Principal Software Engineer / Technical Lead Healthcare Interoperability

Principal Software Engineer / Technical Lead — Healthcare Interoperability

Company: Sovereign Logic Systems LLC

Location: Phoenix Metropolitan Area, Arizona — Strongly Preferred

Work Arrangement: Phoenix-area candidates preferred; hybrid or remote arrangements may be considered for highly qualified applicants.

Experience: 10+ years of professional software engineering experience preferred; minimum 3 years of professional Go (Golang) and JavaScript experience required.

Position

Planned paid, project-based technical leadership engagement, with potential future full-time employment.

Indeed Hiring Timeline

More than 4 weeks. This represents the anticipated recruitment and candidate evaluation period, not a confirmed funding or employment date.

Anticipated Start Date

To be determined. Any project engagement or employment start date is contingent upon sufficient available financing, company authorization, and a separate written agreement.

Potential Future Full-Time Base Salary: $165,000–$195,000 annually, subject to financing, qualifications, and final responsibilities.

About Sovereign Logic Systems

Sovereign Logic Systems LLC is a Phoenix-based, pre-revenue technology company developing proprietary emergency medical information continuity technology and supporting healthcare software applications.

Our planned technology ecosystem includes patient-facing and authorized emergency-responder-facing applications intended to improve access to critical emergency information during time-sensitive situations.

Our goal is to complement existing electronic health records, EMS documentation platforms, hospital systems, and established healthcare infrastructure—not replace them.

We are preparing for a privately financed commercial development program and seeking an experienced Principal Software Engineer / Technical Lead to establish the technical foundation for our software applications.

About the Opportunity

We are seeking a highly experienced, hands-on software engineer with demonstrated technical leadership, software architecture experience, and strong proficiency in Go (Golang), JavaScript, and modern web application development.

The selected professional will evaluate the architecture and development requirements of two interconnected applications: one designed for individuals managing essential emergency information and another intended for authorized emergency medical responders.

The Principal Software Engineer will have responsibility for software architecture recommendations, technology selection, development planning, and software engineering practices.

The company is particularly interested in browser-accessible, cross-platform application development that can support appropriate mobile, tablet, desktop, and rugged-device environments.

However, the final architecture will be determined through technical assessment rather than being mandated in advance.

The position will report to the Founder & CEO and collaborate with established systems architecture and embedded engineering leadership.

We are prioritizing experienced technical leadership before expanding the application software development team.

Recruitment is beginning in advance of financing. The initial engagement is planned as a limited-scope paid project that may proceed only when sufficient financing is available and written authorization has been completed.

Successful collaboration may lead to additional funded milestones or consideration for future full-time employment.

Neither an initial project start date nor future full-time employment is currently guaranteed.

Initial Project Responsibilities

The initial funded engagement will focus on software architecture assessment, engineering coordination, and commercial development planning.

Responsibilities will include:

• Review proposed patient-facing and emergency-responder-facing application workflows, functional requirements, and operational use cases.
• Evaluate browser-accessible, web-first, native, hybrid, and other appropriate software architecture options.
• Assess the suitability of Go (Golang), JavaScript, TypeScript, and related technologies for backend services, application interfaces, and integrated software development.
• Recommend appropriate programming languages, frameworks, databases, infrastructure, and development tools.
• Evaluate secure backend architecture, APIs, user authentication, authorization, and identity-management requirements.
• Assess system behavior during intermittent connectivity, unavailable services, incomplete records, and conflicting information.
• Review patient information management, data provenance, versioning, integrity, and auditability requirements.
• Identify software interfaces and technical dependencies involving the company's underlying continuity technology.
• Evaluate potential healthcare interoperability requirements involving existing EHR, HIE, and EMS/ePCR environments.
• Coordinate with the Systems Architecture & Verification/Validation Lead and Embedded/Firmware Engineering Lead.
• Establish preliminary software development standards, documentation practices, technical review procedures, and testing requirements.
• Identify engineering risks, technology dependencies, resource needs, and implementation constraints.
• Develop a preliminary commercial software development workflow.
• Prepare an initial software engineering Statement of Work (SOW) framework identifying technical deliverables, implementation milestones, staffing requirements, projected effort, and acceptance criteria.

The initial engagement will result in mutually agreed written deliverables and technical recommendations.

The specific schedule, compensation, deliverables, acceptance criteria, and payment arrangements will be established before authorized project work begins.

Potential Future Full-Time Responsibilities

Subject to sufficient financing and a separate employment agreement, the position may expand into leading the company's ongoing commercial software development.

1. Patient-Facing Application Architecture and Development

Lead the architecture and implementation strategy for a secure patient-facing application designed to help individuals create, review, and maintain essential emergency information.

