--- title: 'Full Stack Engineer (Node/React) | Kaunas at WISE INTEGRATION' canonical: 'https://feeny.ai/job/full-stack-engineer-node-react-kaunas-wise-integration-kaunas-jx5rh25h1weq' type: 'job' last_seen: '2026-09-12' --- # Full Stack Engineer (Node/React) | Kaunas at WISE INTEGRATION - **Company:** WISE INTEGRATION - **Location:** Kaunas, Lithuania - **Work type:** hybrid - **Posted:** 2026-08-20 - **Last confirmed live:** 2026-09-12 - **Apply:** https://jobs.lever.co/wise-integration/7efb3920-86a2-45db-b52c-8d4eeb09eb00 ## Job description A Full Stack Software Engineer will contribute to the development and maintenance of web applications using Node.js, TypeScript, React, and related technologies. The role includes implementing front-end and back-end features, writing clean and maintainable code, participating in testing and debugging activities, and supporting application improvements under the guidance of senior engineers or technical leads. The engineer will work with technologies such as Node.js, TypeScript, React, Next.js, HTML, CSS, REST APIs, and messaging-based integrations where applicable. Practical experience with Node.js and TypeScript is required for this role. Familiarity with NestJS and architectural concepts such as DDD, CQRS, and Clean Architecture is beneficial, but expert-level ownership of these areas is not expected. The engineer will collaborate with developers, testers, product owners, and stakeholders to deliver reliable software features as part of an Agile team. Key Responsibilities: - Participate in Agile ceremonies such as sprint planning, daily stand-ups, refinements, and retrospectives. - Work with senior engineers, technical leads, product owners, and team members to clarify requirements and implementation details. - Develop and maintain front-end components using React, Next.js, TypeScript, HTML, and CSS. - Develop and maintain back-end services using Node.js, TypeScript, and NestJS where applicable. - Build, integrate, and consume REST APIs and messaging-based services. - Write unit tests and support integration testing to improve code quality and maintainability. - Participate in code reviews and apply feedback to improve code quality. - Troubleshoot, debug, and resolve application issues with support from the team when needed. - Follow agreed coding standards, development practices, and delivery processes. - Contribute to technical discussions and suggest improvements within the scope of assigned work. - Keep up to date with relevant technologies and apply learning to day-to-day development tasks. Requirements: - Proven working experience with: Node.js, TypeScript, JavaScript ES6+, React, HTML, CSS, REST APIs, Git, unit testing, Agile development practices. - Nice to have: Next.js, NestJS, message brokers, CI/CD pipelines such as GitHub Actions, cloud platform exposure such as Azure, AWS, or GCP, basic understanding of DDD, CQRS, and Clean Architecture. What we offer: - Opportunity to be part of a global organization. - Encouraging working atmosphere, engaging activities, and extra benefits (e.g., additional medical insurance (covers gym subscription), team events, outreach activities, and others). - Hybrid work model with remote work opportunities ( 3/5 days weekly from the office). - Open, modern, and ergonomic work environment when working from the office with the multicultural community. - Opportunity to grow professionally and personally (e.g., Udemy) and continuously develop within the domain. The salary range for this position is from **3.374 to 4.459 EURO gross before taxes.**** The salary offer for the candidate is determined based on the predefined salary ranges for the position and depends on the level of competence and experience of the candidate. ## About WISE INTEGRATION ## Company Overview - **One-liner**: Wise Integration is a fabless semiconductor company that develops gallium nitride (GaN) power ICs and digital control firmware to make power converters dramatically smaller, lighter, and more energy-efficient. - **Entity Type**: Private (Series B, raised $16.2M total) - **Headquarters**: Hyères, France (with offices in Grenoble, France; Ottawa, Canada; and Taipei, Taiwan) - **Founded**: 2020 (spinoff from CEA-Leti) - **Founders**: Ghislain Kaiser (CEO), Thierry Bouchet (CTO), Rym Benaboud Hamoumou (Chief Corporate Marketing & Strategic Communication) ## Core Business - **Primary industries**: Power electronics, semiconductors, GaN (gallium nitride) integrated circuits. - **Target customers**: B2B – manufacturers of consumer electronics chargers, data center power supplies, industrial equipment, light e-mobility, and automotive systems. - **Mission**: To push the boundaries of power conversion through GaN technology and advanced digital control, contributing to more efficient and sustainable power electronics. ## Products & Services - **WiseGan® Power ICs**: Gallium nitride integrated circuits that enable high-frequency, high-efficiency power conversion in a compact footprint. - **WiseWare® Digital Control Firmware**: Software-defined digital control that optimizes the performance of WiseGan ICs, enabling smaller size, better efficiency, and higher reliability. - **Co-packaged GaN Digital Controller** (in development): A next-generation solution combining GaN power stage and digital control in a single package, targeting AI data center infrastructure and other high-density applications. ## Market Standing - **Valuation / Market Cap**: Not publicly disclosed. - **Key Metric**: Total funding of **$16.2M** (Series B closed February 2024, led by imec.xpand). - **Notable Investors / Partners**: imec.xpand (lead investor), KEC, Powernet (partnership for AI data center power architecture). Additional investors from earlier rounds (Corporate Round, Non Equity Assistance, Venture Round). - **Growth Signals**: - Headcount of 32–40 employees, growing **+32.3% YoY**. - 6th anniversary celebrated in February 2026. - Strong IP portfolio and strategic partnerships with Korean companies KEC and Powernet for AI data center applications. - Recent news (June 2025) about co-packaged GaN digital controller plans. ## Competitive Advantages - **Integrated GaN + Digital Control**: WiseGan and WiseWare are designed to work together, offering a holistic solution that competitors often deliver as separate components. - **High-Frequency Architecture**: Enables dramatic miniaturization and efficiency improvements in power supplies. - **Proven Team**: Leadership with deep experience in deeptech (CEO co-founded Docea Power, acquired by Intel; CTO from CEA-Leti). - **Strong IP Foundation**: Spun out from CEA-Leti, a world-class semiconductor research institute, with a growing patent portfolio. ## Strategic Focus - **AI Data Center Infrastructure**: Partnering with KEC and Powernet to bring software-defined GaN power to high-density AI servers. - **Product Expansion**: Developing co-packaged GaN digital controllers to simplify customer designs and increase performance. - **Global Scale-up**: Expanding engineering and sales presence across Europe, North America, and Asia (Taiwan, South Korea, Hong Kong). ## Why Work Here - **Culture**: Emphasizes innovation, respect, diversity, and service. Described as “stimulating, supportive, collaborative, and inclusive” with a global team encouraged to contribute. - **Work Policy**: Hybrid workspace (employees combine remote and on-site work). Typical on-site presence expected. - **Team & Growth**: Fast-growing deeptech startup with a small, cross-functional team (30–40 people) across three continents. Opportunity to have high impact. - **Locations**: Offices in Hyères and Grenoble (France), Ottawa (Canada), and Taipei (Taiwan). International exposure. - **Tech Stack**: Work with C, Python, LabVIEW, MATLAB, Altium, Linux, and signal processing tools. ## Sources 1. [wise-integration.com](https://wise-integration.com/careers/) – Careers page 2. [wise-integration.com](https://wise-integration.com/about-us/) – About Us page 3. [linkedin.com](https://linkedin.com/company/wiseintegration) – LinkedIn company page (via web search summary) 4. [wise-integration.com](https://wise-integration.com/meet-our-team/) – Meet Our Team page 5. 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