Senior Frontend Security Engineer – React/Next.js

Our requirements

• At least 7 years of experience in frontend development, with deep expertise in React, Angular, or Vue.
• Proven track record of mitigating security vulnerabilities at the code level, especially XSS, CSRF, and supply-chain attacks.
• Strong proficiency in TypeScript, unit/e2e testing (e.g., Cypress, Playwright), and CI/CD processes.
• Experience connecting frontend systems to GCP microservices with type-safe API contracts (REST, GraphQL, gRPC).
• Demonstrated leadership in guiding engineering teams and influencing technology direction.
• Broad technical skill set with the ability to apply the right tools for complex problems.
• Passion for building better, faster, and safer solutions that make a real difference.

Optional

• Experience architecting solutions that identify and solve operational problems or opportunities.
• Respected reputation for quality development and impactful contributions.
• Holistic problem-solving mindset with a focus on long-term impact.

Your responsibilities

• Develop and deliver high-quality, production-ready code with a focus on React Server Components (RSC), Server Actions, and Partial Pre-rendering (PPR).
• Architect and implement 'Security at the Edge' layers within Next.js to protect user interactions and enhance security posture.
• Build and maintain Content Security Policies (CSP), secure cookie management, and robust authentication flows using OAuth2/OpenID Connect.
• Prevent frontend vulnerabilities such as XSS, CSRF, and clickjacking through architectural best practices.
• Connect frontend architectures to GCP-based microservices via type-safe API contracts utilizing REST, GraphQL, or gRPC.
• Mentor teams on security best practices and foster a culture of quality, efficiency, and continuous improvement.
• Lead efforts to automate security checks and optimize developer workflows for agility and security.
• Stay up-to-date with evolving frontend and security trends, sharing insights and guiding teams toward innovative solutions.

About the project

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• Language required for the role: Fluent English, both written and spoken.
• Eligibility to work on this role: Only candidates with an existing legal right to work in the European Union will be considered for this role.
• Interested? Apply now and include your CV (preferably in English) along with a statement confirming your consent to the processing and storage of your personal data.

What we offer

• Stable and long-term cooperation with very good conditions
• Enhance your skills and develop your expertise in the financial industry
• Work on the most strategic projects available in the market
• Define your career roadmap and develop yourself in the best and fastest possible way by delivering strategic projects for different clients of ITDS over several years
• Participate in Social Events, training, and work in an international environment
• Access to attractive Medical Package
• Access to Multisport Program
• Access to Pluralsight
• Flexible hours

Benefits

• sharing the costs of sports activities
• private medical care
• flexible working time
• fruits
• integration events
• corporate gym
• saving & investment scheme
• no dress code
• coffee / tea
• drinks
• christmas gifts
• birthday celebration
• sharing the costs of a streaming platform subscription
• access to +100 projects
• access to Pluralsight

Recruitment stages

• 1.
  online interview
• 2.
  online interview

ITDS Polska Sp. z o.o.