Test Engineer

🏢 Summary: The offer is for a Senior Network Test Engineer responsible for testing and validating industrial networking solutions in global engineering projects. The role involves building and maintaining test environments, verifying network protocols and topologies, and troubleshooting communication systems in industrial settings. It combines advanced networking expertise with hands-on hardware testing and collaboration with development teams. 🗂️ Requirements: Minimum 5 years of experience in networking or network/system testing, Strong knowledge of computer networks and communication protocols, Experience with enterprise networking technologies, Knowledge of STP, VLANs, DLR, routing, switching, Hands-on experience with networking devices and lab environments, Experience in functional and system testing, Ability to analyze and troubleshoot network issues, Experience in creating test cases and technical documentation, Very good English communication skills 📃 Skills: Ethernet, STP, VLAN, DLR, Routing, Switching, TCP/IP, LTE, Wi-Fi, 5G, CCNA, CCNP, Networking, Testing 🏢 Description: Join a global technology company specializing in industrial automation and networking solutions. The team develops and validates advanced communication systems used in industrial environments worldwide. As a Senior Network Test Engineer, you will work on testing and validating industrial networking solutions, building test environments, and ensuring reliability and stability of communication systems. The role combines networking expertise, system testing, and hands-on work with hardware devices in international engineering projects. Key responsibilities: Execute functional and system testing for industrial networking solutions Build and maintain test environments for industrial Ethernet networks Validate network topologies and protocols such as STP and DLR Analyze issues, troubleshoot network behavior, and document findings Collaborate with development teams to investigate and verify defects Create and maintain test cases and technical documentation Support improvements in testing processes and infrastructure Ideal candidate profile: At least 5 years of experience in networking, network testing, or system testing Strong understanding of computer networks and communication protocols Experience with enterprise networking technologies and troubleshooting Knowledge of protocols and technologies such as STP, VLANs, DLR, routing, or switching Hands-on experience with networking devices and laboratory environments Understanding of industrial or automation environments is a plus Very good English communication skills CCNA or CCNP certification (nice to have) Knowledge of wireless technologies such as LTE, Wi-Fi, or 5G (nice to have) Conditions: Form of cooperation: B2B contract Salary: 120 - 140 PLN net/h Hybrid work model - 3 days per week from the Katowice office Benefits: private medical care, life insurance, Multisport card Recruitment steps: Phone call with Recruiter (20 - 30 min.) Interview with the client Feedback and decision

🏢 Summary: The offer is for a Senior Network Engineer responsible for testing and validating industrial communication and Ethernet-based networking solutions in IT/OT environments. The role focuses on building test environments, configuring and troubleshooting industrial networks, and analyzing complex networking issues using diagnostic tools. It combines hands-on networking, system testing, and collaboration with international engineering teams. 🗂️ Requirements: Minimum 5 years of experience in computer networking, industrial networking, or system testing, Strong knowledge of Ethernet technologies and networking protocols, Experience in configuring and troubleshooting network devices, Knowledge of VLANs, routing, STP/RSTP, DLR, and redundancy protocols, Experience with network diagnostic and traffic analysis tools, Experience in designing and executing test cases, English proficiency (very good level) 📃 Skills: Ethernet, VLAN, Routing, STP, RSTP, DLR, Wireshark, TCP/IP, IT, OT, Automation 🏢 Description: Join a global technology company specializing in industrial automation and industrial communication solutions. The team is responsible for developing and testing advanced networking devices used in industrial environments worldwide. As a Senior Network Engineer, you will be responsible for testing and validating industrial communication solutions, building test environments, and troubleshooting complex networking issues in IT/OT environments. The role combines networking expertise, system testing, and hands-on work with modern communication technologies. On a daily basis, you will collaborate with international engineering teams and support the analysis and resolution of complex technical challenges. Key responsibilities • Design and execute tests for industrial communication devices and Ethernet-based solutions • Build and maintain test environments and network topologies • Configure and troubleshoot industrial networks, including VLANs, routing, STP/RSTP, and DLR • Analyze test results, report defects, and collaborate with development teams • Use diagnostic tools such as Wireshark and packet analyzers • Develop test cases and support test automation initiatives Ideal candidate profile • Minimum 5 years of experience in computer networking, industrial networking, or system testing • Strong understanding of Ethernet technologies and networking protocols • Experience with configuring and troubleshooting network devices • Knowledge of technologies such as VLANs, routing, STP/RSTP, DLR, or redundancy protocols • Experience with diagnostic tools and network traffic analysis • Very good command of English Conditions Rate: 120 - 140 PLN/h, B2B contract Benefits: Private healthcare, Multisport card and life insurance Work model: Hybrid - 3 days from the office, 2 days from home Recruitment steps Phone call or online meeting with a KUBO Recruiter - Aleksandra (approx. 20 min.) Interview with Client : on-site in the office in Katowice which will be devided into two parts: Technical interview Interview with the manager from the United States Possible additional stage: Short meeting with the PM from the USA (approximately 30 minutes) Decision and feedback

