--- title: 'Senior Software Engineer and Team Lead (Java/.NET/Node.js) | Kaunas at WISE INTEGRATION' canonical: 'https://feeny.ai/job/senior-software-engineer-and-team-lead-java-net-node-js-kaunas-wise-integration-15zsz9t6x7g2' type: 'job' last_seen: '2026-09-12' --- # Senior Software Engineer and Team Lead (Java/.NET/Node.js) | Kaunas at WISE INTEGRATION - **Company:** WISE INTEGRATION - **Location:** Kaunas, Lithuania - **Work type:** hybrid - **Posted:** 2026-09-04 - **Last confirmed live:** 2026-09-12 - **Apply:** https://jobs.lever.co/wise-integration/98c92c82-efbf-4d7e-8349-48b11a1a573d ## Job description We create powerful, beautiful, and intuitive digital products. We don't blindly follow trends. We take our understanding of the latest technologies and build the best solutions for our enterprise clients. We’re big believers in collaboration across engineering, UX, and product teams. We combine our individual expertise to solve complex challenges. We seek team members who care about results and are not afraid of taking ownership. Senior Software Engineer and Team Lead is an important role within our organization that gives a person a wide range of responsibilities and opportunities to grow themself and others. As a senior software engineer, you will join a skilled team of engineers building a unique product. It would be a project with a mixed tech stack and microservice architecture. You will play a role in developing software using one of the backend technologies: Java, JavaScript, or .NET. You should also be skilled with one of the front-end frameworks like React or Angular – there is no strong requirement for a specific technology stack. An important part of responsibilities is leading and growing team members. This includes setting and following career path, goals, having regular one-on-one meetings, monitoring team health and motivation, participation in job interviews and company events. Key Responsibilities: - Team Leadership: - Leading and mentoring the engineering team, providing guidance and support to enhance their skills and performance. Contributing to the success of project delivery. - Hands-on engineering: - Participating in, leading, and scheduling agile ceremonies such as sprint planning, stand-up meetings, and retrospectives. - Collaborating with other team members to gather and understand requirements for new features and enhancements. - Developing and maintaining front-end web components. Building and consuming RESTful web services and APIs. - Writing unit tests and integration tests to ensure code quality and maintainability. - Participating in code reviews and providing feedback to other team members. - Troubleshooting and debugging issues. Continuously improving the software development process and practices. - Communicating with stakeholders and other team members to ensure project goals are met. Keeping up-to-date with the latest technologies and industry trends to improve the software and the development process. Job requirements: - Proven analytical ability, problem-solving, and risk management skills. - Ability to analyse/summarize information and provide insights (reports, recommendations, other forms). - Experience in managing engineering teams. - Strong leadership skills. - Mindset for knowledge sharing. - Fluent communication in English. - Deep experience and track record with one of the backend technologies, it may be Java, .NET, or Node.js. - Experience with one of the front-end frameworks (like React, Angular, or Vue). - Understanding and practical experience with the DevOps technology stack. - Understanding and practical use of cloud provider services (AWS, Azure, GCP, or similar). 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. ## 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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