About Us

lixivium (lɪkˈsɪvɪəm)
n, pl -iums or -ia (-ɪə)

1. (Chemistry) the process by which the core elements are extracted from a chemical solution

2. (Consulting) a solution derived from analysis of the key issues effecting an organisations productivity and engagement levels.

Lixivium is an Australian owned and operated consultancy. Having grown rapidly over the past 20 years, Lixivium has established itself as the preferred supplier to many of the largest organisations in Australia. Our diverse client group are drawn from Health, Government, Tertiary Education, Financial Services, Retail and a large number of SME’s.

With a head office in Melbourne as well as affiliates in all other states, Lixivium delivers its services to various locations for organisations Australia-wide.

Lixivium’s dedication and commitment to providing the highest quality consulting services has earned us an esteemed reputation with all of our 200+ clients.

Our Vision 

Lixivium's mission is:

"To apply comprehensive, best practice, evidence based consulting, in order to enhance the performance, and facilitate the growth of our clients organisations”

We continue to achieve our mission by assisting organisations to:
  • Hire the people best suited to positions and companies through the application of valid tests and assessment centres
  • Develop the skills and capabilities of our clients in the areas of leadership, culture, resilience, conflict resolution, change management, communication, and productivity and performance
  • Facilitate the process of organisational change so that any transition is smooth from both a ‘people’ and ‘system & process’ perspective
  • Coach and mentor their staff by the provision of team building, personality profiling and mediation sessions
  • Facilitate the career transition of employees to new roles or to, holistically, evaluate their overall career direction

Our Values

  • Communication
    We go out of our way to share information with each other in an open, honest and respectful manner in an attempt to help each person’s productivity and job satisfaction.
  • Teamwork
    We support each other by being aware of each other’s needs and workloads, and being prepared to go out of our way to help each other. Furthermore, one person's success or achievement is something that we all take pride in.
  • Accountability
    We each are responsible for the quality and timeliness of our work, and we hold ourselves accountable to our colleagues and to the business as a whole.
  • Client Focus
    We strive to exceed the client’s expectations by building strong relationships based on a thorough understanding of their needs, being responsive, and delivering quality work to the best of our ability.
  • Continuous Learning
    It is our pride in our knowledge base that drives us to never be satisfied with what we know and through a desire to continually upgrade our skills, we bring the very best IP to our client’s business’.
  • Maximising Potential
    Based on our emotional intelligence, we try to be the "best" we can be, no matter what our role - for the good of our clients and for our own personal and professional development.

Our Team 


As consultants, we are specifically trained in the design, evaluation and implementation of a wide range of best-practice and evidence-based approaches to organisational issues. We pride ourselves on our valid, innovative and effective approach in designing solutions and programs across a myriad of cultures and industry sectors.

Warren Senn, Director

As the Director of Lixivium Consulting for the past 22 years, Warren has worked across a diverse range of clients to deliver significant benefits in the areas of staff productivity and engagement.

As a Coach, working with senior leaders across all industry sectors, he has conducted over 2,500 hours of face-to-face coaching. His philosophy when coaching is to work with each individual holistically to help them review the various domains of their lives, and then decide which parts are sub-optimal and systematically work on those to bring about meaningful change. This approach engages individuals in a way that allows them to confront tough issues, acknowledge areas for improvement and develop action plans, always driven by the belief that each person should be the author of their own destiny.

In recent times, his work has almost exclusively been with many of Australia’s top companies to deliver both innovative and cutting edge best practice consulting solutions that both increase productivity and cater for the human synergistic elements in any organisation. This has included large Government bodies such as Department of Environment, Land, Water and Planning most of the public health services in Victoria, education settings such as Monash University, RMIT, Chisholm Institute through to specialist entities such as the UniSuper, City Holdings, InTouch, Telix Pharmaceutical and the Salvation Army.

Sandra Valentim, Senior Consultant

Sandra is an experienced organisational development consultant who has partnered with leaders to shape culture, embed change and develop the skills, capabilities, and professional resilience of their people for nearly 18 years.

Sandra has extensive in-house and consulting experience and has overseen major culture transformation programs, led global leadership programs, and held senior strategy consulting roles. Over the years, she has supported organisations to develop programs relating to culture, leadership, performance and workforce planning, coaching and mentoring, 360-degree feedback, personality profiling, and change management.

Sandra has worked closely with departments at Peter MacCallum Cancer Centre to spearhead the development of a Gender Equality Action Plan, as the organisation committed to creating an environment where there are no real or perceived barriers for women in attaining leadership positions and where remuneration is fair and equal.

In the private sector, Sandra consulted for a multinational professional services firm where she project led new market expansion in Asia Pacific for a US$3 billion Fortune 100 acquisition and prior to that led their Regional Talent Development Function for Asia Pacific.

Sandra is passionate about helping people recognise their natural strengths and realise their full potential through workshops, coaching and consulting in best practice contemporary leadership.