🏢 Summary: Senior Test Engineer role focused on designing and developing automated tests for embedded systems in industrial automation projects. The position involves building Python-based test frameworks and validating system functionality in Unix/Linux/QNX environments, with emphasis on networking and communication protocols. Hybrid work model with B2B contract. 🗂️ Requirements: 5+ years of embedded systems testing experience, Proficiency in Python, Experience with test automation frameworks, Hands-on experience with Unix/Linux/QNX, Strong knowledge of networking concepts, Understanding of communication protocols 📃 Skills: Python, Unix, Linux, QNX, Networking, Protocols, Automation, Embedded 🏢 Description: We are looking for an experienced Senior Test Engineer to join the team of our client – a global industrial automation company – working on cutting-edge solutions that support the automation of industrial processes. Key responsibilities Designing and developing automated tests for embedded systems Building and maintaining test automation frameworks in Python Testing system components in Unix/Linux/QNX environments Validating system functionality with a focus on network protocols and communication Ideal candidate profile 5+ years of experience in embedded systems testing Proficiency in Python and test automation tools Hands-on experience with Unix/Linux/QNX environments Solid understanding of networking concepts and communication protocols English proficiency at B2 level or higher (daily communication with international teams) Conditions B2B contract: 120 – 130 PLN / h net + VAT Hybrid work model (Katowice office: 3 days onsite, 2 days remote) Benefits: private medical care, sport card, life insurance Recruitment steps Phone call with Recruiter (Aleksandra) Technical verification call by the client Interview with the client Feedback and decision

🏢 Summary: Security Test Engineer role focused on validating and strengthening the security of industrial automation products and systems through comprehensive security testing and vulnerability analysis. The position involves white-box and black-box testing, firmware and protocol analysis, fuzzing, and development of automated security testing frameworks. It offers a hybrid B2B contract with competitive hourly rate and additional benefits. 🗂️ Requirements: Bachelor’s degree in Computer Science or related field, Hands-on experience with programming or scripting (preferably Python), Solid understanding of computer networking and troubleshooting, Knowledge of software security testing methodologies (white-box, black-box, fuzz testing, negative testing), English proficiency at minimum B2 level 📃 Skills: Python, Networking, Fuzzing, Reverseengineering, Wireshark, BurpSuite, IDAPro, Ghidra, Radare2, EthernetIP, CIP, Firmware, EmbeddedSystems 🏢 Description: Our client is a global technology leader specializing in industrial automation, digital transformation, and smart manufacturing solutions. We are looking for a Security Test Engineer to join a team responsible for strengthening the security of industrial automation products and systems. In this role, you will contribute to the development and execution of a comprehensive product security validation program, helping ensure the resilience of products against evolving cybersecurity threats. This position is ideal for a security-focused engineer who enjoys analyzing complex systems, uncovering vulnerabilities, and developing innovative testing approaches for embedded and industrial environments. Key responsibilities Execute white-box and black-box security testing as part of a structured product security validation program. Perform security assessments of industrial products and systems, including firmware, communication protocols, and device interfaces. Conduct protocol-level testing and validate industrial communication mechanisms. Analyze firmware and software binaries to identify security weaknesses, including reverse engineering activities when required. Design and execute fuzz testing and negative testing scenarios targeting device interfaces and communication protocols. Identify, validate, and document security vulnerabilities, including the creation of proof-of-concept (PoC) exploits when appropriate. Perform basic hardware-level security validation, including analysis of debug interfaces and physical access scenarios. Analyze test results, triage findings, and support root cause analysis together with development teams. Contribute to the development and maintenance of automated security testing frameworks and scripts, primarily in Python. Research emerging vulnerabilities, attack techniques, and threat trends relevant to industrial products and environments. Ideal candidate profile Bachelor’s degree in