Principal Full-Stack Engineer & Tech Leader

Fidelity Investments Inc.; Dublin; On-site; EUR 120,000 - 160,000; Full time

Job summary

Fidelity Investments Inc. is seeking a Principal Engineer to provide day-to-day technical leadership for a Plan Sponsor WorkStation product delivery team within Stock Plan Services.

The role balances delivery commitments, architectural direction, and long-term maintainability while partnering with engineering and product leaders to align with enterprise standards. You will mentor engineers, influence technical decisions, and drive quality practices across units to reduce risk and deliver

Qualifications

• Bachelor’s degree or equivalent in a technology-related discipline.
• 8+ years of software engineering experience, including significant experience building, delivering, and supporting enterprise applications.
• Proven experience leading the delivery of complex software solutions in large-scale environments.
• Experience acting as a technical lead for teams delivering business-critical applications.
• Demonstrated ability to influence technical decisions and drive alignment across engineers, product, architecture, and business stakeholders.
• Experience balancing feature delivery, technical debt reduction, platform improvements, and operational priorities.
• Experience using GitHub Copilot or similar AI-assisted engineering tools is desirable.

Responsibilities

• Provide technical leadership and guidance to engineers across the delivery team.
• Drive engineering decisions aligned with architectural direction.
• Partner with Architects to evaluate solution options and contribute to long-term strategy.
• Identify and proactively manage technical, delivery, and operational risks.
• Support engineering and product leadership in technical trade-off decisions.
• Establish engineering standards, development practices, and quality expectations.
• Reduce duplication across applications and delivery teams through common patterns.
• Drive technical alignment across delivery teams, applications, and partner organisations.
• Identify opportunities to simplify architecture, reduce technical debt, and modernise legacy implementations.
• Provide technical decision leadership while ensuring alignment with enterprise standards.
• Lead production issue resolution, root cause analysis, and prevention activities.
• Ensure solutions meet security, performance, accessibility, resilience, supportability, and observability standards.

Skills

Technical leadership

Mentoring

Stakeholder alignment

Problem solving

Education

Bachelor’s degree or equivalent in a technology-related discipline

Tools

Angular

TypeScript

RxJS

Signals

Nx/monorepo

REST/API

CI/CD

AWS

Observability

Testing

Security

Accessibility

Job description

Fidelity Investments Inc. is seeking a Principal Engineer to provide day-to-day technical leadership for a Plan Sponsor WorkStation product delivery team within Stock Plan Services.

The role balances delivery commitments, architectural direction, and long-term maintainability while partnering with engineering and product leaders to align with enterprise standards. You will mentor engineers, influence technical decisions, and drive quality practices across units to reduce risk and deliver