Responsibilities may include:

• Patient onboarding, account creation, and profile management.
• Secure collection and maintenance of essential emergency medical information.
• Patient permissions, consent, and authorized information-access workflows.
• Information update, review, correction, and revocation processes.
• Management of information sources, timestamps, and verification states.
• Secure data storage, synchronization, and record versioning.
• Accessible and multilingual-ready application interfaces.
• Explicit handling of missing, outdated, incomplete, or conflicting information.
• Responsive application experiences across supported devices.
• Integration with approved backend services and underlying system interfaces.

The objective is a practical, user-friendly emergency-information application—not a replacement for comprehensive electronic health records.

2. Emergency Responder Application Architecture and Development

Lead the architecture and implementation strategy for an application intended to support authorized emergency medical personnel.

Responsibilities may include:

• Secure responder authentication, role-based authorization, and access management.
• Patient identification and record-matching workflows.
• Rapid display of essential emergency medical information.
• Clear presentation of record integrity, source, age, completeness, and retrieval status.
• Safe application behavior when information is unavailable, outdated, incomplete, or associated with an uncertain identity.
• Efficient responder workflows appropriate for time-sensitive emergency environments.
• Responsive interfaces for supported mobile devices, tablets, rugged computers, and other authorized endpoints.
• Appropriate behavior during degraded network connectivity or unavailable services.
• Separation of historical patient information from current emergency incident documentation.
• Future interoperability with authorized EMS documentation and healthcare handoff systems.

The application must complement existing EMS operational practices, clinical decision-making, and documentation systems.

3. Software Architecture, Web Development, and Healthcare Interoperability

The Principal Software Engineer will lead commercial software architecture and technical implementation planning.

Responsibilities may include:

• Establishing the architecture for patient-facing, responder-facing, and shared application services.
• Designing secure, maintainable backend systems and APIs.
• Evaluating appropriate uses of Go (Golang), JavaScript, TypeScript, and associated web technologies.
• Defining frontend/backend integration and application communication protocols.
• Designing secure information exchange, authentication, authorization, and audit mechanisms.
• Establishing data models, database architecture, record versioning, and integration contracts.
• Defining supported synchronization, degraded-operation, and recovery-state behaviors.
• Evaluating software compatibility with the underlying embedded continuity technology.
• Assessing standards-based interoperability involving HL7 FHIR, EHR/HIE, and EMS/ePCR systems.
• Developing secure software engineering practices, architecture documentation, and code-review standards.
• Establishing deployment, version control, automated testing, and software release procedures.
• Coordinating cybersecurity, privacy, and application reliability requirements.

The Principal Software Engineer will evaluate the final technology stack in collaboration with the engineering team.

Experience with Go and JavaScript is required for this role, but the selected engineer will not be required to use an unsuitable technology solely because it was identified during recruitment.

Engineering Coordination and Technical Leadership

The Principal Software Engineer will collaborate with existing engineering leadership while maintaining clearly defined responsibilities.

Systems Architecture & Verification/Validation

Lead

• Coordinate software requirements with overall system architecture.
• Review software integration boundaries, technical dependencies, and interface requirements.
• Support requirements traceability, architectural reviews, and verification planning.
• Define system-level acceptance criteria and integration verification requirements.
• Collaborate on technical risk management and design decisions.

Embedded/Firmware Engineering

Lead

• Coordinate requirements involving the underlying embedded technology.
• Define appropriate software-to-device communication and interface requirements.
• Evaluate embedded integration dependencies affecting application architecture.
• Support testing of application interactions with approved hardware and firmware interfaces.
• Collaborate on supported preservation, retrieval, and system-status behavior.

The Principal Software Engineer will not replace the responsibilities of the Systems Architecture & Verification/Validation Lead or Embedded/Firmware Engineering Lead.

Future Application Software Engineer

As financing permits, the Principal Software Engineer may provide technical direction to a future Application Software Engineer responsible for implementing approved application workflows, features, and software services.

Responsibilities may include assigning development tasks, reviewing implementation quality, coordinating integrations, and establishing release milestones.

Future Software QA / Test Engineer

As development expands, the Principal Software Engineer may coordinate with a future Software QA / Test Engineer responsible for:

• Functional and regression testing.
• Automated application testing.
• Software integration and compatibility testing.
• Testing authorization and application failure states.
• Defect tracking and reproducibility.
• Release-readiness documentation.

The Software QA / Test Engineer will collaborate with systems verification leadership while maintaining distinct application testing responsibilities.

These future engineering positions are planned roles and are not currently represented as filled or funded.

