Software Engineer, Test & Infrastructure II (Bilingual Spanish)

Vail Systems Inc.; Deerfield (IL); Hybrid; USD 100,000 - 150,000; Full time

Benefits offered by this job

Medical, dental, and vision plans

Company-paid life insurance

401(k) with company match

PTO and parental leave

Job summary

Vail Systems Inc. is seeking a Software Engineer, Test & Infrastructure II to deepen automation and validate real-time signaling across web and telephony platforms. You will write automated tests, extend frameworks, and contribute to scalable QA infrastructure in a hybrid Deerfield/Chicago setting.

You’ll collaborate with developers, QA, and DevOps to ensure tests are integrated early in releases, while mentoring others and driving improvements in coverage and efficiency.

Qualifications

• Bachelor’s degree in Computer Science/Engineering or a related field, or equivalent experience.
• 2–5 years in software development, test automation, or QA infrastructure engineering.
• Proficiency in one or more of Ruby, Java, C#/.NET, C++, Perl, Python, or JavaScript.
• Experience with automation frameworks such as JUnit, TestNG, PyTest, RSpec, Cucumber, or equivalent.
• CI/CD & containers experience with Jenkins, Docker, and basic Kubernetes workflows.
• Familiarity with distributed architectures, API testing, and network-level debugging.
• Exposure to telecom/ media signaling systems (SIP/SDP/RTP, WebRTC) preferred.
• Solid SQL and NoSQL database knowledge for data-driven testing.
• Analytical mindset and collaboration in Agile environments.

Responsibilities

• Design and extend automation frameworks using Python, Perl, Java, or Ruby to adapt to APIs and systems.
• Develop automation for complex functional, integration, and regression tests across microservices and telephony systems.
• Validate signaling flows (SIP, RTP, SDP, WebRTC) and API transactions under varying network conditions.
• Enhance CI/CD pipelines with automated test processes in Jenkins and containerized/Kubernetes environments.
• Collaborate with developers, QA, and DevOps to integrate tests early in releases and provide insights.
• Analyze failures with logs, packet captures, and dashboards to improve coverage and resiliency.
• Work with SQL/NoSQL databases to generate and validate test data and measure performance.
• Mentor junior engineers in automation practices, framework design, and debugging.
• Identify gaps in test coverage and propose solutions to raise QA maturity.

Skills

Ruby

Java

C#/.NET

C++

Perl

Python

JavaScript

Education

Bachelor’s degree in CS/Engineering or related field

Tools

JUnit

TestNG

PyTest

RSpec

Cucumber

Jenkins

Docker

Kubernetes

Job description

Who You Are

You catch problems before they explode—testing edge cases and degraded paths others overlook so production fire drills can be prevented. You care deeply about the tools you use and create, shaping the internal frameworks and pipelines your team depends on. Your work validates millions of real-time customer interactions every day, from web to telephony platforms, and you’re always growing through peer reviews, knowledge sharing, and mentoring. You thrive in flexible, human-centered environments where hybrid collaboration and sustainable engineering aren’t just buzzwords, but the way you work. If you love building robust, high-throughput test platforms as much as we do, we’d love to hear from you!

At Vail, our QA Engineering team is deeply technical — we don’t just validate features, we build the frameworks and infrastructure that test real-world signaling flows, analyze media quality, and run performance tests that mimic millions of live voice and web sessions. 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: to be considered for this position, you must be fluent in English and Spanish.

What You’ll Do

• Design and Extend Automation Frameworks: Build maintainable, modular test infrastructure in Python, Perl, Java, or Ruby that adapts to evolving APIs and systems.
• 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.

Qualifications - We encourage you to apply if you think your experience may be a match, even if you do not meet all of the qualifications.

• 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.
• 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.

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 dimensions, including our customer base, the scope of products we offer, and the size of our team. Now is the right time for a strong candidate to join and grow with us. We have a supportive culture where employees are encouraged to achieve both personal and team goals because we believe growth leads to both business impact and personal fulfillment.

We offer competitive compensation and affordable benefits with flexibility and choice to meet individual and family (including Domestic Partnerships) needs, including:

Multiple medical, dental, and vision plan options

Company-paid life insurance, short and long-term disability

401(k) savings plan with company match(50% on first 6% of employee contribution)

35 days total annual PTO

Annual Bonus Program

Paid maternity and paternity leave

Relocation allowance

Employee referral bonus

Gym membership

Technical and Professional Development stipend

We are striving to implement and sustain an inclusive and equitable work environment for all employees by sourcing underrepresented groups and continually empowering those individuals within our organization to further enrich Vail’s communication solutions. We recognize that equitable and unique individuals benefit our teams’ problem-solving, innovation, and development efforts.

Our offices are located in Deerfield and Chicago, IL. Interviews and onboarding are conducted in our offices when possible. We observe a hybrid work format that provides employees flexibility to collaborate with team members based on business needs.