DFT Engineer

Raspberry Pi Foundation; Cambridge; On-site; GBP 85,000 - 110,000; Full time

Benefits offered by this job

Employer pension 8% (employee 4%)

Life assurance 4x base salary

Income protection 75% after 13 weeks

Private medical insurance

EV salary sacrifice scheme

Job summary

Raspberry Pi Foundation is seeking a DFT Engineer to join our ASIC team in Cambridge. You will create, implement, and verify DFT solutions across full silicon flow, from specification through design and verification to production.

You will balance test coverage, cost, and time to market, while supporting implementation and sign-off and mentoring colleagues. The role requires hands-on experience with Tessent DFT tool flow, ATPG/MBIST, and IJTAG, plus strong scripting and IP test skills.

Qualifications

• Define a DFT strategy at chip, subsystem, and IP level with pragmatic trade-offs.
• Experience with Tessent DFT tool flow for MBIST, EDT, SSN, IJTAG, and IP test using ICL/PDL.
• Verify DFT structures and debug related issues.
• Support DFT through implementation and sign-off, including timing constraints and debugging power issues.
• Mentor teammates and share knowledge.

Responsibilities

• Create, implement, and verify DFT solutions for future ASIC designs.
• Balance test coverage, cost, and time to market.
• Collaborate with chip teams to resolve DFT timing and power issues.
• Mentor team members and share activities with the wider team.

Skills

DFT strategy

Tessent DFT

MBIST

EDT

SSN

IJTAG/IEEE1687

ICL/PDL

DFT verification

Timing constraints

Power debugging

Scripting (TCL)

On-chip clocking

ATPG

Education

Electronic engineering

Tools

UPF

Tessent tools

Job description

Raspberry Pi is seeking a DFT engineer to join our expanding ASIC team to help deliver our next-generation products. We have been building our own silicon at Raspberry Pi for some years now, starting with the RP2040 microcontroller in 2021, and following with the RP1 southbridge chip for the main Raspberry Pi platform on Raspberry Pi 5. Our second-generation microcontroller, RP2350, was released in 2024. The ASIC team looks after everything in the silicon flow, from specification through design, verification, and implementation, including ATE test and qualification. With a small team, we get involved in all aspects of getting successful products into production.

As a DFT Engineer you will be responsible for creating, implementing, and verifying DFT solutions on future Raspberry Pi ASIC designs to ensure quality standards are maintained for products shipping in volume. You will use advanced DFT methods to balance requirements for test coverage, cost, and time to market.

The successful candidate will be:

• Able to define a suitable DFT strategy at chip, subsystem, and IP level, including structural and functional methods, and make pragmatic trade-offs between methods.
• Experienced with Tessent DFT tool flow for inserting MBIST, EDT, SSN, scan controls via IJTAG, and IP test using ICL/PDL, in both flat and hierarchical designs.
• Experienced in verification of DFT structures, and debugging related issues.
• Able to support DFT through implementation and sign-off, including generating timing constraints and debugging timing, power, and formal equivalence issues.
• Willing to share knowledge and mentor other members of the team. Key requirements:
• Experience with IC development flows.
• Experience with Tessent DFT tools.
• A good level of understanding of complex IP issues for DFT, including on-chip clocking.
• Experience in ATPG, MBIST, and simulation debug, including UPF-related issues.
• Willingness to contribute and share activities with a wider team.
• Good scripting skills, including TCL. The following would also be useful:
• Ability to demonstrate an understanding of advanced silicon technologies and fault models.
• Familiarity with test access standards, e.g. IJTAG/IEEE1687.
• Familiarity with vector translation and bring-up on ATE platforms.

In addition, candidates should have:

• A degree in electronic engineering, computer science, or a related discipline.
• A proactive approach to troubleshooting.
• The ability to coach other members of the team.
• Competitive salary based on level of experience
• Employer pension contributions of 8% when the employee contributes 4% of their gross salary into the salary sacrifice scheme
• Life assurance of 4 x base salary
• Income protection of 75% of base salary in the event of critical illness, commencing after 13 weeks of long-term illness or absence from work
• Private medical insurance (medical history disregarded)
• Access to our electric vehicle salary sacrifice scheme, subject to eligibility