Senior Control Systems Engineer

Sweden | June 1, 2026

Report as Closed

Company: Pinetree AB

Country: Sweden

Type: Onsite

Employment: Full-time

Description: OFFER

Net Insight is a pioneering technology company within media networks, resource optimization and time synchronization. Their Zyntai solution is used to distribute highly accurate time in critical 5G and network infrastructure — with nanosecond-level precision and without relying on GNSS.

We are now looking for a senior engineer with deep knowledge of automatic control, estimation, signal processing and mathematical modelling — combined with strong software engineering skills in modern C++ and Python.

This is not a general C++ role. It is a role for someone who wants to work close to the core algorithms, understand the underlying control problem, and turn advanced theory into robust production software.

You will join a highly technical team working with a modern product, senior colleagues and complex real-world engineering challenges.

Some of the benefits of working at Net Insight:

    

A world leader in media networks, resource optimization and synchronization technology

    

Work with advanced control algorithms in a real-world, large-scale product

    

A highly technical environment with modern tools and senior colleagues

    

Open and flat organization with strong teamwork and knowledge sharing

    

Family-friendly company with flexible working hours

    

Unusually low turnover and high employee satisfaction



THE PRODUCT AREA

Zyntai provides critical infrastructure, such as 5G base stations, with extremely accurate time synchronization. A Zyntai network consists of hundreds or thousands of TimeNodes that continuously exchange time information and measurements.

The system uses this data to estimate network and oscillator behavior and to control the local clock in each node. This requires advanced algorithms within control theory, estimation, filtering, signal processing and mathematical optimization.

The core challenge is to distribute time over complex networks with extremely high accuracy — without depending on GNSS.

For more info about the product, visit: https://netinsight.net/5g-sync



THE ROLE AND TEAMS

You will work in the team responsible for the core synchronization functionality in Zyntai. The team develops the algorithms and software used to process measurement data, estimate system behavior and control the oscillator in each TimeNode.

You will work with methods such as Kalman filtering, Model Predictive Control, PI/PID controllers, state estimation, signal processing and mathematical optimization.

Most implementation is done in modern C++ in the TimeNodes. Python is used for modelling, analysis, tooling, testing and development in Zyntai Director, Net Insight’s Kubernetes-based orchestration system for managing TimeNodes.

You need to be comfortable moving between theory and implementation: from mathematical reasoning and control system design to production-quality software in a distributed system.

YOUR PROFILE

We are looking for a senior engineer who combines strong knowledge within control systems with the ability to build high-quality software.

You probably enjoy understanding the underlying system — not just the codebase. You like mathematical and algorithmic challenges, and you are comfortable discussing control loops, estimation, stability, filtering, optimization and real-world system behavior.

You do not need to have worked with time synchronization before, but you need strong experience from automatic control, applied mathematics, signal processing, robotics, cybernetics, telecom, industrial systems or similar areas.

You need to have:

    

Deep knowledge of automatic control, control theory or cybernetics

    

Practical experience from designing, analysing, tuning or implementing control algorithms

    

Strong mathematical foundation within estimation, filtering, optimization, statistics, signal processing or dynamic systems

    

Experience from methods such as Kalman filtering, MPC, PI/PID, observers, state estimation or system identification

    

Strong software engineering skills in modern C++, preferably C++20/23

    

Good Python skills

    

Experience from Linux-based development

    

Ability to turn complex algorithms into robust, maintainable production code

It is an advantage if you have experience from:

    

Time synchronization, PTP, NTP, SyncE or GNSS-independent systems

    

Distributed or networked systems

    

TCP/IP and network communication

    

Kubernetes or cloud-native systems

    

Real-time or near-real-time systems

    

Graph theory, statistics or mathematical optimization

    

Telecom, 5G, industrial systems or robotics

This role is a great fit if you want to work where mathematics, control systems and software engineering meet.



ABOUT NET INSIGHT Net Insight is a global leader in media networks, resource optimization, and streaming solutions. With more than 25 years of experience, Net Insight is a trusted and important partner and a leading force in the media tech industry in creating a better media experience. More than 500 world-class customers run mission-critical media services using Net Insight’s solutions in more than 70 countries worldwide.

Net Insight is listed on Nasdaq Stockholm.

For more info, visit https://netinsight.net/

ABOUT PINETREE

At Pinetree, we have a vision and mission to differentiate ourselves from the crowd and are Sweden's contenders in talent search and matching.

By working as an agency, the value to you as an employee is that we have a wide network of partner companies that we continuously ensure high-quality standards.

This recruitment is direct employment at Net Insight AB and all applications, questions, administration, and recruitment processes are managed by Pinetree AB.

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