Android wifi engineer

Job description

Company Overview

Sigma Connectivity is a design house. We are a team of 700 talented engineers and our main office is located in Lund, Southern Sweden. Primarily we run in-house projects focusing on connected products within consumer electronics and IoT devices and we have the capability in terms of people, expertise and labs to realize the most demanding products on the market. At Sigma Connectivity we help our customers realize their ideas into products. We turn these ideas into technical solutions and develop them; We design systems that are in the forefront of technology

We have offices in Sweden, US, Poland, Germany and Denmark. As a fast-growing company we are constantly looking for open-minded, talented people who want to take part in our journey. The Sigma Connectivity company culture is about sharing experiences and knowledge and with a Nordic work culture we strive for work-life balance and taking care of people. Within Sigma Connectivity you will never work alone.

Job Overview

Android based platforms have grown as choice to base products on, due to time efficiency in development.

We are seeking a WiFi engineer! The successful candidate will demonstrate deep knowledge of the Android Wifi stack, from application layer down to Kernel, using several different profiles and protocols. You will define API’s and collaborate with software engineers to specify architecture and performance targets.

You will analyze system performance, develop solutions for improvement, and achieve system performance targets. As a connectivity team member, you'll be responsible for designing, developing and optimizing WiFi networking software. You will be working across software stacks (Frameworks and API, UI, OS services, and drivers) to maintain and productize features collaboratively with the hardware and software teams.

You will work in all project phases and with all kinds of Android based products. And sometimes, with other embedded operating systems, such as Zephyr and FreeRTOS.

Role and Responsibility

• Develop software in the Android WiFi stack; analyze, design, program, integrate, unit test and debug.
• Work in teams with other software developers.
• Interface customers on engineering level
• Contribute in pre-studies and propose technical solutions
• Collaborate with specialists and developers from other technical areas like hardware, audio and optics
• Investigate and learn new product domains in context of need to design the correct solutions

Basic qualifications

• Minimum Bachelor’s in computer science or equal
• Excellent industry knowledge and theoretical understanding of IEEE 802.11 specifications (a/b/g/n/ac/ax (WiFi 6) protocol stack
• Strong knowledge in Rate vs. Range, Rate vs. Orientation tradeoff
• Knowledge of C, C++ and Android architecture
• Experience in validating WPA2/WPA3-PSK security protocols
• Good Knowledge in TCP/UDP, IP protocols and understanding of basic OSI model
• Strong knowledge on MIMO, SISO, MCS index, and general RF characteristics
• Experience with hands-on development and troubleshooting on embedded targets. e.g., GDB, wireless sniffers, packet tracing (tcpdump, wireshark)
• Kernel networking stack knowledge and understanding of operating system fundamentals

Preferred additional skills, personal traits, experience

Preferred Qualifications

• Experience in working with several different levels of the WiFi stack
• Experience in working with Bluetooth or at least willing to learn
• Experience in Java
• Android applications experience is a plus
• Experience in developing (big) systems of integrated functionality in software and hardware
• Experience in developing consumer and industrial products
• Development tools like Git, Gerrit, Jenkins, Coverity
• Creative debugging with multiple sources and techniques like debuggers, log analysis, signal analysis, and protocol sniffers

Personal characteristics

• Proactiveness in collaborating and execution.
• Willingness to learn new methods / tools / processes
• Strong problem solving and critical thinking skills
• Strong passion for creativity and solving cutting edge industry problems

We offer

• An international working environment
• Opportunity to develop cutting edge technology for market leaders and some of the most demanding customers
• Extensive hardware and software knowledge and all the equipment to build and test complete products and solutions
• Working on a project basis, promoting competence development
• At occasions, working on-site with the customer
• Being part of a wonderful and experienced team where you will never work alone.
• The Sigma Connectivity company culture, visit sigmaconnectivity.com.