Compiler Developer
Join our Team
About this opportunity:
Are you interested in a new challenge and building yourself a career within Ericsson and at the same time getting a chance to excel in your personal career by getting exposure in a high-profile open-source project?
In BBI, we strive to make baseband development awesome. We do that by challenging the status quo, deploying our products continuously and focusing on our customers. We believe in highly empowered and self-organized teams. Work is performed in close cooperation with our internal Ericsson customers. Within BBI, we emphasize teamwork, communication, continuous improvement, and cooperation. We adhere to Ericsson core values, respect, professionalism, perseverance, and integrity.
What you will do:
Modern optimizing C compilers are very complex. Therefore, development of a competitive optimizing C compiler is slow and costly and requires many hundreds of developers to gain momentum. Today, the open-source alternatives GCC and Clang/LLVM are arguably the most competitive compilers on the market. Many tech companies such as Google, Apple, AMD, ARM, Intel, Qualcomm, and IBM have invested in LLVM and/or GCC.
Most of the compiler framework code can be shared between different target processors. However, the Ericsson proprietary digital signal processor (DSP) has many other features which make it special compared to mainstream processors and hard for a compiler to target. Within our Compiler team we develop our own fork of the LLVM C compiler with a custom backend that generates efficient code for Ericsson silicon with a fast build time. We merge from upstream daily, which means the code base changes often.
CFuzzer is our proprietary tool to randomly generate C programs with extensions specific for Ericsson DSP. The tool is written in Haskell with a focus on maintainability and extensibility. We aim to have a well-documented code base. CFuzzer is used for detecting crashes during compilation and finding miscompilation faults in the compiler (wrong code). Programs are generated using an approach similar to Haskell’s QuickCheck tool for property-based testing.
We plan to improve CFuzzer by adding support for new features, covering more types and statements, and improving the testing coverage of our compiler during the continuous testing process. The goal is to discover new bugs in our LLVM C compiler and improve its robustness.
The skills you bring:
We are searching for candidates with a background in Computer Science & Engineering or other similar programs.
• Advanced knowledge of the functional programming paradigm and Haskell is a must
• Knowledge of fuzz testing is a must
• Interest in LLVM compiler for C is a must
• Previous experience with C++ is an advantage but not required
• Excellent analytical capability and team-working skills are important merits
• Fluency in written and spoken English is required
The position is based in Kista, Stockholm.
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: Sweden (SE) || Stockholm
Req ID: 765192