Computer Science or a related field. Hands-on experience with programming or scripting languages, preferably Python. Solid understanding of computer networking, including configuration and troubleshooting. Familiarity with software security testing methodologies, including fuzz testing, negative testing, and white-box/black-box testing. English communication skills min. B2 Nice to Have Experience with reverse engineering tools such as IDA Pro, Ghidra, or Radare2. Knowledge of industrial communication protocols, including Ethernet/IP and CIP. Experience testing embedded systems, firmware, or hardware devices. Knowledge of security testing tools such as Burp Suite and Wireshark. Conditions Contract type: B2B Rate: 140–165 PLN net/hour Work model: Hybrid (3 days per week from the office in Katowice) Benefits: private medical care, life insurance, Multisport card Recruitment steps Phone call with a Recruiter Client interview (may require 2 rounds) Feedback and decision

🏢 Summary: The role focuses on developing embedded software and firmware for advanced industrial automation products used in real-time environments. You will work in a Scrum team to design, implement, test, and deliver embedded solutions, collaborating closely with cross-functional stakeholders. The position is fully remote within Poland and offered on a B2B contract. 🗂️ Requirements: Bachelor’s degree in Electronics, Instrumentation Engineering or related field, Minimum 6 years of experience in embedded software development, Strong programming experience in Embedded C++, Experience with industrial communication protocols (Modbus, Profibus or EtherNet/IP), Experience in designing and maintaining real-time embedded systems, Experience in developing and maintaining automated tests, Knowledge of Ethernet and TCP/IP networking, Ability to work in a Scrum/Agile environment 📃 Skills: C++, Embedded, Firmware, Modbus, Profibus, EtherNet/IP, Ethernet, TCP/IP, Wireshark, Scrum, Agile, Testing 🏢 Description: Join a global technology company that designs and develops advanced solutions for industrial automation and control. The team builds  embedded products used in demanding, real‑time environments all over the world. If you enjoy solving complex technical problems, working with experienced engineers, and growing your skills in embedded software and firmware development, this role is a great fit. You can work from any place in Poland. The start is planned ASAP. Key responsibilities Work in a Scrum team to plan, organize and do the development work, taking part in all team meetings. Take care of your daily tasks with little supervision and handle new tasks based on general directions. Use your skills to help define, design, code, test and deliver embedded software and firmware features. Work with your team to gather needs, design solutions, build, test and deliver the product. Show the most important new features and parts of the product to stakeholders. Work closely with the Product Owner, Scrum Master, Release Train Engineer, Product Manager and others to agree on tools, processes and ways of working. Notice problems that stop the team from finishing work and help to solve them or raise them to the right people. Ideal candidate profile Bachelor’s degree in Electronics or Instrumentation Engineering (or a closely related field). At least 6 years of experience in embedded software or related development roles. Strong programming experience in Embedded C++. Experience with industrial communication protocols such as Modbus, Profibus, or EtherNet/IP. Ability to design, build, and maintain firmware for real‑time and embedded systems. Willingness to work in a self‑organizing Scrum team and contribute to Agile practices. Experience in developing and maintaining automated tests. Good communication skills and the ability to work well in a team. Experience with networking technologies such as Ethernet and TCP/IP, and tools like Wireshark. Conditions Form of cooperation: B2B contract Start: ASAP Salary: 130-150 PLN net/h Model of work: 100% remote from any place in Poland Benefits: private medical care, life insurance, Multisport card Recruitment steps Phone call with Recruiter (20 - 30 min.) Technical verification call by the client Interview with the client Feedback and decision

🏢 Summary: The role focuses on designing and implementing automated testing frameworks to validate programmable Ethernet switch software and firmware. It involves functional, performance, regression, and system-level testing of L2/L3 networking devices, with integration into CI/CD pipelines. The position centers on ensuring reliability of embedded networking solutions through Python-based automation. 