Summary
Overview
Work history
Education
Skills
Timeline
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Sean Cilliers

Wokingham, Berkshire,United Kingdom

Summary

Seasoned talent acquisition professional with over 15 years of experience building high-performing teams across a range of business areas. Brings a strong track record of partnering with leadership to scale teams globally, combining strategic sourcing with data-informed decision making. Experienced in leading and mentoring recruitment teams and embedding scalable hiring practices in fast-paced environments.

Overview

18
18
years of professional experience

Work history

Global Talent Lead

ONI
Oxford, Oxfordshire
10.2023 - Current

ONI is a biotech company specialising in super-resolution microscopy and single-molecule analysis. I lead global hiring to support their mission of advancing human health.


Key responsibilities:

  • Drive global talent acquisition strategy to attract top-tier talent across all business units.
  • Partner with business leaders to shape hiring plans aligned with growth goals.
  • Lead full-cycle recruitment and implement structured onboarding to support new hire success.
  • Champion data-driven hiring by integrating talent metrics into decision-making.
  • Support broader People initiatives, including performance management, employee engagement, and payroll.
  • Advise managers on employee relations matters and support resolution strategies aligned with company values.


Head of Talent - UK

Acelr8
London, City of London
03.2021 - 06.2023

ACELR8 is an RPO supporting high growth tech startups with end-to-end, embedded hiring solutions aligned to their brand and scale goals.


Key responsibilities:

  • Led and developed a high-performing team of talent partners across Europe, ensuring alignment with client goals and Acelr8’s delivery standards.
  • Established scalable hiring best practices, leveraging market insights and innovative sourcing strategies to attract top-tier talent.
  • Managed recruitment budgets and resource planning, optimising spend for maximum ROI and delivery impact.
  • Produced and presented performance and revenue reports to senior leadership, driving data-informed decisions and continuous improvement.
  • Conducted talent market research to inform strategic hiring plans, mitigate risk, and support market expansion.
  • Monitored account health and delivery metrics, ensuring consistent achievement of hiring targets and client satisfaction.

Lead Technical Recruiter

Source Coders
London
06.2017 - 03.2021

AI-driven talent solutions and embedded recruitment for tech companies.


Key client projects that I led while I was at Source Coders

  • Talent Manager, Greyparrot | Sep 2020 – Mar 2021

Led hiring for a computer vision startup creating AI solutions for recycling and waste management robotics.

  • Talent Manager, Cervest | Jun 2019 – Apr 2020

Managed recruitment for an Earth Science AI company delivering real-time climate risk insights using advanced AI.


Talent Acquisition Lead

Scede.io
London, United Kingdom
05.2018 - 01.2019

Scede partners with tech companies to scale teams across Europe and North America using flexible subscription and pay-as-you-go recruitment solutions since 2013.


Client project - Klarna May 2018 - January 2019

Leading a team of recruiters working with Klarna's software engineering team both in Berlin and Stockholm.

Key functions of the role.

  • Sourced skilled JavaScript and Java engineers for Klarna’s Product teams in Berlin and Stockholm.
  • Partnered with business leaders to develop talent acquisition strategies and prioritise hires.
  • Managed end to end recruitment and onboarding to ensure a seamless new hire experience.
  • Led a team of four recruiters.

Talent Acquisition Lead

Tabcorp Holdings Limited
Sydney, NSW
03.2016 - 04.2017

Tabcorp is a world-class diversified gaming and entertainment group and an ASX50 company with more than 5,000 employees


Led end-to-end hiring for the Digital and Technology teams across Sydney and Melbourne, while also supporting policy development and diversity initiatives. Collaborated on talent brand strategy, ran monthly tech meetups (including Node.js and Node Girls), and drove recruitment performance through data tracking and hiring manager engagement.


Director

Bridge Noble
Cape Town, South Africa
11.2012 - 10.2015

Practice Lead - Open Source and Mobile Development

Bridge Noble
London, London
09.2011 - 11.2012

Senior Consultant

Huntress Recruitment
London, England
06.2007 - 12.2010

Education

Front End Web Development - Learned the fundamentals of how the web works

Udacity
Mountain View, CA
2018

Secondary Education Exam -

South African College School
Cape Town, WC, South Africa
2000

Skills

  • Deep expertise in technical domains such as Product, Engineering, and Data, as well as a strong track record across Go-To-Market functions
  • Extensive global recruiting experience, having successfully hired across the UK, Europe, US, Australia and South Africa
  • Extensive experience with talent metrics and data-driven hiring strategies
  • Proficiency with ATS platforms including Greenhouse, Lever, and Workable
  • Proven track record in stakeholder management
  • Expert in remote hiring strategies covering sourcing, interviews, and onboarding
  • Proficient in utilising virtual collaboration tools for remote team communication


Timeline

Global Talent Lead

ONI
10.2023 - Current

Head of Talent - UK

Acelr8
03.2021 - 06.2023

Talent Acquisition Lead

Scede.io
05.2018 - 01.2019

Lead Technical Recruiter

Source Coders
06.2017 - 03.2021

Talent Acquisition Lead

Tabcorp Holdings Limited
03.2016 - 04.2017

Director

Bridge Noble
11.2012 - 10.2015

Practice Lead - Open Source and Mobile Development

Bridge Noble
09.2011 - 11.2012

Senior Consultant

Huntress Recruitment
06.2007 - 12.2010

Front End Web Development - Learned the fundamentals of how the web works

Udacity

Secondary Education Exam -

South African College School
Sean Cilliers