Software Engineer, Test & Infrastructure II (Bilingual Spanish)

Job overview

The Software Engineer, Test & Infrastructure II (Bilingual Spanish) role is hybrid and based in the Deerfield office, IL; compensation is $89,400–$116,400 per year. Vail’s technology supports millions of voice interactions, including toll-free customer support calls. The engineer builds and maintains automated test frameworks and infrastructure to validate call flows, APIs, and distributed systems. The work helps identify defects and performance issues before release, strengthen test coverage, and improve the reliability of customer voice and web interactions.

What you'll do

• Build modular test infrastructure using Python, Perl, Java, or Ruby
• develop automation for functional, integration, and regression scenarios across distributed microservices and telephony systems
• validate signaling flows and API transactions under varying network conditions
• maintain automated test pipelines in Jenkins or similar systems, including containerized and Kubernetes environments
• collaborate with developers, QA peers, and DevOps
• analyze failures using logs, packet captures, and dashboards
• work with SQL and NoSQL test data and performance metrics
• mentor junior engineers
• identify and implement improvements to test coverage, reliability, and efficiency
• perform English and Spanish QA testing of call flows and write automated test cases.

What we're looking for

Skills & competencies

software engineer

test infrastructure

bilingual spanish

hybrid

deerfield il

vail systems

qa engineering

test automation

python

jenkins

kubernetes

telephony systems

salary $89.4k–$116.4k

Work arrangement

• Weekend coverage required

Benefits & perks

• Medical, dental, and vision plan options
• company-paid life insurance and disability
• 401(k) match
• 35 days total annual PTO
• annual bonus program
• paid parental leave
• relocation allowance
• employee referral bonus
• gym membership
• technical and professional development stipend.

Why this role

Requires English and Spanish fluency, with Spanish proficiency at C1 CEFR or higher (or equivalent). The posting specifies a hybrid work format and identifies the Deerfield office as the work base.

About the employer

Vail Systems Inc. is hiring for this role. Industry: Wired Telecommunications Carriers. Sector: 51.