contribute to their technical growth and effectiveness.
• Advise prospective customers on technical strategy and communicate architectural trade-offs clearly.
• Move between engagements as needed to provide focused technical leadership.

Skills

Technical leadership

SaaS architecture

Mentoring

Written communication

Job description

Role overview

Serve as a senior technical authority across multiple engagements, helping teams make sound architecture decisions and strengthening engineering practices. The role combines hands‑on systems expertise, technical leadership, written guidance, mentoring, and participation in strategic conversations with prospective customers.

Responsibilities

• Lead architecture reviews across active projects and help resolve complex technical decisions.
• Develop practical engineering playbooks covering areas such as multi‑tenancy, observability, and performance.
• Mentor senior engineers and contribute to their technical growth and effectiveness.
• Advise prospective customers on technical strategy and communicate architectural trade‑offs clearly.
• Move between engagements as needed to provide focused technical leadership.

Requirements

• At least 8 years of experience building and operating production systems.
• Experience delivering a multi-tenant SaaS product at meaningful scale.
• Clear, well‑reasoned technical opinions combined with the flexibility to revise them when evidence changes.
• Strong written communication skills.
• Demonstrated success mentoring senior engineers.