Required Qualifications

• Demonstrated senior-level software architecture and technical leadership experience.
• Ten or more years of professional software engineering experience preferred.
• At least three years of professional experience working with Go (Golang) and JavaScript technologies.
• Strong experience designing and developing backend services, APIs, and modern web applications.
• Experience with secure application architecture, authentication, authorization, and data protection.
• Experience integrating frontend and backend application components.
• Demonstrated ability to design maintainable, reliable, and scalable software systems.
• Experience evaluating architecture alternatives and documenting technical decisions.
• Experience establishing software development workflows, specifications, and engineering milestones.
• Experience with software testing, code reviews, version control, and release management.
• Ability to work with systems engineering, embedded engineering, and other technical disciplines.
• Strong written communication, technical documentation, and problem-solving skills.
• Ability to provide hands-on technical leadership and guide future software engineering contributors.

Preferred Qualifications

• Healthcare information technology, digital health, or emergency medical services software experience.
• Experience with HL7 FHIR, EHR/HIE integration, healthcare APIs, or EMS/ePCR interoperability.
• Experience with TypeScript and modern web development frameworks.
• Experience with responsive web applications supporting multiple device types.
• Experience with secure cloud applications, distributed systems, and edge-device integration.
• Familiarity with healthcare privacy requirements and security engineering.
• Experience designing software that handles intermittent connectivity, incomplete information, and degraded system conditions.
• Experience with accessibility and multilingual application design.
• Experience mentoring engineers or leading software development teams.
• Experience developing technical Statements of Work, engineering estimates, and delivery milestones.
• Experience working within an early-stage or pre-seed technology company.

Expertise in every preferred qualification is not required.

Compensation, Financing, and Hiring TimelineInitial Project Engagement

The contemplated initial engagement is a paid, limited-scope technical architecture and planning project.

Compensation will be negotiated as an agreed project fee or lawful hourly arrangement based on the approved scope, qualifications, deliverables, and project requirements.

The project schedule, payment milestones, worker classification, and intellectual-property provisions will be established through a separate written agreement.

No paid project work is currently authorized to begin without sufficient available financing and an executed agreement.

Potential Future Full-Time Employment

If sufficient private investment is secured and both parties agree, the company may consider a separate full-time Principal Software Engineer / Technical Lead appointment.

Anticipated annual base salary: $165,000–$195,000.

Final compensation will depend on qualifications, location, experience, responsibilities, and approved financing.

This salary range applies only to a potential future full-time position and does not represent compensation for the initial project engagement.

Future employment, benefits, equity participation, and start dates are not guaranteed.

Recruitment and Anticipated Start Date

Sovereign Logic Systems LLC has selected "More than 4 weeks" as its anticipated hiring timeline on Indeed to allow sufficient time for candidate identification, technical evaluation, and recruitment discussions.

This selection describes the company's anticipated recruitment process only.

It does not mean financing will be secured within four weeks or at any particular time thereafter.

The anticipated employment or project start date remains to be determined and is expressly contingent upon sufficient financing, company authorization, and execution of an appropriate written agreement.

Candidate evaluation may proceed while the company pursues financing, but recruitment discussions do not constitute an employment offer, guarantee of compensation, or authorization to begin work.

Company Development and Financing

Sovereign Logic Systems LLC is an early-stage, pre-revenue technology company preparing to pursue private investment and federal research funding.

Neither private investment nor a federal research award is currently secured.

We are identifying qualified engineering professionals in anticipation of potential future commercial development.

Project engagements and employment decisions will depend on available financing, business requirements, and mutually agreed written terms.

Confidentiality and Intellectual Property

Sovereign Logic Systems LLC is developing proprietary technology and intellectual property.

This public job description describes the company's proposed application functions and engineering responsibilities without disclosing protected implementation details or confidential technical architecture.

Additional non-confidential information may be shared during interviews. Access to protected technical materials may require appropriate confidentiality arrangements.

Candidates will not be required to create unpaid company-specific architectural designs, implementation plans, or other substantive engineering deliverables as part of recruitment.

How to Apply

Interested applicants should submit:

• A current resume or professional engineering profile.
• A brief description of software platforms or integrated applications they personally architected or technically led.
• Relevant professional experience with Go (Golang), JavaScript, and modern web application development.
• Examples of software architecture, system integration, or healthcare interoperability experience.
• Their availability to work within the Phoenix metropolitan area or proposed alternative work arrangement.
• Their interest in a funding-contingent engagement and preferred initial project compensation structure.

Qualified candidates may be invited to participate in technical discussions with the Founder & CEO and existing engineering leadership.

Please do not submit confidential source code, proprietary employer documentation, or protected customer information.

Sovereign Logic Systems LLC is an equal opportunity employer and welcomes qualified candidates from diverse professional backgrounds.

Pay: $165,000.00 - $195,000.00 per year

Work Location: Hybrid remote in Phoenix, AZ 85013