Lediga jobb Infinera AB i Stockholm

In an increasingly connected world, the pandemic has highlighted just how essential telecom networks are to keeping society running. The Network Infrastructure group is at the heart of a revolution in connectivity, pushing boundaries to deliver more and faster network capacity to people worldwide through our ambition, innovation, and technical expertise.
Join the Optical Networks division, where innovation meets scale in the AI driven datacenter era. With the recent acquisition of Infinera, we’ve united two industry leaders to create an optical networking powerhouse - combining cutting-edge technology with proven leadership to redefine the future of connectivity. Infinera is now part of the Nokia Corporation and its subsidiaries. When you apply, the information you share will be handled with care and used only for recruitment purposes within the group.

As a Staff Software Development Engineer at Nokia, you will provide technical leadership in the design, architecture, and delivery of high?quality software for next?generation optical communication systems. You will work across multiple teams and disciplines—software, hardware, systems, and product management—to translate complex business and system requirements into robust, scalable software solutions. In our Agile environment, you will play a key role in driving technical direction, mentoring engineers, and ensuring engineering excellence across the optical networking domain.
Your responsibilities
Provide technical leadership and architectural guidance for the design and implementation of software solutions for optical networking products using C/C++, Python, and other relevant technologies.
Own and drive end?to?end technical solutions, from requirements analysis and high?level design through implementation, validation, and long?term maintenance.
Act as a key technical authority in backlog refinement, sprint planning, and feature design discussions, ensuring alignment with system architecture and long?term platform strategy.
Proactively utilize AI?assisted development tools to improve code quality, development efficiency, and engineering processes.
Define and promote software design standards, coding best practices, and documentation guidelines across development teams.
Lead the investigation and resolution of complex, cross?system issues, including performance bottlenecks, scalability challenges, and stability problems.
Influence and evolve CI/CD pipelines, build systems, and automation frameworks to support reliable and efficient software delivery at scale.
Advocate modern version control and collaboration practices (e.g., Git workflows, code reviews) across teams.
Mentor senior and junior engineers, fostering technical growth, design thinking, and knowledge sharing.
Stay current with optical communication technologies and industry trends, and apply this knowledge to guide architectural and technical decisions.
Your skills and experience
8+ years of hands?on experience in software development, with strong expertise in C/C++, Python, or comparable programming languages.
Proven experience leveraging AI?based tools to enhance software development, debugging, and design workflows.
Master’s degree in Computer Science, Engineering, or a related field (or equivalent practical experience).
Strong experience in Agile/Scrum environments, including influencing technical direction across multiple teams.
Demonstrated ability to drive architectural decisions, resolve complex technical problems, and balance short?term delivery with long?term sustainability.
Excellent communication and collaboration skills, enabling effective work across globally distributed teams.
Strong experience in embedded systems, memory constrained systems, RTOS as FreeRTOS and Zephyr, Linux based systems
It would be nice if you also had
Strong understanding of optical communication technologies and standards, such as CMIS, C?CMIS, OTN, and Ethernet.
Extensive experience with Git?based version control and large?scale collaborative development.
Hands?on knowledge of CI/CD systems, build tooling, and test automation in complex software environments.
Software architecture, system design, or Agile?related certifications.
About Us
Advancing connectivity to secure a brighter world.
Nokia is a global leader in connectivity for the AI era. With expertise across fixed, mobile and transport networks, powered by the innovation of Nokia Bell Labs, we’re advancing connectivity to secure a brighter world.
Learn more about life at Nokia.
(Infinera AB - is now part of Nokia)




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In an increasingly connected world, the pandemic has highlighted just how essential telecom networks are to keeping society running. The Network Infrastructure group is at the heart of a revolution to connectivity, pushing the boundaries to deliver more and faster network capacity to people worldwide through our ambition, innovation, and technical expertise?
Join Optical Networks division, where innovation meets scale in the AI-driven data center era. With the recent acquisition of Infinera, we’ve united two industry leaders to create an optical networking powerhouse—combining cutting-edge technology with proven leadership to redefine the future of connectivity.?
Infinera is now part of the Nokia Corporation and its subsidiaries. When you apply, the information you share will be handled with care and used only for recruitment purposes within the group. ?
?HOW YOU WILL CONTRIBUTE AND WHAT YOU WILL LEARN
Our Hardware team in Stockholm, Sweden, is looking for an Opto Engineer. This position will be on-site with focus on labwork.
As an Opto Engineer you may:
Participate as opto resource in different development projects.
Characterize optical performance on pluggable transceivers
Work with advanced optical technologies like xQAM, Coherent systems, ROADMs, EDFA.
Write with clarity detailed test plans, and test reports.
Work with pre-studies on new technologies or special use-cases.
Support your colleagues and share knowledge with them.
Work closely with cross functional product development teams in software, mechanical, and test software.
KEY SKILLS AND EXPERIENCE
M.Sc. or PhD. in Physics, Telecommunication, or similar, with a few years of industry experience.
Fundamental understanding of fiber optics for telecommunications. Component level and/or on system level.
Experience from work in HW/Opto laboratory with test instruments like BERT, OSA, High speed oscilloscopes.
Experience from test automation for lab application using Python, Matlab or similar
The candidate shall be flexible, innovative and driven.
The candidate shall be structured and thorough.
The candidate shall have good knowledge of English in speech and writing.