🗂️ Requirements: Minimum 5 years of commercial experience in test automation, Strong experience in Python-based test automation, Experience with networking automation frameworks, Familiarity with Linux environments, Hands-on experience testing L2/L3 switches and routers, Experience with CI/CD tools, Ability to perform regression, stress, and system-level testing, Residing in Poland 📃 Skills: Python, Linux, CI/CD, Jenkins, GitLab, Ethernet, L2, L3, Switching, Routing, Docker, Ansible, Vagrant, C, C++, IxNetwork, Spirent, TRex 🏢 Description: Join our test and validation team to ensure the reliability and performance of programmable Ethernet switch software. You’ll design and implement automation frameworks and networking test scenarios to validate cutting-edge hardware and software solutions. By joining us, you become a member of the Embedded Competence Center at Sii is an internal organizational unit, bringing together more than 500 specialists nationwide! We are currently working on about 100 projects for 50 clients from various industries including automotive, IoT, telecommunications and medical. Your tasks Design and implement automated test suites for switch software and firmware Develop Python-based testing frameworks for functional and performance testing Perform regression, stress, and system-level testing on hardware platforms Integrate automated tests into CI/CD pipelines Work with developers to identify, reproduce, and verify fixes for software defects Requirements Minimum 5 years of commercial experience in a similar position Strong experience in Python-based test automation Familiarity with networking automation frameworks and Linux environments Hands-on experience testing physical and virtual L2/L3 switches and routers Experience with CI/CD tools (Jenkins, GitLab, etc.) Self-driven, analytical, and excellent team collaboration Good knowledge of spoken and written English (everyday communication) Residing in Poland required Nice to have Knowledge of C/C++ Experience with Docker, Ansible, or Vagrant Familiarity with traffic generators (IxNetwork, Spirent, TRex) What we offer Great Place to Work since 2015 - it’s thanks to feedback from our workers that we get this special title and constantly implement new ideas Employment stability - revenue of PLN 2.1BN, no debts, since 2006 on the market We share the profit with Workers - over PLN 76M has already been allocated for this aim since 2022 Attractive benefits package - private healthcare, benefits cafeteria platform, car discounts and more Comfortable workplace – class A offices or remote work Dozens of fascinating projects for prestigious brands from all over the world PLN 1 000 000 per year for your ideas - with this amount, we support the passions and voluntary actions of our workers Investment in your growth – meetups, webinars, training platform and technology blog – you choose Fantastic atmosphere created by all Sii Power People If you want to work on systems with high operational significance — apply now!

🏢 Summary: Role focused on designing and implementing automated test frameworks to validate programmable Ethernet switch software and firmware. The position involves functional, performance, regression, and system-level testing of L2/L3 hardware and virtual platforms, with integration into CI/CD pipelines. You will collaborate closely with developers to ensure reliability and performance of networking solutions. 🗂️ Requirements: Minimum 5 years of commercial experience in test automation, Strong experience in Python-based test automation, Experience with networking automation frameworks, Familiarity with Linux environments, Hands-on experience testing L2/L3 switches and routers, Experience with CI/CD tools such as Jenkins or GitLab 📃 Skills: Python, Linux, Ethernet, L2, L3, CI/CD, Jenkins, GitLab, Networking, Automation, Firmware 🏢 Description: Join our test and validation team to ensure the reliability and performance of programmable Ethernet switch software. You’ll design and implement automation frameworks and networking test scenarios to validate cutting-edge hardware and software solutions. By joining us, you become a member of the Embedded Competence Center at Sii is an internal organizational unit, bringing together more than 500 specialists nationwide! We are currently working on about 100 projects for 50 clients from various industries including automotive, IoT, telecommunications and medical. Your tasks Design and implement automated test suites for switch software and firmware Develop Python-based testing frameworks for functional and performance testing Perform regression, stress, and system-level testing on hardware platforms Integrate automated tests into CI/CD pipelines Work with developers to identify, reproduce, and verify fixes for software defects Requirements Minimum 5 years of commercial experience in a similar position Strong experience in Python-based test automation Familiarity with networking automation frameworks and Linux environments Hands-on experience testing physical and virtual L2/L3 switches and routers Experience with CI/CD tools (Jenkins, GitLab, etc.) Self-driven, analytical, and excellent team collaboration Good knowledge of spoken and written English (everyday communication) Residing in Poland required Nice to have Knowledge of C/C++ Experience with Docker, Ansible, or Vagrant Familiarity with traffic generators (IxNetwork, Spirent, TRex) What we offer Great Place to Work since 2015 - it’s thanks to feedback from our workers that we get this special title and constantly implement new ideas Employment stability - revenue of PLN 2.1BN, no debts, since 2006 on the market We share the profit with Workers - over PLN 76M has already been allocated for this aim since 2022 Attractive benefits package - private healthcare, benefits cafeteria platform, car discounts and more Comfortable workplace – class A offices or remote work Dozens of fascinating projects for prestigious brands from all over the world PLN 1 000 000 per year for your ideas - with this amount, we support the passions and voluntary actions of our workers Investment in your growth – meetups, webinars, training platform and technology blog – you choose Fantastic atmosphere created by all Sii Power People If you want to work on systems with high operational significance — apply now!

