Principal Software Engineer

Principal Software Engineer

The Principal Software Engineer operates at the intersection of deep technical execution, enterprise architecture, and engineering leadership, setting the technical direction for the eCommerce platform and adjacent systems while remaining actively hands-on in design, development, and delivery. With 15+ years of progressive engineering experience, the Principal Engineer owns the long-term application and solution architecture of Radwell's ecosystems, drives cloud modernization initiatives, and shapes the engineering culture through mentorship, coaching, and principled technical governance. This engineer is the technical authority others turn to for hard architecture decisions, cross-team alignment, and setting engineering standards. They lead from the front, writing production code, authoring architectural decision records, participating in the Architecture Review Board, and building the technology roadmap that guides the organization's next three to five years.

Other duties may be assigned.

• Set and own the application and solution architecture of the eCommerce platform, including domain boundaries, service contracts, data flows, and integration patterns across microservices, micro-frontends, ERP, and CRM systems.

• Lead and actively participate in the Architecture Review Board (ARB), authoring proposals, facilitating design reviews, enforcing standards, and ensuring architectural consistency across the engineering organization.

• Build and maintain the multi-year technology roadmap for the eCommerce platform, aligning cloud modernization, platform capability investments, and AI adoption with business strategy and measurable outcomes.

• Drive cloud modernization initiatives from legacy systems to cloud-native Azure architectures, owning migration strategy, risk mitigation, and delivery execution across engineering teams.

• Architect and govern the observability, monitoring, and alerting strategy for all production eCommerce systems, including distributed tracing, SLO/SLA definitions, error budgets, and on-call standards.

• Own the security and compliance architecture across the eCommerce platform, embedding DevSecOps practices, leading threat modeling sessions, and ensuring adherence to PCI-DSS, GDPR, and other applicable frameworks.

• Design and enforce CI/CD automation standards, test automation strategy, and quality gate policies across engineering teams, driving continuous improvement in deployment frequency and change failure rates.

• Lead hands-on architecture and implementation of AI-powered features, LLM integrations, and agentic workflows within the eCommerce platform, and define the patterns and standards teams follow to build AI capabilities safely and sustainably.

• Champion Domain Driven Design, clean architecture, and software engineering best practices across the engineering organization through hands-on coaching, code review, ADR authorship, and architecture guilds.

• Mentor and coach senior and mid-level engineers, identifying growth opportunities, providing structured feedback, and building a pipeline of strong technical talent.

• Collaborate with product, data engineering, and business stakeholders to translate long-horizon business goals into concrete, phased technical initiatives with clear milestones and success criteria.

• Instrument and evolve data engineering pipelines that feed eCommerce personalization, pricing, inventory, and reporting capabilities, working alongside data engineering and analytics teams.

• Author and maintain engineering standards, software development principles, and best practices documentation that governs how software is designed, built, tested, and operated at Radwell.

• Respond to and lead resolution of high-severity production incidents, conducting thorough post-incident reviews and driving systemic reliability improvements.

• Adhere to and reinforce development standards: check-in policies, static code analysis, naming conventions, and documentation requirements.

Performance will be measured on the quality and impact of architectural decisions delivered; progress against the technology roadmap; measurable improvements in platform reliability, performance, and security posture; AI feature business outcomes; growth and capability development of engineers mentored; and contribution to engineering standards and governance. Engineering quality metrics include deployment frequency, change failure rate, MTTR, test coverage, and Core Web Vitals scores.

• 15+ years of progressive software engineering experience, with a clear track record of growth into principal or staff-level IC roles in complex, high-scale systems.

• Demonstrable expertise as an application and solution architect: has owned end-to-end system design, led architecture reviews, and driven multi-year platform evolution.

• Expert-level proficiency in C#, .NET Core, Java, Python, Go, React.js, Next.js, and TypeScript, with a strong portfolio of production eCommerce systems at scale.

• Deep, hands-on knowledge of microservice and micro-frontend architectural patterns, with experience governing these across multi-team engineering organizations.

• Expert-level knowledge of Domain Driven Design, Event-Driven Architecture, and software design patterns applied in large enterprise codebases.

• Proven cloud modernization experience on Microsoft Azure, with certifications such as AZ-305 (Azure Solutions Architect Expert) strongly preferred.

• Deep CI/CD automation, DevSecOps, and Infrastructure as Code experience in production engineering environments.

• Demonstrable experience designing and operating observability, monitoring, and alerting systems for distributed commerce platforms.

• Production AI engineering experience: has architected and shipped LLM-powered, agentic, or RAG-based features to real end-users in commerce or enterprise contexts.

• Proven people leadership impact: has mentored senior engineers, led architecture guilds, and raised engineering quality across teams.

• Experience building and presenting multi-year technology roadmaps to engineering leadership and business stakeholders.

• Strong written and verbal communication skills; able to produce and present architecture proposals, roadmaps, ADRs, and engineering standards documentation.

• Experience with industrial or B2B eCommerce platforms

• Experience with GraphQL federation across a micro-frontend architecture

• Experience with chaos engineering for production reliability

• BS, MS, or equivalent degree in Computer Science, Software Engineering, or a related technical discipline.

• Equivalent professional experience, architectural portfolio, and demonstrated engineering leadership may substitute for formal education.

• Continuous sitting and typing for extended periods.

• Lifting requirements include occasional lifting of up to 25 pounds.

• Frequent walking or standing may be required at times.

• Introductory Review — Written at approximately 80 days after employment to determine whether employment will continue.

• Monthly Reviews — Brief written review focused on quantitative performance and measurement of activity, with objectives for the upcoming month.

• Annual Reviews — Monthly reviews factor in along with attendance, job knowledge, overall performance, and dependability.

This is an exempt position requiring a work schedule that achieves the results and objectives identified by the company. Generally, the schedule for this position will be 8:00am–5:00pm, Monday through Friday, with one hour for lunch. Nights and weekends may be worked as required based on current project and implementation needs, deadlines, and workload. Employees are expected to begin work on time and adhere to accepted time-off policies.

Radwell offers a comprehensive benefits package including health, dental, and vision coverage. The Company provides company sponsored short-term and long-term disability benefits, as well as $50,000 in Life insurance. These benefits, along with additional voluntary benefits, are available to all regular full-time employees beginning on first day of employment. All employees are automatically enrolled at 3% into the Company's 401(k) Plan on the first of the month following 90 days of continuous employment. Employees are eligible for common paid Company Holidays and 15 days of PTO annually, which begin accruing on first date of employment and may be used immediately upon joining the team.

The recruiting base salary range for this full time position is $140,000.00 - $180,000.00 /year. Within the range, individual pay is determined by factors, including job-related skills, experience, and relevant education or training. Additionally, this role is bonus-eligible, with a target bonus percentage that provides an opportunity to earn even more based on company performance.