Frontend Engineer | Mid-Senior | React | Trendos
Posted 9 days ago
We are building a world-class, AI-driven B2B analytics SaaS. Built from scratch as a core product, it defines a new generation of marketing analytics within Tesonet Group.
You’ll join while core architecture, data flows, and engineering principles are actively being designed, with the opportunity to take real ownership and shape how the product is built and how teams collaborate.
The platform is built around intelligent automation, real-time data processing, ML modeling, and large-scale distributed systems, with AI deeply embedded at its core. By working with complex data, we deliver a powerful self-service analytics experience that enables faster, smarter marketing decisions.
Main Responsibilities
Build a framework to support blazing-fast web pages - think sub-second loading times
Ensure the codebase is clean and use best practices for your code while the project grows
Seek to improve web performance constantly
Drive the full lifecycle of new frontend features, from development through code reviews, QA testing, and production deployment
Mentor colleagues on web development best practices & provide technical guidance.
Core Requirements
Proven development experience working with JavaScript and TypeScript
Experience with the React framework
Deep knowledge of web development, testing, and performance optimization best practices
Proven experience in developing high-quality and high-performance front-end web applications that run at scale
Team-spirited, proactive, and able to work in a fast-paced environment
Fluent in English and Lithuanian, both written and verbal.
Tools You’ll Use
TypeScript
React
Docker
State management systems
Modern bundlers and transpilers.
Salary Range
Gross salary 4500 - 7000 Eur per month.
We are open to discussing a different salary based on your skills, experience, and potential impact.
What We Offer
Professional growth. Internal and external events, online training, conferences, books - everything you need to reach full potential.
Health benefits. Private health insurance, online and on-site workouts, consultations to feel and be your best.
Team spirit. Team buildings and parties with games, shows, tastings, food coupons, gifts, and it’s on us.
More free time. Stay with us and additional vacation days will be added to your calendar.
Additional paid leave. Additional days are covered by us in cases of illness or special occasions.
Flexibility. Flexible working time arrangement.
Other open roles at Tesonet Global(6)
We are one of the largest and fastest-growing venture builders and investors in the Baltic States. Our portfolio includes globally recognized companies such as joint cybersecurity powerhouse, and Lithuania’s 2nd ever unicorn, Nord Security and Surfshark, a market-leading web intelligence collection platform Oxylabs, the fastest-growing brand among hosting providers Hostinger, our newest addition nexos.ai - an AI orchestration platform, and others. Having a solid track record from cybersecurity to AI, our interests go beyond any single industry, field, or market. We leverage this broad expertise and decades of experience to empower ventures to build and scale globally. Have a working product, startup, or MVP? Apply and let’s scale it together.
Key team members
Toma Sabaliauskienė
Akvile Stunzenaite
Emanuelis Norbutas
Karolis Kybartas
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