Sr Principle Software Engineer- Core Systems & Libraries (Remote) PART TIME
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Position Overview & Specifications
Date Posted:
2026-08-07Country:
United States of America
Location:
US-FL-REMOTEPosition Role Type:
RemoteU.S. Citizen, U.S. Person, or Immigration Status Requirements:
U.S. citizenship is required, as only U.S. citizens are authorized to access information under this program/contract.
Security Clearance Type:
None/Not Required
Security Clearance Status:
Not Required
Design the Foundation of Next-Generation Avionics
Join the growing Collins Aerospace Core Systems and Libraries team and play a key role in shaping the software foundation that powers modern aircraft. We are seeking a Senior Principal Software Engineer who thrives on solving complex technical challenges and driving high-impact solutions across safety-critical systems.
In this role, you will lead the architecture and development of core software components, libraries, and tools that enable scalable, certifiable avionics platforms. You’ll work across the full software lifecycle, partnering with cross-functional teams to deliver high-quality solutions aligned with civil and military certification standards.
This is a unique opportunity to influence system-level design, advance open architecture initiatives, and contribute to technologies that define the future of aerospace.
This is a part-time position with a scheduled workweek of 30 hours.
What You Will Do
Lead the architecture and design of core software components, libraries, and tooling aligned to avionics system requirements
Drive technical direction and execution across development and verification activities for safety-critical software (DO-178)
Define and manage software requirements, decomposition, and traceability across complex systems
Develop and verify software using modern C++ and object-oriented design principles
Own and produce DO-178 certification artifacts, including DAL-A deliverables
Lead and support certification efforts, including engagement with customers and regulatory authorities
Conduct and contribute to peer reviews to ensure quality, consistency, and compliance across the lifecycle
Collaborate cross-functionally with engineering, program leadership, and customers to align technical solutions with program objectives
Willing and Able to travel as required (domestic and international
Candidate Selection & Onboarding Process
Application & Resume Screening
Submit your tailored CV/Resume directly to the talent acquisition portal.
Technical & Competency Interviews
Virtual interviews with the hiring manager and multidisciplinary team.
Formal Offer & Benefits Negotiation
Written agreement outlining compensation, equity, retirement vesting, and relocation allowances.
Onboarding & Corporate Integration
Equipment provisioning, team orientation, and commencement of duties.
United Kingdom Right to Work & Skilled Worker Visa Guide
Employment in the United Kingdom requires legal Right to Work verified under the Home Office Points-Based Immigration System:
Sponsoring employers must hold an active Home Office A-rated Sponsor License and assign a valid Certificate of Sponsorship (CoS). Role must meet the general minimum salary threshold (£38,700) or occupation going rate.
Continuous employment under Skilled Worker status establishes eligibility for Indefinite Leave to Remain (ILR) after 5 continuous years, leading to British Citizenship.
Candidate Preparation Blueprint: Software Engineering
Based on transatlantic hiring benchmarks for Sr Principle Software Engineer- Core Systems & Libraries (Remote) PART TIME roles across RTX's corporate sector, successful applicants typically excel across three core dimensions:
Demonstrated portfolio evidence, architecture/system design case studies, or validated professional certifications directly applicable to Software Engineering.
STAR method competency responses highlighting cross-functional leadership, conflict resolution, and delivering measurable enterprise ROI under tight timelines.
Total compensation expectation aligned within the benchmarked £37,251 - £43,254 bracket, including retirement vesting and health parity.
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