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      TM Forum

      Engaged Employer

      TM Forum reviews

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      3.4

      60% would recommend to a friend

      (53 total reviews)

      Nik Willetts

      50% approve of CEO

      60% positive business outlook

      Ratings by category

      3.3

      Culture & values

      3.3

      Work/Life balance

      3.3

      Compensation and benefits

      3.2

      Diversity & inclusion

      3.2

      Career opportunities

      2.9

      Senior management

      TM Forum has an employee rating of 3.4 out of 5 stars, based on 53 company reviews on Glassdoor which indicates that most employees have a good working experience there. The TM Forum employee rating is in line with the average (within 1 standard deviation) for employers within the Telecommunications industry (3.6 stars).

      Ratings by demographic groups

      Reviews by job title

      53 reviews
      1.0
      May 20, 2026

      Toxic at the top

      Anonymous employee
      Recommend
      CEO approval
      Business Outlook

      Pros

      - Some great people, who are passionate, care about members, their role and company.

      Cons

      - The company treats employees terribly. - Abuse is rife from the top, then covered up by Management Board, Leadership Community and HR. - Nepotism and favouritism. - CEO/Management Board/certain members of the Leadership Community and the HR team should be embarrassed for what they have let the company become. - Around 10 HR staff for a 150 person company - who spend their time covering up bad behaviour and shady practices. - Only a lucky few (for example Engagement Members or certain individuals in the CTO office) are respected by the SLT, most others are treated badly, and are miserable/depressed. - Arrogant, narcissist leadership - they think everyone is poor at their job, which in reality is the opposite. - Unless you are prepared to bow to certain leaders you have no status in the company. - The company is very quickly getting a very bad reputation externally. - Good people are regularly discarded without care. - The company values are not carried out by most at the top. - Everyone is disposable. - Revolving door in the past couple of years. - Loyalty and contributions irrelevant unless you are one of the chosen few. - Suspect reviews on Glassdoor - up until 20th January 2026 there had been around 30 total reviews in 11 years. Then 4, 5* reviews all appeared on the same day. Then after a few bad ones, an AI looking review will appear. Make of that what you will. - Culture of fear - an entire department was let go in September 2025, but not even mentioned. - Consistent redundancies at the end of each tax year,

      avatar
      TM Forum Response
      12h
      Thank you for taking the time to share your feedback. We are sorry to read that this has been your experience, and we take comments of this nature very seriously. While we do not recognise this characterisation of our organisation or our people, we are committed to listening carefully, learning where improvements are needed, and ensuring that concerns are handled appropriately and respectfully. We have established channels for colleagues and former colleagues to raise concerns confidentially, including through HR and leadership, and we encourage anyone with specific concerns to contact us directly so these can be properly reviewed. We remain focused on building a respectful, inclusive and high-performing culture, where people are treated fairly and consistently, and where our values are reflected in how we work together. Thank you again for your feedback.
      1.0
      May 11, 2026

      Circling the drain

      Manager
      Recommend
      CEO approval
      Business Outlook

      Pros

      Abundance of hardworking and caring people at the mid-level manager position on down.

      Cons

      No value placed on employee loyalty; consitently looses their best talent. Sub-market level salaries that were once offset by great benefits. Always hiring blue sky thinkers who contribute little to nothing without consideration of the "grunts" who do all the work and keep the machine running. High turnover among staff. Overly bloated HR department of 10 people for a company with 150 employees. CEO who thinks he's King Charles. Rampant signs of waste, fraud and abuse. Increasingly toxic culture.

      avatar
      TM Forum Response
      9h
      Thank you for taking the time to share your feedback and for recognising the dedication and commitment of many of our colleagues. We are disappointed to read this characterisation of TM Forum. While we recognise that not every employee’s experience will be the same, we do not believe this review reflects the experience of the majority of our people or the culture we strive to create. We take feedback seriously and continuously review our employee experience, reward offering, organisational structure and ways of working to ensure we remain an engaging and supportive place to work. Like many organisations, we make difficult business decisions from time to time, but we do so with careful consideration and respect for those affected. The claims made regarding our leadership, people practices and organisational culture are not consistent with the values, behaviours and standards we expect across the organisation. We are committed to fostering a workplace built on respect, accountability, inclusion and collaboration, and we encourage colleagues to raise concerns through the appropriate channels so they can be properly reviewed and addressed. We appreciate all feedback that helps us improve and wish you success in your future endeavours.
      Viewing 1 - 3 of 53 Reviews
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      ReviewsTM Forum reviews

      Glassdoor has 58 TM Forum reviews submitted anonymously by TM Forum employees. Read employee reviews and ratings on Glassdoor to decide if TM Forum is right for you.