Company Overview
Our client is a leading, fully regulated US-based digital asset trading platform. They provide secure, low-latency access to cryptocurrency markets, acting as a bridge between traditional finance and the Web3 ecosystem.
About This Role
The Senior Software Engineer, Web is part of the Engineering team and reports to our Manager, Engineering. As a Senior Software Engineer, Web, you will be responsible for designing and building scalable, high-performance web applications using Next.js and modern front-end technologies.
You will partner with Product, Design, Backend, and DevOps teams to deliver performant, accessible, and secure user experiences while contributing to front-end architecture and engineering best practices.
Working hours 12:00 - 20:00 CET.
Key Responsibilities
- Design and implement scalable front-end features using Next.js, React, and TypeScript.
- Own end-to-end development of web features, including testing, deployment, and maintenance.
- Build modular and reusable UI components to support scalable development.
- Optimize web performance through SSR/SSG, lazy loading, and responsive design techniques.
- Monitor and improve performance metrics such as page load time, TTI, and Core Web Vitals.
- Collaborate cross-functionally with Product, Design, Backend, and DevOps teams to define requirements and deliver features.
- Contribute to front-end architecture decisions and engineering best practices.
- Participate in code reviews and mentor junior engineers to improve code quality and team standards.
- Partner with DevOps to support CI/CD pipelines and reliable deployment processes.
- Ensure high standards in code quality, accessibility, security, and automated testing (unit, integration, E2E).
Required Qualifications
- Bachelor’s or Master’s degree in Computer Science or related field.
- ~8 years of professional software engineering experience, or ~6 with an advanced degree.
- Strong communication and collaboration skills, motivation, problem solving mind set.
- Strong proficiency in Next.js, React, TypeScript, JavaScript, HTML5, and CSS3.
- Strong experience with GraphQL and REST API.
- Experience with performance optimization tools (Lighthouse, WebPageTest, Chrome DevTools).
- Solid understanding of SSR/SSG, CDN strategies, caching, and responsive design principles.
- Familiarity with front-end security best practices.
- Experience with Git, CI/CD pipelines, and modern deployment workflows.
- Exposure to cloud platforms such as AWS or GCP.
- Strong collaboration skills working with Product, Design, and Backend teams.
- Experience mentoring junior engineers and contributing to team development.
- Bonus: Experience with analytics instrumentation or blockchain-integrated front-ends (e.g.,ethers.js, wallet integrations).
We offer*:
- Flexible working format - remote, office-based or flexible
- A competitive salary and good compensation package
- Personalized career growth
- Professional development tools (mentorship program, tech talks and trainings, centers of excellence, and more)
- Active tech communities with regular knowledge sharing
- Education reimbursement
- Memorable anniversary presents
- Corporate events and team buildings
- Other location-specific benefits
*not applicable for freelancers
What We Do
N-iX is a global software solutions and engineering services company that helps world’s leading organizations turn challenges into lasting business value, operational efficiency, and revenue growth using advanced technology. Whether you need to build a custom solution, modernize your digital product or acquire extra tech expertise - we have the experience and capabilities to ensure your success. With over 2,000 professionals in 25 countries across Europe and the Americas, N-iX offers expert solutions in cloud, data analytics, embedded software, IoT, AI, machine learning, and other tech domains. Being in business for over two decades, we have worked with dozens of industry-leading enterprises and Fortune 500 companies creating value across a wide variety of sectors, including finance, manufacturing, supply chain, retail, e-commerce, healthcare, and more. Our unique combination of business domain expertise and technical know-how enables us to effectively collaborate with ISVs, tech companies, and enterprises of all sizes. Thanks to the strong tech ecosystem and partnerships with AWS, GCP, Microsoft, SAP, OpenText, Snowflake, and others, we bring extra speed, scale and efficiency to more than 160 organizations across the globe. N-iX is recognized by numerous industry awards, such as CRN Solution Provider 500, Global Outsourcing 100 by IAOP, ISG Provider Lens™, Modern Application Development services providers by Forrester, etc
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