Senior/Staff Software Development Engineer

Fortinet

. Lead the migration strategy from legacy frameworks to modern Angular 21+ and React 18+ .

Posted 10/3/2026full-timeSunnyvale • California • United StatesSenior💰 $150,000 - $183,000 per yearWebsite

Core Competencies

Role fit

Core Competencies

Use this summary to align your resume positioning with the role.

Demonstrates expertise in modern frontend development with a focus on Angular 21+, React 18+, and TypeScript, while leading application modernization projects and implementing micro-frontend architectures. Proven ability to establish best practices and mentor junior engineers in a collaborative environment.

Highest-signal resume keywords

Angular 21+React 18+TypeScript 5+Micro-Frontend ArchitectureRxJS

ATS Keywords

Tailor your resume

Applicant Tracking System Keywords

Tip: use these terms in your resume and cover letter to boost ATS matches.

Hard Skills

Frontend DevelopmentJavaScript ES2022+SCSSCSS VariablesWebpackViteJasmineKarmaJestMemory Optimization

Soft Skills

MentoringCollaborationTechnical Guidance

Tools & Technologies

Angular CLIGitPnpm/YarnESLintPrettier

Certifications & Qualifications

Bachelor's Degree in Computer ScienceEngineering

Industry Keywords

Application ModernizationMicro-Frontend FrameworksState ManagementRole-Based Access Control (RBAC)CSRF/XSS Prevention

Tech Stack

Tools & technologies

AngularJavaScriptJestMobXReactReduxRxJSSCSSTypeScriptWebpackYarn

About the role

Key responsibilities & impact

Lead the migration strategy from legacy frameworks to modern Angular 21+ and React 18+
Design and implement micro-frontend architecture for multiple sub-applications
Build scalable, observable state management solutions using RxJS and MobX/Redux
Establish frontend best practices and architectural patterns for the engineering team
Collaborate with backend teams to define API contracts and integration patterns
Work with UX/UI teams to implement enterprise design systems
Partner with DevOps to optimize CI/CD pipelines and build performance
Mentor junior engineers through code reviews and technical guidance

Requirements

What you’ll need

Bachelor's degree in Computer Science, Engineering, or equivalent professional experience
5+ years of professional frontend development experience
3+ years of hands-on experience with Angular (v14+) / React and TypeScript
Proven track record of leading large-scale application modernization projects
Angular 14+, AngularJS 1.x, React 18
TypeScript 5+, JavaScript ES2022+
RxJS 7+, Observables, MobX/Redux
SCSS, CSS Variables, Design Systems
Webpack, Vite, Angular CLI
Jasmine, Karma, Jest
Git, pnpm/Yarn, ESLint, Prettier
Experience with legacy and modern framework coexistence
Proven ability to migrate legacy applications without service disruption
Hands-on experience with micro-frontend frameworks
Understanding of application isolation, state sharing, and routing coordination
Permission-based routing and role-based access control (RBAC)
HTTP interceptor chains for cross-cutting concerns
Multi-tenant architectures
CSRF/XSS prevention implementation
Bundle splitting and lazy loading strategies
Memory optimization for large-scale applications
Must be authorized to work in the U.S. without sponsorship

Benefits

Comp & perks

Medical insurance
Dental insurance
Vision insurance
Life insurance
Disability insurance
401(k)
11 paid holidays
Vacation time
Sick time
Comprehensive leave program
Equity program eligibility
Bonus eligibility reviewed at hire and annually at the Company's discretion
Supportive work environment
Competitive Total Rewards package