Senior Network Engineer (all genders)
Location Warsaw, Mazovia, Poland Date posted October 21, 2026 Job ID 20887Our Opening and Your Responsibilities
The primary focus for this position is to capture business requirements towards enterprise-wide networking infrastructure across LAN, WAN, WLAN and Security and translate it into HLD/LLD. The network engineer is expected to troubleshoot and resolve complex problems related to network/security.
Key Responsibilities:
Serve as the primary point of contact for the business that addresses unique business requirements, including production facilities and R&D environments,
Design, test and develop enterprise-wide networking infrastructure across LAN, WAN, WLAN, security, and supporting systems such as DNS, IPAM, and AAA,
Enforce network security policies, firewall rulesets, and secure remote access protocols in collaboration with Cybersecurity teams to safeguard organizational assets,
Collaborate with the Managed Service Provider (MSP) to maintain LAN, WAN, WLAN, security, and supporting systems such as DNS, IPAM, and AAA across all global regions,
Act as a Subject Matter Expert (SME) within the designated technical scope, driving continuous improvement initiatives, managing configuration, updating High-Level and Low-Level Designs (HLD/LLD), and providing expert consultancy to MSP and internal teams,
Define, streamline, and optimize operational processes in partnership with MSP, the ServiceNow team, and other internal IT groups to enhance efficiency and service quality,
Lead automation efforts using tools such as Python, Ansible, and Terraform to implement Infrastructure-as-Code (IaC) practices and improve operational consistency.
What You Need to Succeed
- Minimum 5 years of experience in large-scale network and security planning, including Cisco routing/switching and enterprise-grade security solutions (preferably Fortinet),
- Excellent knowledge of English (written and spoken),
- Bachelor’s Degree in Computer Information Systems (or a related field),
- Strong knowledge of networking protocols such as TCP/IP, STP, DNS, OSPF, and BGP, along with hands-on experience with Cisco products including Catalyst and Nexus switches, routers, and ISE,
- Demonstrated ability to troubleshoot complex enterprise network problems including SD-WAN/IPSec performance, Certificate management, WIFI quality, etc,
- Solid understanding of HTTP/HTTPS protocols, web application security (OWASP Top 10), and DNS standard,
- Minimum either Cisco CCNP or equivalent knowledge.
Nice to have:
- SD-WAN deployment and performance troubleshooting experience,
- WAF implementations experience – proven record track in in tuning WAF policies, creating custom rules, and mitigating false positives with popular products (i.e. Fortinet),
- Experience with hybrid DNS environments (on-premises and cloud integration).
This role requires availability for rotating standby/on-call coverage outside regular working hours. On-call requests are rare, typically occurring only once or twice per month, as primary responsibility for incident handling rests with the service provider. Additional compensation is provided for standby duty.
Our Offer to You
- Contract of employment [umowa o pracę], we are looking for a long term cooperation,
- Annual reward,
- Flexible working hours,
- Hybrid work model (3 days of work from the office),
- A diverse and inclusive workplace.
- Festive benefits paid in April and December,
- Medical care with basic dental package (Medicover), with possibility to extend to Damian Medical Center,
- Possibility to extend medical care to family members,
- Life insurance with possible extended scope,
- Sports card (Medicover),
- Language courses,
- A vast training offer to support your development,
- Wellbeing activities, CSR, with space for your initiatives*
- Discounts for meals and special offers at Platan Business Park.
*We are focusing on entertainment and supporting your physical and mental health – check out our LinkedIn profile!
The recruitment process consists of the following steps:
- CV selection – we contact selected candidates
- Phone screening with a recruiter (approx. 15 min)
- Initial interview with the Manager and Recruiter (video conference, approx. 1 hour)
- F2F meeting at the office.
The information obligation arising from Article 18 [3ca] of the Labor Code is fulfilled before establishing the employment.
About Mettler Toledo
METTLER TOLEDO is a leading global supplier of precision instruments and services. We are recognized as an innovation leader and our solutions are critical in key R&D, quality control, and manufacturing processes for customers in a wide range of industries including life sciences, food, and chemicals. We operate throughout the world with a culture shaped by innovation and international flair.
Equal Opportunity Employment
We are an equal opportunity employer and value diversity at our company. We give consideration for employment without regard to race, color, religion, sex, age, national origin, disability, sexual orientation, gender identity, genetic information, or any other protected classification. You can find more details in our Equal Employment Opportunity Policy.
Get to Know METTLER TOLEDO
Take a look at a “day in the life” of a METTLER TOLEDO employee. No matter where you work in this company, the team atmosphere comes through. METTLER TOLEDO may be precisely where you belong.
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We are an equal opportunity employer and value diversity at our company. We give consideration for employment without regard to race, color, religion, sex, age, national origin, disability, sexual orientation, gender identity, genetic information, protected veteran status, or any other protected classification. Learn your EEO rights as an applicant under the law.
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