Sandra holds a Bachelor of Commerce in Industrial and Organisational Psychology (University of South Africa). She is also accredited in DiSC Profile, Certified IECL Level 1 Coach and Certified by Mental Health First Aid Australia®.

Danielle Lavee, Assessment Manager/Consulting Psychologist

Danielle is an experienced psychologist specialising in assessment for selection and development, career management and organisational development. She is passionate about utilising a wide range of psychometric tools and evidence-based assessment methods. Danielle’s focus is on helping individuals realise their career goals and assisting organisations to find the “right people for the right role”.

Her work has involved assessment, selection, vocational counselling, career management and organisational development within government, education, finance and corporate sectors. In recent times, Danielle worked closely with the Australian Defence Force to undertake the psychological assessment of candidates applying for the Army, Navy or Air Force and developing best practice standards at a national level for all recruiting psychologists. Projects have included high volume recruitment, assessment centres, 360-degree feedback debriefs and career management coaching of people at all levels of an organisation. She has facilitated training for internal and external stakeholders, conducted mediations and coordinated continuing professional development to ensure registration standards are met for psychology staff at a state level. Danielle has helped individuals establish and reach their career goals following redundancy utilising psychometric assessment and one-on-one coaching.

Danielle holds a Masters in Organisational Psychology, Macquarie University; Post Graduate Diploma in Psychology, University of Western Sydney; and a Bachelor of Science (Psychology); Macquarie University/Manchester Metropolitan University. Danielle is a registered psychologist with SHL/OPQ, Birkman, and Australian Defence Force psychologist accreditations.

Joanna Harrison, Office Manager / Assessment Administrator

Jo has many years’ experience supporting and contributing to the day to day operations at Lixivium Consulting. Her highly developed organisational skills enable Jo to work effectively and efficiently within the team to assist in meeting client expectations.

Through her process-oriented approach, Jo coordinates a broad range of client projects and administers a large volume of candidate assessments. This includes correspondence with participants, setting up survey software, the roll out of information and the input and processing of data. During her time conducting assessments, Jo has administered surveys to thousands of participants and so brings a wealth of knowledge and experience in handling all forms of participant queries.

Jo is committed to delivering high quality, best practice outcomes.

Annie Healy, Associate Senior Consultant

Annie develops and delivers organisational development and career management services to meet specific client and company needs encompassing the full life-cycle of organisational restructure from planning, communication, line manager training, through to the ongoing support of exiting employees. She is passionate about reaching the best outcome for both client and the individual.

Annie's expertise includes assisting organisations during periods of significant change, providing change management and strategic advice, delivering one-one career counsel, workshop delivery and group facilitation, psychometric assessments, and executive coaching.

Annie has more than ten years' experience as a career management and outplacement specialist and has worked with candidates from a range of sectors including Education, Transport, Health, Telecommunications, Retail, Government, IT, Finance and Banking. Some specific clients include The Royal Children's Hospital Melbourne, CoHealth, La Trobe University, Ericsson Australia, Australia Post, Superpartners & Melbourne IT.

Annie holds a Bachelor of Health Sciences, Honours in Psychology from La Trobe University and a Graduate Diploma, Counselling, ACAP (Aust. College of Applied Psychology).

Kim Hazendonk, Associate Consulting Psychologist

Kim is a registered psychologist with more than 15 years experience in both organisational and clinical neuropsychology. Most recently she has been consulting to leading corporations and Government in talent identification and management using valid and reliable psychometric and behavioural assessment tools. Kim also works as an executive coach, with a talent for empowering individuals to recognise their natural strengths and realise their full potential. Kim has worked professionally in Canada and London, and with her medical background, has developed a personal interest in workplace wellness and positive psychology.

Sarah Wood, Associate Senior Consultant

An outcomes-focused senior Human Resources professional with a passion for healthy and productive workplaces, Sarah has extensive in-house and consulting experience across multiple sectors including tertiary education, State Government, sport and finance.

Sarah is passionate about supporting organisations to maximise their business performance through the capabilities, behaviours, performance, development, reward and engagement of their staff, and designs and facilitates a range of programs, including highly-interactive workshops, to achieve this. Over the years Sarah has developed and conducted a large number of focus groups, workshops and team-building sessions for various State Government departments including DHHS, DET and DELWP. Most recently these include the Leading with Respect Program covering the modules of Giving & Receiving Feedback and Saying Yes to the Flexible conversation.

A certified HBDI practitioner, Sarah supports individuals and teams to develop and grow through building an awareness of human thinking preferences and how these preferences can be leveraged to maximise organisation success. She is also accredited in a change management methodology (AIM) which focuses on the human elements of organisational change programs, and is currently providing career coaching programs to a number of individual clients.

Sarah is experienced in individual and group coaching having successfully completed the Accredited Coach Training Program, a qualification recognised by the International Coach Federation. She has also been a mentor in the AHRI mentoring program for the past 8 years.

