Senior Network and OT Engineer

ReOrbit; Helsinki; On-site; EUR 90,000 - 130,000; Full time

Benefits offered by this job

Relocation assistance

Lunch vouchers

Occupational health care

Health insurance

Job summary

ReOrbit is seeking a Sr. Network & OT Engineer to own and advance the global network that connects our offices, manufacturing sites and critical environments. You will lead architecture, hands-on operation, and security across OT networks including clean-room environments, coordinating with Engineering, Manufacturing and Security teams.

You will document standards, drive scalability, and ensure reliability across LAN/WAN, VPN and wireless networks for multi-site operations in Helsinki and beyond.

Qualifications

• 10+ years of experience in Network Engineering in OT or manufacturing environments.
• Hands-on experience designing and operating OT networks with segmentation and security.
• Experience designing global network architectures across multi-site organisations (LAN, WAN, Wi‑Fi, VPN).
• Incident response and troubleshooting for mission-critical production networks.
• Knowledge of network performance monitoring, redundancy design, capacity planning at production scale.
• Experience standardising network access and integrating new sites.
• Strong documentation skills and ability to create architecture docs and runbooks.
• Excellent communication and stakeholder management across Engineering, Manufacturing and Security.

Responsibilities

• Own the design and architecture of global network connectivity across all ReOrbit sites.
• Design, upgrade and support network infrastructure across HQ and connected offices, ensuring performance, scalability and efficiency.
• Own network monitoring, maintenance, troubleshooting and security across the global network estate.
• Document network architecture, technical standards and operational runbooks, creating a scalable foundation for future infrastructure growth.
• Own the OT and clean-room network environment, including infrastructure, systems architecture, connectivity, access control and security.
• Ensure the reliability, scalability and security of mission-critical manufacturing and ground-segment network infrastructure.
• Provide 24/7 incident response for critical OT and production network environments.
• Drive Wi-Fi standardisation across Helsinki and connected offices.
• Manage network-related support incidents end-to-end, ensuring the availability and redundancy of critical network links.
• Identify infrastructure risks, performance bottlenecks and single points of failure, driving improvements before they impact operations.

Skills

OT networks

Global design

Incident response

Network security

Monitoring

Documentation

Stakeholder mgmt

Manufacturing/clean-room networking

Job description

ReOrbit is looking for a Sr. Network & OT Engineer to own and develop the network infrastructure that connects our offices, manufacturing operations and mission-critical environments. As our Sr. Network & OT Engineer, you will take ownership of ReOrbit’s global network architecture while playing a critical hands-on role in our manufacturing and clean-room environment. You will design, operate and secure the infrastructure that enables reliable connectivity across our sites, while ensuring that our Operational Technology (OT) networks can support the increasing scale and complexity of spacecraft production. You will work closely with Engineering, Manufacturing, Security and Mission Operations teams to build a scalable, resilient and well-documented network environment. This is a role for someone who is equally comfortable defining architecture, troubleshooting critical infrastructure and being hands-on in production environments. It's an exciting chance to join a dynamic start-up, with the opportunity to make a real impact, to reach our goal of pushing the boundaries of space data transfer.

Responsibilities

• Own the design and architecture of global network connectivity across all ReOrbit sites.
• Design, upgrade and support network infrastructure across HQ and connected offices, ensuring performance, scalability and efficiency.
• Own network monitoring, maintenance, troubleshooting and security across the global network estate.
• Design and maintain LAN, WAN, Wi-Fi and VPN infrastructure for a multi-site organisation.
• Document network architecture, technical standards and operational runbooks, creating a scalable foundation for future infrastructure growth.
• Own the OT and clean-room network environment, including infrastructure, systems architecture, connectivity, access control and security.
• Ensure the reliability, scalability and security of mission-critical manufacturing and ground-segment network infrastructure.
• Provide 24/7 incident response for critical OT and production network environments.
• Work closely with Manufacturing, Clean-room and Mission Operations stakeholders to anticipate network capacity and infrastructure requirements ahead of production scale-up.
• Standardise network access controls and lead network integration activities as new sites and facilities are added.
• Drive Wi-Fi standardisation across Helsinki and connected offices.
• Manage network-related support incidents end-to-end, ensuring the availability and redundancy of critical network links.
• Identify infrastructure risks, performance bottlenecks and single points of failure, driving improvements before they impact operations.

Skills And Requirements

• 10+ years of experience in Network Engineering, with direct experience supporting industrial, OT or manufacturing network environments.
• Hands-on experience designing and operating OT or industrial networks, including network segmentation, access control and security for production or clean-room environments.
• Strong experience designing and managing global network architectures across multi-site organisations, including LAN, WAN, Wi-Fi and VPN environments.
• Experience providing incident response and troubleshooting for mission-critical or production network infrastructure.
• Strong knowledge of network performance monitoring, redundancy design, capacity planning and troubleshooting at production scale.
• Experience standardising network access and integrating new sites into an existing network architecture.
• Strong documentation skills and experience creating network architecture documentation, technical standards and operational runbooks.
• Excellent communication and stakeholder management skills, with the ability to work effectively across Engineering, Manufacturing and Security teams.

Nice to have

• Experience working in space, aerospace or precision-manufacturing environments.
• Cisco, Juniper or equivalent network certifications, such as CCNP or similar.
• Experience with clean-room or ISO-classified facility network requirements.
• Exposure to ground-segment or satellite communications infrastructure.
• Experience using scripting or automation for network configuration, monitoring or operations.
• Familiarity with ITIL or IT service management principles.
• An interest in growing into a broader IT Infrastructure and Support leadership role.

What does ReOrbit do?

ReOrbit builds the foundation for the next generation of space applications by transforming satellites into truly intelligent, interconnected platforms, defined by software. Our satellite design philosophy revolves around the idea that satellites must network, communicate with each other and thus improve mission efficiency. How can this be achieved? Thanks to a flexible software-first architecture, where all these aspects are dealt with upfront in the mission concept, as integrated functionalities. ReOrbit’s top-notch team of software engineers and system architects develop in-house software, procure hardware from the best-in-class suppliers, and seamlessly integrate the components to create flexible and secure satellites. Today, we are a rapidly growing company building a very strong multidisciplinary team to support our activities. We are headquartered in Helsinki, Finland with a subsidiaries in Bristol, UK, Bariloche, Argentina and Bengaluru, India.

Working at ReOrbit

At ReOrbit, we are focused on building a strong team as we believe nothing can be accomplished without innovative, humble and curious minds working together on a common goal. We’re all about fostering an inclusive, dynamic environment where equality and diversity are our strength.

We offer

• Challenging but rewarding environment – you will thrive if you are always reflecting on how to make things better. Your ideas will be heard.
• Ambitious and supportive network of people, who are motivated to change the space industry, bringing expertise from both classic and new space .
• Benefits such as lunch vouchers, events, parties, occupational health care and additional health insurance - but most importantly a possibility to be a part of a unique and diverse team, connected by similar mindset and sense of humor.
• We like to spend time together! You can choose activities whichever is to your liking – runOrbit, climbOrbit; become ping pong or board games champion.
• We support relocation and integration into Finnish society.

Join us in our journey of building software enabled satellites for secure communications and, thus, creating the most compelling in space data flow company of the new space era.

The Company may require a security clearance for certain positions. Any such security clearance will be conducted in accordance with applicable law and the Company's relevant policies

For agencies: We do not accept unsolicited CVs for our open vacancies. Any CV sent to our team unsolicited will reserve us the right to pursue a candidate without obligation to the sender. All candidate submissions must be conducted through our official channels and in accordance with our terms of engagement.