Architect and build scalable front-end solutions using React and TypeScript. Own engineering standards and lead feature delivery from concept to production. Must have 5+ years experience and fluent English.
Key Highlights
Key Responsibilities
Technical Skills Required
Benefits & Perks
Nice to Have
Job Description
About the Role
Are you a senior front-end pioneer who thrives on turning complex product visions into high-performance user experiences? We are looking for a Senior Front-End Engineer to own, architect, and elevate our client's front-end ecosystem using React and TypeScript. If you are a proactive problem-solver ready to drive development standards and lead high-impact features from concept to production, this is your next big career move.
About the Client
Our partner is a dynamic tech powerhouse building cutting-edge product engineering solutions across Fintech, iGaming, and Marketing. They turn innovative ideas into high-performing engines and launch them at scale. As their exclusive recruitment partner, Lionhires manages their full-cycle talent acquisition, ensuring a seamless and candidate-first hiring experience.
❗️Important: This is an on-site position based in Valencia. Remote or hybrid work is not available. Candidates must either already be in Valencia or be willing to relocate. Full relocation support will be provided if necessary.❗️
What You Will Do
- Architect and Build: Design and implement scalable, maintainable front-end architecture using JavaScript, TypeScript, and React.js.
- Drive Engineering Standards: Own and elevate front-end development processes, best practices, and code quality.
- Collaborate Cross-Functionally: Work closely with Product, Design, and Back-End teams to translate complex business requirements into elegant technical solutions.
- Lead Feature Delivery: Spearhead end-to-end feature development from initial concept through to deployment and production.
- Optimize Performance: Ensure the highest levels of application responsiveness, speed, and optimization.
- Influence Technical Roadmap: Participate actively in architectural decisions, technical planning, and future-proofing the codebase.
- Communicate Internationally: Maintain clear technical documentation and interface effectively with external stakeholders in English when required.
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What You Bring
Minimum Qualifications
- 5+ years of experience in dedicated Front-End development.
- Deep technical expertise in JavaScript (ES6+), TypeScript, and React.js.
- Proven leadership: A track record of owning, scaling, and improving engineering processes.
- Startup agility: Experience working in fast-paced startup environments with a strong ability to work independently.
- Architectural mindset: Strong structural thinking coupled with an open-minded, proactive, and solution-oriented approach.
- Language proficiency: Fluent written and spoken English for seamless documentation and external communication.
Preferred (Nice to Have)
- Experience working on large-scale, enterprise-level projects.
- Hands-on experience designing complex CRM or SaaS systems.
- Deep knowledge of modern state management libraries (e.g., Redux, Zustand).
- Experience with advanced performance optimization and building scalable UI systems.
- A strong grasp of UX principles and a product-focused mindset.
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What's in It for You
- Competitive Compensation: Top-tier salary with annual performance and remuneration reviews.
- Relocation Support: A smooth transition with a full relocation package (flight tickets + 2-week hotel stay).
- Compliance & Security: Official employment following Spain/EU laws, including registration support for family members.
- Growth & Learning: Abundant L&D opportunities, challenging tasks, language development support, and partial class compensation.
- Work-Life Balance: 23 working days of annual vacation to ensure you stay rested and refreshed.
- Vibrant Culture: Team building activities, birthday gifts, and a Social Club hosting over 50 events per year (coming soon).
Our Recruitment Process
We respect your time and aim for a transparent, efficient hiring journey:
- Introductory Recruiter Call: A casual conversation to align expectations and discuss your background.
- Technical Interview: A deep dive into your architectural approach, technical expertise, and real-world problem-solving skills.
- Final Team Interview: A culture and collaboration alignment session with the hiring team and leadership.
- The Offer: If it's a mutual match, we will extend a formal offer to welcome you aboard!
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