Sarah holds a Diploma of Business Management, Victoria University; a Bachelor of Arts (Honours in Geography), University of Nottingham; a Postgraduate Diploma in HR Management, University of Westminster, UK.

She is a graduate of the Australian Institute of Company Directors, and is currently a Victorian State Council member of the Australian Human Resources Institute. She is also accredited in the Accelerating Implementation Methodology (AIM change management (IMA)); a Certified Practitioner of Australian Human Resources Institute (CPHR); and a Certified Herrmann Brain Practitioner (HBDI).

Simon Osborne, Associate Senior Consultant

Simon has over 25 years’ experience as a manager, consultant, facilitator and coach. His experience has been gained in senior roles in both the public and private sectors and as a consultant with a major international consulting firm. He has outstanding skills in executive coaching, organisation development, management of change and leadership/management skills development. He has an honours degree in economics and qualifications in workplace training and assessment.

His private sector management roles have included the HR Director of a national manufacturing industry association and the senior manager in charge of leadership and management development in a major international financial institution. Simon has provided coaching to more than 450 managers and executives and is Lifetime Accredited in the Human Synergistics suite of personal and organisational assessment instruments.

Simon has delivered extensive executive coaching. Examples including coaching partners of an accounting firm, a general manager and the senior management team of a national supermarket chain, CEO and management team of a national education product supplier, local government and a dairy foods manufacturer. He has delivered leadership and change management programs for manufacturing, mining, service and public sector clients across Australia, Malaysia, Indonesia, Singapore, Hong Kong, Vietnam, India and Thailand. In recent years he has delivered feedback and coaching across the public sector, most recently for organisations such as Public Transport Victoria.

A key element of his current client work is built around the use of the Human Synergistics range of assessment and development instruments, specifically the Life Styles Inventory, Management/Impact, the Organisation Culture Inventory, the Organisation Effectiveness Inventory, Management Impact, Leadership Impact and the Customer Service Styles Survey to support the development of Constructive organisation cultures. He also uses the Team Management Profile, an Australian designed and internationally recognised assessment tool, to support the development of effective teams within organisations.

Simon holds a Bachelor of Economics (Hons), La Trobe University. He is also accredited in the Human Synergistics tools (LSI, LI, MI, GSI, OCI) and Team Management Profile.

Natasha Wilms, Associate Senior Consultant

Natasha Wilms is an experienced management consultant with over 15 years’ experience in Asia Pacific. She specialises in helping organisations work by building their capability through managing, developing and motivating their people to deliver outstanding results. Her experience spans multiple geographies with several years spent working in New Delhi, India.

Her work includes the design and delivery of organisation development programs, including leadership, team and individual development. Individual development work has included the assessment of individuals, provision of feedback on competencies and ongoing coaching, building emotional intelligence in leaders, and working with leaders to bring out the best in their employees to drive performance. In addition, Natasha works in the areas of competency modelling, job and organisational design and remuneration analyses. Through her understanding of job design and organisations, she helps clients to develop and implement a structure that truly drives business outcomes.

Her most recent projects include: A key assessor for an individual capability assessment project with a federal government department to assess ~2,200 EL1 and EL2 employees including behavioural event interviews, report writing and feedback sessions. Lead assessor for a financial services organisation identifying key talent and high potentials to transition in to GM roles. Identified key talent during a complex acquisition including behavioural event interviews, surveys, report writing and feedback for a global FMCG organisation.

Natasha has worked with several human capital consulting firms including over 14 years with Hay Group. She has also worked as a Research Manager for executive search firms including Watermark Search International and Slade Search and prior to this, she worked for a human resources management consulting firm in London.

Natasha holds a Bachelor of Arts, Monash University. She is also accredited with the British Psychological Society Test A and B as well as various other psychometric tools including Myers Briggs Type Indicator, Emotional Competency Inventory, Talent Q, Lominger and viaEdge Learning Agility.

Michelle Tucker, Associate Consulting Psychologist

Michelle is a consulting psychologist (PhD Organisational Psychology) specialising in psychometric assessment, selection and recruitment, coaching, leadership and sales development, facilitation and outplacement. She has worked with clients from a broad range of industries, including automotive, mining, banking, finance, health care, and retail sales.

Having managed projects in both the private and public sector, Michelle has engaged in the assessment and coaching of individuals at all levels. Adopting a solution-focused approach, Michelle works with individuals and teams to develop sales and leadership skills.

Michelle has a depth of experience in psychometric assessment for both selection and development. She has also conducted psychosocial risk assessments, culture and climate surveys and employee opinion surveys. Michelle has developed high potential programs; job analyses and has also developed and refined many HR programs and processes.

Our Clients 


Lixivium Consulting has provided consulting services to many of Australia’s largest companies and government organisations for the past 20 years. Boasting a wide client base throughout Australia, we have worked with a number of different organisations in a variety of industries.

Although many of our clients are in the Government, Education and Health & Community sectors, we also work across sectors such as Retail, Manufacturing, Finance, and Professional Services.