Öppen för alla
Vi fokuserar på din kompetens, inte dina övriga förutsättningar. Vi är öppna för att anpassa rollen eller arbetsplatsen efter dina behov. Visa mindre

In an increasingly connected world, the pandemic has highlighted just how essential telecom networks are to keeping society running. The Network Infrastructure group is at the heart of a revolution to connectivity, pushing the boundaries to deliver more and faster network capacity to people worldwide through our ambition, innovation, and technical expertise?
Join Optical Networks division, where innovation meets scale in the AI-driven data center era. With the recent acquisition of Infinera, we’ve united two industry leaders to create an optical networking powerhouse—combining cutting-edge technology with proven leadership to redefine the future of connectivity.?
Infinera is now part of the Nokia Corporation and its subsidiaries. When you apply, the information you share will be handled with care and used only for recruitment purposes within the group. ?
HOW YOU WILL CONTRIBUTE AND WHAT YOU WILL LEARN
Nokia develops leading DWDM transmission systems. Key components of the optical transport system are line interfaces – e.g. in transponder and muxponder units – providing mapping of client signals, signal supervision, traffic protection and similar functions with Tbit/s throughput.
The Hardware Architect develops and maintains the product architecture and detailed product features and requirements based on market requirements and industry feature requests for those transponders. Compliance to industry standards – among others, ITU-T G.709, ITU-T G.798 – is a key requirement.
The Architect coordinates and leads cross-functional concept and feature teams and provides technical & directional support to R&D, product management and customer teams.
Primary responsibilities are:
Develop innovative, competitive product architectures and concepts for packet-optical telecommunications products based on:
Understanding of business requirements, use cases and operational concepts,
Trade-off between cost, function, capacity and performance,
Up-to-date knowledge of industry trends in telecommunications networks, data center interconnect and related topics including industry standards knowledge (e.g. ITU-T, IEEE, IETF),
Hands-on experience in HW design for telecom products, including design for highest data rates (beyond 100Gbit/s),
and a good technical understanding of optical network equipment, such as transport and switching network elements for OTN, DWDM and Ethernet transport; optical interfaces for DWDM systems; OTN and SDH protection technologies and synchronization in telecommunication networks.



KEY SKILLS AND EXPERIENCE
The candidate requires a BSc/MSc/PhD degree and a minimum of 5 years working experience in HW development of telecommunication systems.
In-depth knowledge of relevant telecommunication standards, especially ITU-T G.709, Ethernet standards (IEEE 802.3), and related is required.
Experience in HW design and HW architecture of DWDM line interfaces or related telecommunications products.
Excellent communication and presentation skills and ability to work in a multi-disciplinary, multi-site and multi-national team environment.
Self-directed and highly motivated.



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Infinera develops leading DWDM transmission systems. Key components of the optical transport system are coherent line interfaces consisting of Digital Signal Processors and optical electrical conversion for best-in-class cost, data rate, reach and power consumption – e.g. in transponder and muxponder units – providing mapping of client signals, signal supervision, traffic protection and similar functions with Tbit/s throughput. Another key component in the transformation and development of the way optical networks are built are optical coherent pluggable modules.
The HW system architect for XR pluggable modules develops and maintains the product architecture and detailed product features and requirements based on market requirements and industry feature requests for those coherent modules.
HW Architect coordinates and leads cross-functional concepts preparing for smooth transition in the development organization and coordinates feature teams and provides technical & directional support to R&D, product management and customer teams.
Primary responsibilities and key success factors are:
Develop innovative, competitive product architectures and concepts for optical coherent pluggable modules:
Alignment of requirements and concepts and integration of Digital Signal Processor ASICs, Optics, FW & SW into best-in-class coherent interfaces
Understanding of business requirements, use cases and operational concepts,
Trade-off between cost, function, capacity and performance,
Up-to-date, deep technical understanding of coherent interfaces and their application, including hand-on HW development experience, thorough understanding of coherent modulation formats, and optical components used in coherent receivers and transmitters,
A good technical understanding of optical network equipment and optical network design in general,
The ability to lead a cross-functional team of experts to a successful implementation of coherent pluggable modules.

