Role Description Join our community as a QA Engineer today and thrive in a multicultural and multilingual environment while enjoying your home office. Unlock your potential by mastering new skills and achieving challenging goals in cooperation with our People First management approach. Excited? Let’s see what it takes. - Develop comprehensive test plans based on functional and technical specifications to ensure complete coverage; - Create, maintain, and execute detailed manual test cases using Zephyr integrated with JIRA; - Actively participate in daily squad stand-ups, sprint planning, reviews, and retrospectives in an Agile environment; - Log, track, and manage defects in JIRA, verify fixes, and coordinate retesting activities to ensure quality resolution; - Validate user stories and tickets to confirm compliance with defined acceptance criteria before release; - Apply a Shift-Left testing approach by engaging early in the development lifecycle and collaborating closely with Product Owners and Development teams; - Partner with Frontend engineers to transition manual test scenarios into automated test scripts using Cucumber, Gherkin, and Playwright; - Contribute to CI/CD pipelines by enhancing automated test coverage and supporting reliable, stable deployments; - Perform and support network, performance, smoke, and visual regression testing in production and customer-facing environments; Qualifications - Excellent English communication skills is a must (C1 both spoken and written); - 4–5 years of hands-on QA experience in SaaS or software product–based companies; - Strong understanding of software testing principles, methodologies, and the Software Development Life Cycle (SDLC); - Proven experience working in Agile environments, with familiarity in Shift-Left testing practices; - Working knowledge of CI/CD pipelines and quality integration within continuous delivery environments; - Self-motivated, proactive, and able to work autonomously with strong attention to detail and quality ownership; - Excellent analytical, problem-solving, and communication skills; Requirements - A foundation level in STQB Certified Tester will be a great plus; - A degree in a computing related field; - Experience in Automated Testing Knowledge of Postman. Benefits - Fixed Schedule: Mon–Fri: 09:00-18:00 (GMT+3); - Opportunity to cooperate fully remotely; - Inclusive international environment; - Compensation in USD; - Rewards for referring friends; - Balance between project workload and personal time, but also – internal health policy; - Responsive leadership interested in your development and long-lasting cooperation; - Greenhouse conditions for self-development; - A culture built on trust, with no time-tracking requirements; *The items listed in this section may vary depending on the terms of your engagement. Certain benefits and conditions typically apply to employees; independent contractors may not be eligible for all of these. The specific terms, including compensation, benefits, and work conditions, will be clearly defined in your agreement if selected.

Join our Team Role Summary: We are looking for a Packet Core Integration Engineer that provides support services for activities related to projects for operators in North America and South America, including participation in design, deployment, integration, configuration, upgrades and troubleshooting for 4G and 5G packet core solution's elements. It's an opportunity for you to grow and take new challenges in your career. We do not expect you to be an expert in 5G elements but experience ad broadness working with 4G packet core elements is key, demonstrating experience handling external customer and hands on in full cycle from deployment to troubleshooting. A Day in the Life of Integration Engineer and key role objectives: - Provide service delivery to telecommunication operators for North and South America. - Work directly with our customers and stakeholders to provide System Integration, Rollout, Optimization and problem solution, this includes application of knowledge like Linux, TCP/IP, Containers (Kubernetes, Openstack) and Virtualization technology to enable data capability upon 4G and 5G networks. - Being part of a highly motivated and diverse team of engineers to increase profitability and drive continuous improvement. - Get to work with an outstanding local and distributed team, while interacting closely with our customers. - Be able to influence and drive exciting, results-oriented projects. - You can remove barriers and address complex situations with regards to technical challenges in integration activities. - Conduct knowledge sharing with the team and continuously learning new stuff to enhance your own career. - Encourage simplification and automation. To be successful in the role, you need: - To have a business level of English B2-C1 or equivalent - Bachelor of Engineering or related field qualification - Up to 3 years' experience of Telecom experience with at least 1 year of experience in External Customer's Management. - Experience in Packet Core domain, 4G and 5G. - Hands on experience for 4G Elements for deployment, integration, configuration and troubleshooting activities (MME, EPG, SAPC, DSC) - Knowledge about 5G Elements (AMF, UPF, SMF, PCF, SC), functionality, interfaces and call flows. For this elements it is desirable to have hands on experience at least handling healthchecks and or deployments/upgrades. - Excellent communication skills and practical experience executing a consultative role. - Kubernetes knowledge and proven hands on experience. - Demonstrate motivation and proactivity to constantly transfer knowledge, improve processes and tools proposing efficient solutions. - Ability to demonstrate or have experience working with teams locally and globally. Things we truly value and embrace: - Continues drive for learning to broaden existing technical skills and abilities - Consultative ability, creative thinking, analytical and thought leadership mindset - Passion for your craft and innovation The role will also time to time, require you: - Able to travel outside Mexico. - To be flexible with working hours as Time Zone demands (Pacific time zone). About the Team: In our Packet Core team you will have the chance to be key part in networks evolution, continuously learning and developing your competences in 4G and 5G Core solutions. Applying other knowledge like containers and virtualization, that are key part of network evolution nowadays. If you like constantly evolving your knowledge and gaining experience in different technology aspects, this is a great place! Be part of our journey making the unimaginable possible for our customers while you build your career! Why join Ericsson?At Ericsson, you'll have an outstanding opportunity. The chance to use your skills and imagination to push the boundaries of what's possible. To build solutions never seen before to some of the world's toughest problems. You'll be challenged, but you won't be alone. You'll be joining a team of diverse innovators, all driven to go beyond the status quo to craft what comes next. What happens once you apply? Click Here to find all you need to know about what our typical hiring process looks like.Encouraging a diverse and inclusive organization is core to our values at Ericsson, that's why we champion it in everything we do. We truly believe that by collaborating with people with different experiences we drive innovation, which is essential for our future growth. We encourage people from all backgrounds to apply and realize their full potential as part of our Ericsson team. Ericsson is proud to be an Equal Opportunity Employer. learn more. Primary country and city: Mexico (MX) || Mexico City Req ID: 785202

