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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Software Engineer, Test & Infrastructure II - **Company:** Vail Systems, Inc. - **Location:** United States - **Experience:** Experienced - **Contract:** Permanent contract - **Skills:** Java (Programming Language), JavaScript (Programming Language), .NET Framework, Application Programming Interfaces (APIs), Agile Methodology, Automation of Tests, C Sharp (Programming Language), C++ (Programming Language), Code Coverage, Code Review, Computer Programming, Databases, Continuous Integration, Software Debugging, DevOps, Distributed Systems, Perl (Programming Language), Junit, Python (Programming Language), Packet Analyzer, NoSQL, Ruby, Data Driven Tests, Software Engineering, SQL Databases, Test Data, Testng, WebRTC, Real Time Systems, Rspec, Grafana, Kubernetes Helm Charts, Pytest, Kubernetes, Kibana, Cucumber (Software), Api Management, Docker, Jenkins - **Published:** September 23, 2026 - **Apply:** https://www.thejobnetwork.com/job/7a8a3044-e202-406e-b34e-82f19aa32909/software-engineer-test-infrastructure-ii-bilingual-spanish ## About the Role We're engineers at heart, with a QA-first mindset and a passion for building robust, scalable systems that reveal issues before our customers do. As a Software Engineer, Test & Infrastructure II, you will be doing both English and Spanish QA testing of call flows and writing automated test cases. Please note: This position requires fluency in both English and Spanish. Required Spanish proficiency: C1 CEFR or higher (or equivalent). You must be able to understand and evaluate complex spoken and written Spanish, identify linguistic and localization issues in call flows, and accurately validate Spanish-language user experiences. What You'll Do, * Education: Bachelor's degree in Computer Science/Engineering or a related field, or equivalent experience * Experience: Typically, 2-5 years in software development, test automation, or QA infrastructure engineering. * Spanish proficiency: C1 CEFR or higher (or equivalent). * Programming Skills: Strong proficiency in one or more of Ruby, Java, C#/.NET, C++, Perl, Python, or JavaScript * Frameworks & Tools: Experience with JUnit, TestNG, PyTest, RSpec, Cucumber, or equivalent automation frameworks. * CI/CD & Containers: Working experience with Jenkins (or similar), Docker, and basic Kubernetes workflow (jobs, pods, Helm charts). * Systems Knowledge: Familiarity with distributed architectures, API testing, and network-level debugging. * Telecom/Media (Preferred): Exposure to SIP/SDP/RTP, WebRTC, or similar signaling and media systems. * Databases: Solid understanding of SQL and NoSQL databases for data-driven testing. * Analytical Skills: Strong problem-solving mindset, able to triage and isolate issues across multiple layers of the stack. * Collaboration: Experience in Agile environments; comfortable contributing to cross-functional sprint work, code reviews, and retrospectives., The base salary range provided is determined by market data matched to the job description and the level of the position, based in our industry and the Chicagoland area. We often consider candidates who do not meet all the qualifications listed in the job description (i.e., more or less years of experience, etc.). Therefore, an offer for this position may differ from the base salary range provided depending on the qualifications/skills of the candidate. In this case, an updated pay scale would be provided.Who We Are At Vail, we believe in the unique power of voice interactions to create more expressive, more intimate, and more efficient interpersonal interactions. Using Vail technology, we make millions of voice interactions better every day. We process around 10% of all toll-free call traffic in the U.S.; 1 in 10 times, when someone calls a customer support hotline, Vail is routing or interacting with that call. We are rapidly growing across multiple ## Description * Develop Advanced Test Suites: Own automation for complex functional, integration, and regression scenarios across distributed microservices and telephony systems. * Validate Real-Time Systems: Contribute to test harnesses that validate signaling flows (SIP, RTP, SDP, WebRTC) and API transactions under varying network conditions. * Enhance CI/CD Integration: Implement, optimize, and maintain automated test pipelines in Jenkins or similar systems, including containerized and Kubernetes-based environments. * Collaborate Across Disciplines: Partner with developers, QA peers, and DevOps engineers to ensure tests are integrated early in the release cycle and deliver meaningful insights. * Analyze Failures & Root Causes: Use log aggregation tools, packet captures, and dashboards (e.g., Kibana, Grafana) to diagnose failures and improve coverage or resiliency. * Contribute to Test Data & Metrics: Work with SQL and NoSQL databases to generate and validate test data, interpret automation results, and measure performance. * Mentor & Share Knowledge: Help guide junior engineers in automation practices, framework design, and debugging strategies. * Drive Continuous Improvement: Identify gaps in test coverage, reliability, and efficiency-propose and implement technical solutions that raise QA maturity. ## Related Videos - [How Unit Testing Saved My Career](https://www.wearedevelopers.com/videos/1642-how-unit-testing-saved-my-career) - [Leveraging Real time data in FSIs](https://www.wearedevelopers.com/videos/806-leveraging-real-time-data-in-fsis) - [Coffee with Developers: David Heinemeier Hansson](https://www.wearedevelopers.com/videos/875-coffee-with-developers-david-heinemeier-hansson) - [Unlocking the potential of Digital & IT at Vodafone](https://www.wearedevelopers.com/videos/602-unlocking-the-potential-of-digital-it-at-vodafone) - [From boy scouting to redrawing the landscape](https://www.wearedevelopers.com/videos/1140-from-boy-scouting-to-redrawing-the-landscape) - [NoSQL Data Modeling for Front-end Developers](https://www.wearedevelopers.com/videos/297-nosql-data-modeling-for-front-end-developers) ## Related Articles - [Highest Paying Tech Companies for Developers](https://www.wearedevelopers.com/magazine/220-highest-paying-tech-companies-for-developers) - [The 8 Best Code Testing Tools](https://www.wearedevelopers.com/magazine/402-the-8-best-code-testing-tools) - [The Most Popular IT Jobs on the Market](https://www.wearedevelopers.com/magazine/376-the-most-popular-it-jobs-on-the-market) - [The 12 Best Jobs for Software Engineers](https://www.wearedevelopers.com/magazine/401-the-12-best-jobs-for-software-engineers) - [Fully Remote Software Engineer Jobs](https://www.wearedevelopers.com/magazine/447-fully-remote-software-engineer-jobs) - [Software Engineer Salary London](https://www.wearedevelopers.com/magazine/252-software-engineer-salary-london)