The tasks include:
Work in international, cross-functional product teams (product management, optical transmission experts, ASIC developers, integrated photonics technologists and component experts, HW, FW & SW developers) to facilitate & build consensus on innovative solutions meeting the product and customer requirements and schedule and cost constraints; break down product functions and requirements into functions and building blocks for the coherent pluggable modules.
Technical thought leadership and innovation capability.
Requirements:
The candidate requires a MSc/PhD degree in communications, electrical engineering or a related field and a minimum of 5+ years working experience in HW development of of coherent optical interfaces.
In-depth knowledge of relevant telecommunication standard, optical coherent transmission technology, network protocols, trends and emerging technologies with focus on coherent systems.
Experience with different CPU platforms and bus protocols like I2C, MDIO, SPI, PCIe, AMBRA (AXI)
Experience in leading HW design and HW architecture of coherent pluggable modules or related telecommunications products.
Excellent communication and presentation skills and ability to work in a multi-disciplinary, multi-site and multi-national team environment.
Self-directed and highly motivated.



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We are now searching for an Optical Engineer.
Our Hardware team in Stockholm, Sweden, is looking for an Opto Engineer. This position will be on-site with focus on labwork.
As an Opto Engineer you may:
Participate as opto resource in different development projects.
Characterize optical performance on pluggable transceivers
Work with advanced optical technologies like xQAM, Coherent systems, ROADMs, EDFA.
Write with clarity detailed test plans, and test reports.
Work with pre-studies on new technologies or special use-cases.
Support your colleagues and share knowledge with them.
Work closely with cross functional product development teams in software, mechanical, and test software.

Expected Experience and Qualifications:
M.Sc. or PhD. in Physics, Telecommunication, or similar, with a few years of industry experience.
Fundamental understanding of fiber optics for telecommunications. Component level and/or on system level.
Experience from work in HW/Opto laboratory with test instruments like BERT, OSA, High speed oscilloscopes.
Experience from test automation for lab application using Python, Matlab or similar
The candidate shall be flexible, innovative and driven.
The candidate shall be structured and thorough.
The candidate shall have good knowledge of English in speech and writing.

We offer:
Tight cooperation with other disciplines and an agile organization
Short product development cycles, you will see how your work affects our products and sales
International possibilities of development and internal advancement
Social and wellness activities and clubs
A friendly and helpful atmosphere
Highly competent and motivated colleagues
A workplace in beautiful Marievik by the water in Årstaviken with a great supply of lunch restaurants and good communications



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Infinera is the global supplier of innovative networking solutions. Our customers include the leading service providers, data center operators, internet content providers (ICPs), cable operators, enterprises, and government agencies worldwide, including 9 of the top 10 Tier 1 service providers and 6 of the top 7 ICPs. We design, develop and deliver hardware and software for fiber-based connectivity solutions that span access, aggregation, metro, long haul, and submarine network. Our industry-leading, trendsetting edge-to-core solutions provide the foundation for many of the world’s largest and most demanding networks that generate billions in service revenue for our customers.
Your Key Responsibilities Would Include:
Implementing embedded control firmware for high-reliability fiber optics and optoelectronic modules/sub-system controllers under the guidance of senior engineers.
Interface with various testing groups for test case development. This includes FW DVT, optical test, system software test and manufacturing tests.
Work with hardware and optical groups to trouble-shoot FW issues on ZYNQ platforms.

Education & Experience Necessary For Success:
B.S./MS/Ph.D degree in Electrical Engineering or Computer Science with 0-2 yrs of experience.
Hands-on experiences with C/C++ and Python programming languages
Good understanding of Real-Time Operating System
Good understanding of fundamentals of digital and analog circuit design
Excellent written and oral communication skills
Highly self-driven and willing to learn new skills

Infinera is an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to race, sex, color, religion, sexual orientation, gender identity, national origin, disability status, protected veteran status, or any other characteristic protected by law. Infinera complies with all applicable state and local laws governing nondiscrimination in employment.




