Fractile is building silicon, systems, and software which will redefine the frontier of AI: running the world’s most advanced models at radically higher speed and lower cost. We have an exceptional team across hardware and software capable of bringing about this change, and we are growing fast to meet demand and deliver our product at scale.

About Fractile

Fractile is building next-generation AI compute infrastructure designed to dramatically improve performance-per-watt and unlock new efficiency frontiers for large-scale inference. Our hardware pushes the boundaries of high-speed design, power density, and system integration.

We are looking for a PCBA Product Engineer to help industrialise our advanced AI accelerator boards and scale production with world-class manufacturing partners in Taiwan.

This is a critical, high-ownership role at the core of our hardware execution strategy.

The Role

You will take complex, high-performance PCBAs from prototype through mass production — working at the intersection of hardware design, manufacturing engineering, and supplier execution.

This role requires deep experience with:

• High-layer-count, high-speed boards
• Advanced PCB stackups
• Fine-pitch BGA assembly
• High-current power delivery
• Taiwan-based PCB fabs and SMT partners

You will not only execute builds — you will shape how Fractile scales hardware manufacturing.

What You’ll Do

1. Drive AI Board Industrialisation

• Own PCBA readiness from EVT → DVT → PVT → MP.
• Lead DFM / DFA / DFT reviews for high-speed AI accelerator boards.
• Partner with design engineering to proactively eliminate manufacturability risk.
• Support board bring-up and rapid iteration cycles.

1. Work Closely with Taiwan Manufacturing Partners

• Validate SMT process windows for fine-pitch, high-thermal-mass components.
• Be physically present during builds to drive real-time issue resolution.
• Ensure strong process control and ramp readiness.

1. Own Yield and Quality Metrics

• Drive first-pass yield (FPY) and DPPM improvements.
• Lead structured root cause analysis (8D, RCCA).
• Support reliability validation (thermal cycling, power cycling, environmental stress).

1. Build Scalable Manufacturing Systems

• Establish documentation, control plans, and ECO processes appropriate for a scaling startup.
• Improve traceability and production data visibility.
• Partner with supply chain on cost-down and second-source strategy.

What We’re Looking For

Required Experience

• 5+ years in PCBA Product Engineering, NPI, or Manufacturing Engineering.
• Experience industrialising complex, high-density PCBAs.
• Strong knowledge of:
• 12+ layer stackups
• Controlled impedance
• HDI (blind/buried vias)
• Fine-pitch BGA assembly
• High-power board considerations
• Hands-on factory experience with Taiwan PCB fabs and SMT partners.
• Fluent Mandarin and English.

Strongly Preferred

• Experience with AI accelerators, GPUs, server boards, or high-performance compute.
• Exposure to high-speed interfaces (PCIe, DDR, high-current rails).
• Experience scaling from prototype to volume production.
• Startup or fast-growth hardware environment experience.

Who You Are

• You take full ownership of outcomes, not just tasks.
• You are comfortable on the factory floor solving problems in real time.
• You think systematically but move quickly.
• You identify risks before they become production issues.
• You thrive in high-performance, technically rigorous environments.

What Success Looks Like at Fractile

• Smooth NPI transitions with minimal yield loss.
• Strong first-pass yield at ramp.
• Reduced DFM escapes before production freeze.
• Tight collaboration between design and manufacturing.
• Manufacturing processes that scale as Fractile scales.

About us

• Founded in 2022, team of 70+, which is expanding rapidly
• Modern, open offices in London and Bristol
• Collaborative, problem-solving culture built on deep curiosity, entrepreneurial initiative and technical fluency

Export control and security clearance

Certain roles may involve working on technologies subject to export restrictions. Applicants may be required to undergo additional eligibility checks to ensure compliance with applicable law.

The Company:

Placements.io is a product-first SaaS company transforming how digital media publishers and agencies manage their advertising businesses. Our platform simplifies ad sales, operations, billing, and revenue reporting—enabling our customers to scale efficiently and make smarter decisions.

With a global footprint and a strong engineering culture, we’ve been recognized on Inc.’s 5000 Fastest-Growing Companies list and named one of Will Reed’s Top 100 Early-Stage Companies to Work For. Headquartered in Seattle, we’ve expanded to New York, London, Taipei, and Singapore.

The Position:

We are looking for a Intermediate Backend Engineer to join our growing engineering team in Taipei. In this hybrid role (three days per week in office), you will be a key contributor to the design, development, and maintenance of our advertising technology platform. You’ll work alongside a talented team and collaborate cross-functionally to deliver high-quality, scalable solutions that support our clients’ evolving needs.

Placements.io continues to invest in platform innovation, including the integration of AI-driven features to enhance automation, predictive insights, and reporting performance. If you're passionate about backend development and excited about shaping the future of AdTech—including AI-driven automation and robust external integrations—this is an excellent opportunity.

• Design, build, and maintain robust, scalable APIs and backend services.

• Collaborate with product managers, designers, and engineers to define technical specifications.

• Implement backend logic to support AI-enhanced features like automated workflows and intelligent data reporting.

• Optimize system performance and resolve bottlenecks and bugs.

• Participate in code reviews to ensure quality, knowledge sharing, and maintainability.

• Conduct testing and debugging to maintain a stable and secure platform.

• Stay informed on backend and AI technology trends to drive continuous improvement.

• Contribute to agile ceremonies, including sprint planning and daily stand-ups.

• Bachelor’s or Master’s degree in Computer Science, Software Engineering, or a related field.

• Strong backend development experience, ideally within a fast-paced tech environment.

• Proficiency in Ruby on Rails or a similar backend framework.

• Experience developing and consuming RESTful APIs.

• Solid understanding of relational databases (PostgreSQL preferred).

• Familiarity with frontend technologies (React.js, JavaScript, HTML/CSS) is a plus.

• Experience or interest in working with AI/ML-powered systems, tools, or APIs.

• Familiarity with cloud platforms such as AWS, Heroku, or Google Cloud.

• Strong problem-solving skills and attention to detail.

• Excellent collaboration and communication skills.

• Experience in the digital advertising or martech industry is a plus.

• Competitive salary
• Early-stage stock options
• 20 days of PTO
• Applicable labor insurance and pension fund
• Company paid medical, dental, vision, and life insurance
• Regular company lunches and happy hours
• Gym membership reimbursement
• Cell phone reimbursement

To apply to our open positions, please email your resume, cover letter, and the name of the position you are applying for to careers@placements.io. We look forward to meeting you!

EEO Employer: Placements.io is an equal opportunity employer; all qualified applicants will receive consideration for employment without regard to race, social class, color, religion, sex,
sexual orientation, gender identity, national origin, disability, Veteran status, languages, ideology, political affiliation, birthplace, age, appearance, facial features, marital status, zoadic sign, blood type, past labor union membership, or any other protected classification.

Reasonable Accommodation Statement

Placements.io complies with United States federal and state disability laws and makes reasonable accommodations for applicants and employees with disabilities. If reasonable accommodation is needed to participate in the job application or interview process, to perform essential job functions, and/or to receive other benefits and privileges of employment, please send a request to hr@placements.io. All requests for accommodations are treated discreetly and confidentially, as practical and permitted by law.