🏢 Summary: Early mid-level Configuration QA Analyst role focused on validating hardware-based solutions for monitoring oil & gas extraction processes, with an emphasis on structured testing, data validation, and system integration. The position involves verifying control logic, data models, and industrial communication protocols, with growth potential towards automation. Remote B2B opportunity within Poland. 🗂️ Requirements: Good understanding of JSON structures and data validation, Ability to analyze control logic, data flows, and dependencies, Experience with data models, signals, interfaces, and system integrations, Base experience with Python scripting, Experience using testing, validation, or configuration tools, Familiarity with industrial communication protocols such as Modbus or CANbus 📃 Skills: JSON, Python, Modbus, CANbus, Testing, Validation, Configuration, Protocols, Integration, Scripting 🏢 Description: We are hiring on behalf of our client, a forward-thinking energy provider developing innovative technology solutions for the energy industry. The company focuses on advanced subsea systems supporting oil & gas extraction and transmission, combining engineering expertise with practical industrial impact. We are looking for a Configuration QA Analyst at an early mid-level to join a team responsible for validating solutions implemented in hardware used to monitor oil & gas extraction processes. This role is ideal for someone strong in structured testing, data validation, logic verification, and system integration, with the potential and motivation to grow towards automation in the future. You will start by deeply understanding the testing process, business requirements, and system logic, with the opportunity to later contribute to automation improvements. Key takeaways: Tools and practices: JSON, structured data, triggers, sequences, function blocks, data points, signals, industrial protocols, Python Salary: 11 000 - 14 000 PLN net monthly +VAT on B2B for 6 months Working model : Remote Location: Poland Recruitment process : A call with Motife recruiter An online interview (technical and behavioral questions) Responsibilities: Validate JSON structures, data consistency, and data mappings. Test control logic, including triggers, sequences, and function blocks. Verify data models, signals, interfaces, and system integrations. Translate specifications and IO lists into test scenarios. Identify and report issues related to structure, logic, and integrations. Use validation tools and support improvements in testing processes. Requirements: Good understanding of JSON structures, data validation, and system mappings. Ability to analyze control logic, data flows, and dependencies. Familiarity with data models, signals, interfaces, and protocols. Base experience with scripting in Python Experience using testing, validation, or configuration tools. Knowledge of Modbus, CANbus, or other industrial communication protocols is a plus. Analytical skills, attention to detail, and willingness to grow towards automation. Apply now if you want to work on technically complex testing challenges, build strong domain expertise in industrial energy systems, and grow from manual testing towards more technical and automation-oriented responsibilities.

