adesso Schweiz AG
Olten
(Senior) Network Engineer (all genders)
- 21 February 2026
- 100%
- Permanent position
- Olten
About the job
With us, AI expertise, engineering excellence and profound industry understanding come together – driven by people who want to make a difference together. This creates future-proof solutions that truly make a difference in our customers' daily lives. This succeeds through people who take responsibility, recognise opportunities and turn technological possibilities into tangible results. For this, we create an environment characterised by mutual support: space for professional development, open communities where knowledge is gladly shared, peer groups and training offers tailored to you. Trust, appreciation and jointly celebrated successes shape our collaboration and make development something that simply belongs with us.WHAT YOU CAN ACHIEVE
Networks are your home – from classic enterprise setups to modern SD-WAN and SASE architectures? You don’t just want to operate but actively develop, automate and secure? Then you fit perfectly into our team.
- Network operation & architecture: You plan, operate and optimise complex enterprise networks – from core to access layer. Switching, routing and segmentation are part of your daily routine, as is dealing with protocols and technologies such as Spanning Tree, OSPF, ISIS, BGP, VXLAN, EVPN, Multicast or QoS.
- Network Security & Firewalls: You take technical responsibility for the setup, configuration and secure operation of firewall and security solutions – including those based on Fortinet and Versa Networks. You ensure clean segmentation, policies and secure transitions between network zones.
- Multi-vendor environments: You feel comfortable in heterogeneous network landscapes and work confidently with solutions from various manufacturers such as Cisco, Fortinet, Versa Networks or F5. You recognise when each stack plays to its strengths – and integrate the components into a stable overall platform.
- Teamwork & collaboration: You work closely with colleagues from engineering, regularly exchange best practices and support knowledge building within the team.
- Customer focus & collaboration: You take technical responsibility in customer projects – from requirements analysis through design and implementation to operation – and work closely with sales and manufacturer partners, e.g. in pre-sales phases (RFP, RFQ).
- Professional development: You help to further develop our engineering standards, share your knowledge (e.g. in internal workshops or whitepapers) and are a sought-after sparring partner for technical questions.
HOW YOU SUCCEED
- Education & experience: You have a degree in IT or a comparable technical qualification and bring at least five to six years of experience as a network or network security engineer – ideally in 2nd and 3rd level support as well as in project environments.
- Network understanding: You have deep knowledge of switching and routing technologies and know relevant protocols such as Spanning Tree, OSPF, ISIS, BGP, VXLAN, EVPN, Multicast and QoS. Network segmentation and secure architecture concepts are second nature to you.
- Security & firewalls: You have practical experience with network security and firewalls – especially with solutions from F5, Fortinet and Versa Networks. Ideally, you also have experience with the use of F5 BIG-IP and NGINX.
- SD-WAN & campus networks: SD-WAN is not just a term to you, but you have already been involved in operation, rollout or migration. Experience in wireless and campus networks is a plus.
- Automation & scripting mindset: You are confident with Python or have a demonstrable interest in further developing your skills in this area. You bring a fundamental automation and "infrastructure-as-code" mindset.
- AI competence: You use AI tools confidently in your field, critically evaluate the results and support customers and adessi in utilising AI potentials.
- Certifications: You have at least a current CCNP or FCP level or a comparable vendor certification – or are willing to obtain it promptly.
- Soft skills: You convince with analytical thinking, enjoyment of complex troubleshooting, a clear, solution-oriented manner and high service orientation towards our customers and colleagues.
- Flexibility: You are willing to travel project-related and enjoy working in agile teams.
- Language skills: You communicate confidently in German (at least C1 level) and have good English skills – both written and spoken.
OPPORTUNITY PROVIDER - WHAT MAKES ADESSO SPECIAL
Our promise: You will feel comfortable with us! Collegial, communal and on equal footing – we live exchange, team spirit and respectful interaction. Diversity and different perspectives are valued just as much as you as a person. That and much more stands for our very special sense of togetherness. For which there is even a word: adessi.- Learn and grow with us: With over 400 training offers and our digital learning platform, we support your continuous development.
- Experience true team spirit: Joint events (e.g. sports weekend and the annual eduCamp training trip), welcome days, company runs strengthen our cohesion and let you be part of the team from the start.
- Engagement that is rewarded: Your commitment pays off – with bonuses for referrals, presentations, supervision of theses as well as attractive discounts via our corporate benefits portal.
Contact
You will like it with us! Apply now directly online.adesso Schweiz AG // Recruiting // T +41 58 520 97 03 // career@adesso.ch
#LI-Hybrid