Role Description We are looking for a Roaming (IREG) Engineer with hands-on experience in international roaming operations and a passion for the telecom industry. You understand the GSMA roaming ecosystem inside out and can independently drive partner onboarding from test planning through to production traffic. You are a methodical tester, a clear communicator, and comfortable working across multiple partner streams simultaneously. You are interested in using AI tools and workflows to enhance your efficiency. The opportunity is within the Roaming Management squad which is responsible for the technical validation, onboarding, and operational management of all roaming partnerships. Working closely with the commercial team, you will be the engine that turns signed agreements into live, tested, production-ready roaming relationships. Responsibilities - Execute IREG testing for new roaming partners (2G/3G/4G/5G) following GSMA IR.21 and IREG guidelines. - Drive end-to-end partner onboarding from a technical perspective: test planning, execution, fault resolution, and sign-off. - Prepare and maintain IR.21 documentation for the Telnyx network. - Validate and troubleshoot roaming signaling (Diameter S6a, MAP, GTP-C) during testing and post-launch. - Manage TAP and NRTRDE file reconciliation with roaming partners. - Coordinate with Platform Engineering and Software Engineering squads for network configuration changes. - Support roaming escalations and production incidents related to roaming connectivity. - Maintain accurate records of test results, partner status, and roaming configurations. Qualifications - 3+ years experience in international roaming operations, IREG testing, or a similar role at an MNO, MVNO, or roaming hub. - Strong understanding of GSMA standards: IR.21, IR.34, IR.65, IREG test specifications, AA.14, AA.19. - Hands-on experience with roaming signaling protocols: Diameter (S6a, S6d, S13), MAP, CAP, GTP-C/GTP-U. - Experience with TAP (R13+) and NRTRDE file processing and reconciliation. - Familiarity with roaming testing tools and signaling analysis (Wireshark, pcap analysis). - Understanding of LTE/5G roaming architecture (S8, N32, SEPP). - Ability to work independently across multiple partner onboarding streams simultaneously. - Strong written and verbal communication skills for cross-functional and external partner coordination. - Interest in using AI tools and workflows to improve efficiency. Bonus Points - Experience with roaming steering platforms. - Familiarity with eSIM and eUICC provisioning in a roaming context. - Experience with cloud-native telecom infrastructure. - Knowledge of VoLTE roaming (SIP, IMS) and VoLTE/VoWiFi testing. - Experience working with roaming hubs (e.g., BICS, Syniverse, Comfone). - Experience building AI-assisted workflows (e.g., LLM-powered analysis, copilots, automated reporting).

• Lead execution of comprehensive commissioning plans and provide technical oversight for system integration testing and validation • Configure and calibrate complex control systems including VSDs, instruments, metering, PLC, HMI, and SCADA applications • Author and lead Factory Acceptance Tests (FAT) and Site Acceptance Tests (SAT) with customers • Resolve complex technical issues during startup phases and provide expert troubleshooting under pressure • Mentor and train customer personnel and junior engineers on system operation and maintenance • Coordinate with project teams, customers, and subcontractors while ensuring compliance with safety standards and regulatory requirements