🏢 Summary: Remote Configuration QA Analyst role focused on validating hardware-based solutions for monitoring oil & gas extraction processes. The position involves structured testing of JSON data, control logic, system integrations, and industrial communication protocols, with growth toward automation. Ideal for candidates strong in data validation, logic analysis, and industrial system testing. 🗂️ Requirements: Understanding of JSON structures and data validation, Ability to analyze control logic, data flows, and dependencies, Experience with data models, signals, interfaces, and system integrations, Base scripting experience in Python, Experience with testing, validation, or configuration tools, Knowledge of industrial communication protocols (e.g., Modbus, CANbus), Ability to translate specifications and IO lists into test scenarios 📃 Skills: JSON, Python, Modbus, CANbus, Testing, Validation, Configuration, Protocols, Integration, Automation 🏢 Description: We are hiring on behalf of our client, a forward-thinking energy provider developing innovative technology solutions for the energy industry. The company focuses on advanced subsea systems supporting oil & gas extraction and transmission, combining engineering expertise with practical industrial impact. We are looking for a Configuration QA Analyst at an early mid-level to join a team responsible for validating solutions implemented in hardware used to monitor oil & gas extraction processes. This role is ideal for someone strong in structured testing, data validation, logic verification, and system integration, with the potential and motivation to grow towards automation in the future. You will start by deeply understanding the testing process, business requirements, and system logic, with the opportunity to later contribute to automation improvements. Key takeaways: Tools and practices: JSON, structured data, triggers, sequences, function blocks, data points, signals, industrial protocols, Python Salary: 11 000 - 14 000 PLN net monthly +VAT on B2B for 6 months Working model : Remote Location: Poland Recruitment process : A call with Motife recruiter An online interview (technical and behavioral questions) Responsibilities: Validate JSON structures, data consistency, and data mappings. Test control logic, including triggers, sequences, and function blocks. Verify data models, signals, interfaces, and system integrations. Translate specifications and IO lists into test scenarios. Identify and report issues related to structure, logic, and integrations. Use validation tools and support improvements in testing processes. Requirements: Good understanding of JSON structures, data validation, and system mappings. Ability to analyze control logic, data flows, and dependencies. Familiarity with data models, signals, interfaces, and protocols. Base experience with scripting in Python Experience using testing, validation, or configuration tools. Knowledge of Modbus, CANbus, or other industrial communication protocols is a plus. Analytical skills, attention to detail, and willingness to grow towards automation. Apply now if you want to work on technically complex testing challenges, build strong domain expertise in industrial energy systems, and grow from manual testing towards more technical and automation-oriented responsibilities.

🏢 Summary: Remote Automation Tester role focused on ensuring quality of web applications through both manual and automated testing. The position involves building and maintaining automated test suites, supporting API testing, and contributing to CI/CD processes within Agile frameworks. This opportunity targets experienced testers ready to enhance reliable online experiences in a 100% remote model based in Poland. 🗂️ Requirements: Minimum 2 years of commercial experience in manual and automation testing of web applications, Experience with test automation frameworks (Selenium, Jasmine, Playwright), Hands-on experience with API testing using Postman or similar tools, Understanding of CI/CD concepts and related tools, Experience working in Scrum or Kanban methodologies, Good command of Polish, Legal right to work in the European Union 📃 Skills: Selenium, Jasmine, Playwright, Postman, CI/CD, Scrum, Kanban, API, Automation, Testing 🏢 Description: Unleash the future of web application testing — innovate with precision and automation! Poland-based opportunity with 100% remote work model. As an Automation Tester , you will be working for our client, a leader in printing solutions, dedicated to delivering robust and reliable service. Join a team committed to quality, innovation, and continuous improvement as you support the development of seamless online experiences for users. Your main responsibilities: Perform manual testing of web applications to ensure quality and functionality. Create comprehensive functional documentation for tested units. Develop and maintain automated tests using tools like Selenium, Jasmine, or Playwright. Collaborate closely with developers to troubleshoot and resolve issues. Analyze business requirements and acceptance criteria to ensure test coverage. Support API testing using tools like Postman. Contribute to CI/CD processes and methodologies, working within Scrum or Kanban frameworks. You're ideal for this role if you have: Minimum 2 years of commercial experience in both manual and automation testing of web applications. Knowledge of test automation frameworks and scripting (e.g., Selenium, Jasmine, Playwright). Hands-on experience with API testing using Postman or similar tools. Understanding of CI/CD concepts and related tools. Proficiency in working within Scrum or Kanban methodologies. Good communication skills. Ability to work effectively within a team. It is a strong plus if you have: Experience with additional testing tools or certifications is advantageous. Language Required for the role: Polish (Good command) Eligibility for the role: Only candidates with an existing legal right to work in the European Union will be considered for this role. #MAKEYourCareerBETTER Interested? Apply now and include your CV (preferably in English) along with a statement confirming your consent to the processing and storage of your personal data.