About this opportunity
Ericsson seeks a researcher with a solid academic background (PhD or equivalent) and possible some years' hands-on experience in optical systems and photonic technologies to conduct high-impact research applying these technologies to transport networks and radio systems. The successful candidate will lead and contribute to research projects-often in collaboration with technology partners, universities, and other Ericsson teams-driving innovation, solving complex technical challenges, and helping to translate advanced photonics concepts into practical network and radio solutions.
What you will do
• Investigate, design and evaluate optical solutions for applications in transport networks and radio systems.
• Develop models, prototypes, and experiments to validate concepts and quantify performance.
• Collaborate with internal teams, industry partners, and academic groups to accelerate innovation and transfer results to product development.
• Produce patents and publish results, when in line with the research strategy, in journals and conferences, and represent Ericsson in relevant forums and consortia.
• Make innovation in collaboration with key stakeholders and push for technology transfer towards radio products and transport networks.
• Work with real-world constraints - performance, scalability, robustness, and energy efficiency
• You will be trusted with meaningful responsibility from day one and supported by senior researchers who are leaders in their fields.
The skills you bring
• PhD (or equivalent) in one or more of the following: photonics, optical engineering, physics, electrical engineering, or a closely related field.
• Some years of experience in optical transmission systems and technologies, optical networking, integrated photonics, or related areas applied to communications networks.
• Good communication and collaborative skills
• Professional proficiency in Japanese
• It would be beneficial to have some experience in PoC, demos or prototyping.
• At least basic knowledge of AI technologies.
What Sets You Apart
• A strong research mindset and the ability to generate novel ideas
• Motivation to publish, patent, and influence future standards
• High level of ownership, analytical thinking, and problem-solving ability
• Willingness to continuously learn and work across adjacent domains
Why Ericsson Research
• Work on long term, high impact research with global reach
• Access to real network data and industrial scale problems
• Influence on international standards and future technologies
• Collaborate with world-class researchers across disciplines
• A supportive, inclusive culture that values creativity and technical excellence
• Strong benefits and clear growth paths
Why join Ericsson?At Ericsson, you'll have an outstanding opportunity. The chance to use your skills and imagination to push the boundaries of what's possible. To build solutions never seen before to some of the world's toughest problems. You'll be challenged, but you won't be alone. You'll be joining a team of diverse innovators, all driven to go beyond the status quo to craft what comes next.
What happens once you apply? Click Here to find all you need to know about what our typical hiring process looks like.Encouraging a diverse and inclusive organization is core to our values at Ericsson, that's why we champion it in everything we do. We truly believe that by collaborating with people with different experiences we drive innovation, which is essential for our future growth. We encourage people from all backgrounds to apply and realize their full potential as part of our Ericsson team. Ericsson is proud to be an Equal Opportunity Employer. learn more.
Primary country and city: Japan (JP) || Yokohama
Req ID: 783933
Skills Required
- PhD in photonics, optical engineering, physics, electrical engineering, or related field
- Experience in optical transmission systems and technologies or related areas
- Good communication and collaborative skills
- Professional proficiency in Japanese
- Basic knowledge of AI technologies
- Experience in PoC, demos or prototyping
What the Team is Saying
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Ericsson Compensation & Benefits Highlights
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Healthcare Strength — Comprehensive medical, dental, vision, and mental‑health options are positioned as core benefits with multiple plan choices in key markets. Official materials explicitly emphasize healthcare breadth as part of “Life at Ericsson.”
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Retirement Support — 401(k) with employer matching in the U.S., pensions in some regions, and broad access to an ESPP indicate strong long‑term financial support. Company filings and AGM materials describe share programs and post‑employment benefits as ongoing pillars of the package.
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Leave & Time Off Breadth — Paid time off, sick leave, holidays, and paid volunteer time are highlighted alongside generous parental leave in various locations. Time‑off entitlements are presented as a strong component of the total rewards offering.
Ericsson Insights
What We Do
Ericsson builds the digital connectivity the world relies on. Our technology underpins the mobile networks, platforms, and systems that billions of people, businesses, and societies depend on every day. We are a global leader in communications technology, delivering mobile network infrastructure, cloud software, and wireless connectivity solutions for service providers and enterprises worldwide. Our networks support connectivity across 180+ countries, helping power everyday communication as well as critical digital services at global scale. Connectivity has evolved far beyond consumer mobile use. Today, nearly 80% of the world’s population accesses the internet via mobile networks, and Ericsson is helping shape what comes next. We are advancing 5G and 5G Advanced, developing network APIs that open connectivity to the global developer ecosystem, and applying automation and AI to make networks more intelligent, efficient, and resilient. Ericsson was the first company to launch live 5G networks on five continents, and our 5G platform is now commercially live in 150+ networks across 60+ countries. We also support more than 36,000 enterprise customers, enabling secure, high-performance connectivity for industries such as manufacturing, aviation, logistics, utilities, and public safety, where reliability and performance are mission critical. Innovation is central to how we work. Ericsson has approximately 28,000 employees in research and development, backed by one of the strongest intellectual property portfolios in the industry with 60,000+ granted patents. Our engineers, researchers, and technologists work across 100+ global R&D sites, helping define how networks evolve and how digital infrastructure is built for the long term. As the world moves toward a mobile-first, AI-powered, and cloud-driven future, connectivity becomes the foundation for digital transformation across every industry. Ericsson is building that foundation, shaping the future of digital connectivity through technology that operates at global scale and supports real-world impact, today and for what comes next.
Why Work With Us
Ericsson is a place for people who want to work on technology that powers everyday life. You’ll contribute to large-scale systems used every day, tackle complex challenges in live environments, and keep developing your skills and career in your own vision.
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