Öppen för alla
Vi fokuserar på din kompetens, inte dina övriga förutsättningar. Vi är öppna för att anpassa rollen eller arbetsplatsen efter dina behov. Visa mindre

Are you ready to join a great workplace and a great team with the possibility to work both in office and from distance?
We value diversity and equality and believe that our individual differences are our strengths. We have respect for each other, and we trust that everyone performs their best.
We are looking for a Software Quality Assurance engineer to be part of our Embedded Software team and who is ready to take on a new challenge.
As an Experienced Software QA Engineer within our Embedded Software team, you will be responsible for ensuring the quality of your team’s products and features before release to end users. You develop automated test cases in the existing Pytest framework, and you also help identify improvements to the framework to ensure it is maintained and invested in properly. You have the ability to understand and map product requirements, system requirements and industry standards to be able to produce a complete test plan. You recognize industry buzzwords such as WDM, coherent multiplexing, ITU-T, IEEE, SDN, TCP/IP, Ethernet and/or OTN.
Knowledge/Skills/Abilities:
Master’s degree in Computer Science, Software Engineering, IT or equivalent education
More than 2 years’ experience in quality assurance and test automation of telecom products
Experience from Python test automation and manual testing in a lab environment
Developing test plans
Highly motivated team player
Experience working in an Agile development environment

Extra Skills:
Networking and protocols experience
Experience with use of test equipment from e.g. IXIA, Spirent, Viavi, Anritsu etc.
ISTQB certification

Infinera Offers:
An environment with a friendly and helpful atmosphere where people value trust and encourage one another.
Participation in dynamic, complex and technology driven projects in a multicultural, international R&D organization
Hybrid work model; work in office - work from distance.
Tight cooperation with other disciplines and an agile organization
Possibilities to explore new technologies
Short product development cycles, you will see how your work affects our products and sales
End to end development inhouse; Product Management, System Architecture, HW, SW, Services
International possibilities of development and internal advancement
Social events, pleasant office space in Marievik, Stockholm

#LI-GA1
#LI-Hybrid
Infinera is an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to race, sex, color, religion, sexual orientation, gender identity, national origin, disability status, protected veteran status, or any other characteristic protected by law. Infinera complies with all applicable state and local laws governing nondiscrimination in employment.




Öppen för alla
Vi fokuserar på din kompetens, inte dina övriga förutsättningar. Vi är öppna för att anpassa rollen eller arbetsplatsen efter dina behov. Visa mindre

Are you ready to join a great workplace and a great team with the possibility to work both in office and from distance?
We value diversity and equality and believe that our individual differences are our strengths. We have respect for each other, and we trust that everyone performs their best.
We are looking for a Software Quality Assurance engineer to be part of our Embedded Software team and who is ready to take on a new challenge.
As an Experienced Software QA Engineer within our Embedded Software team, you will be responsible for ensuring the quality of your team’s products and features before release to end users. You develop automated test cases in the existing Pytest framework, and you also help identify improvements to the framework to ensure it is maintained and invested in properly. You have the ability to understand and map product requirements, system requirements and industry standards to be able to produce a complete test plan. You recognize industry buzzwords such as WDM, coherent multiplexing, ITU-T, IEEE, SDN, TCP/IP, Ethernet and/or OTN.
Knowledge/Skills/Abilities:
Master’s degree in Computer Science, Software Engineering, IT or equivalent education
More than 2 years’ experience in quality assurance and test automation of telecom products
Experience from Python test automation and manual testing in a lab environment
Developing test plans
Highly motivated team player
Experience working in an Agile development environment

Extra Skills:
Networking and protocols experience
Experience with use of test equipment from e.g. IXIA, Spirent, Viavi, Anritsu etc.
ISTQB certification

Infinera Offers:
An environment with a friendly and helpful atmosphere where people value trust and encourage one another.
Participation in dynamic, complex and technology driven projects in a multicultural, international R&D organization
Hybrid work model; work in office - work from distance.
Tight cooperation with other disciplines and an agile organization
Possibilities to explore new technologies
Short product development cycles, you will see how your work affects our products and sales
End to end development inhouse; Product Management, System Architecture, HW, SW, Services
International possibilities of development and internal advancement
Social events, pleasant office space in Marievik, Stockholm

#LI-GA1
#LI-Hybrid
Infinera is an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to race, sex, color, religion, sexual orientation, gender identity, national origin, disability status, protected veteran status, or any other characteristic protected by law. Infinera complies with all applicable state and local laws governing nondiscrimination in employment.




Öppen för alla
Vi fokuserar på din kompetens, inte dina övriga förutsättningar. Vi är öppna för att anpassa rollen eller arbetsplatsen efter dina behov. Visa mindre