Quick Summary
1. Account Management: Manage 5 to 15 mature customer accounts simultaneously, monitoring their KPIs and periodically evaluating their success and value from SynaptiQ.
As a Customer Success Engineer, you will play a pivotal role in managing the end-to-end customer journey. Your responsibilities will range from overseeing the onboarding of new clients to managing the ongoing success of mature accounts. This role demands a proactive approach to account management, issue detection, and continuous platform and service improvement.
Your responsibilities will be:
1. Account Management:
- Manage 5 to 15 mature customer accounts simultaneously, monitoring their KPIs and periodically evaluating their success and value from SynaptiQ.
- Maintain and build long-term relationships with customers, ensuring their ongoing satisfaction and aligning services with their business goals.
- Identify opportunities for upselling and cross-selling, enhancing customer engagement and value.
- Define and report on success metrics for each account, including customer satisfaction scores, retention rates, and revenue generated from upselling.
- Continuously monitor the health metrics of our customer base to identify critical patterns.
- Proactively address potential issues and identify opportunities for further engagement and improvement.
- Conduct comprehensive training sessions and webinars for clients to ensure proficient use of the SynaptiQ platform.
- Develop user guides and training materials tailored to client needs.
- Foster customer advocacy by creating case studies, testimonials, and facilitating customer references that highlight the success and value of our platform.
- Work collaboratively within the Customer Success team and with other teams, including Presales, Support, and Development.
- Contribute to the ongoing growth and improvement of the platform and services.
To successfully fill this role, we are looking for someone with:
- A Master's degree in Engineering, or a related field.
- Minimum 2 years of experience in a customer-facing role, ideally in a high-growth environment.
- Proven track record of managing customer relationships and ensuring customer success.
- Strong analytical skills with a focus on KPIs and customer metrics.
- Full professional proficiency in English, with additional languages such as Dutch or French being a bonus.
- A commercial mindset, balanced with the ability to manage hands-on work and strategic projects.
- A proactive, results-driven attitude with a strong "get things done" mentality.
- Exceptional personal attributes, including empathy, patience, excellent listening skills, and the ability to remain calm under pressure.
Bonus points for:
- Experience in the energy industry (particularly solar, wind, or storage).
- Proficiency in CRM or customer success software such as Salesforce, HubSpot, Gainsight, etc.
Our offices are hidden in the centre of Brussels with a view on a pond, with ducks and a heron bringing a regular visit. In addition to a stimulating atmosphere in a highly motivated group of people, 3E offers a unique opportunity to further develop yourself in a company/team with an ambitious growth plan, delivering innovative services.
Furthermore:
- Training on the job by our experts so you get to know our solution and work in and out.
- Flexibility in our open-minded company.
- Home working (2 days per week).
- An international environment: projects in over 100 countries worldwide, colleagues of over 30 nationalities.
- Investment in your growth with many soft & hard skills training opportunities.
- A salary package including hospitalisation insurance, pension saving, €9 meal voucher/day, flexible income plan, 20 legal days off + 12 compensation days (per full year worked), sustainable transport subscription or bike allowance (€0.36/km).
Location & Eligibility
Listing Details
- Posted
- April 3, 2026
- First seen
- July 9, 2026
- Last seen
- July 9, 2026
Posting Health
- Days active
- 0
- Repost count
- 0
- Trust Level
- 22%
- Scored at
- July 9, 2026
Signal breakdown

3E provides intelligent compliance solutions for chemical and workplace safety, product stewardship, and sustainable supply chains, helping companies reduce risk and ensure safety and sustainability.
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