Senior CISCO Engineer - Cisco Voice (CUCM, SIP)

We are seeking a

Senior Unified Communications Engineer

with deep expertise in

enterprise voice and telephony

, who can lead and support the transition from

Cisco on-premises UC environments

to

Microsoft Teams Phone

and modern

CCaaS platforms

. This is a

hands-on senior engineering role

focused on

design, migration, and Tier 3 support

, working in a

global enterprise environment

across EMEA, US, and APAC.

Required

7+ years of experience

in

Unified Communications / Enterprise Voice

. Strong hands-on experience with: Microsoft Teams Phone Cisco Voice (CUCM, SIP) Solid understanding of

telephony fundamentals and SIP-based architectures

. Experience supporting or implementing

cloud-based telephony solutions

. Fluent

English (spoken and written)

– mandatory.

Nice to Have

Experience with

Oracle SBC

, Avaya, or similar platforms. Exposure to

Contact Center solutions

(Cisco UCCE, Five9, NICE CXone). Experience working in

large enterprise or global environments

.

What You’ll Do

Microsoft Teams Phone & Cloud Telephony Design, implement, and support

Microsoft Teams Phone

solutions. Lead and support

Direct Routing, Operator Connect, and Calling Plans

. Integrate Teams Phone with

SBCs and telecom providers

.

Enterprise Voice & Cisco UC

Support and maintain

Cisco on-premises voice infrastructure

, including: Cisco Call Manager (CUCM) SIP Trunking Provide

Tier 3 / engineering-level support

for complex voice issues.

Contact Center & CCaaS

Support migrations of Contact Center platforms: From

Cisco UCCE / Five9 To

NICE CXone CCaaS Ensure stable

SIP connectivity

between telephony and CCaaS platforms.

Migration & Global Rollouts

Execute telephony migration plans with minimal service disruption. Support global go-live events and post-migration stabilization. Collaborate with regional engineering teams and vendors worldwide.

¡Join Us!

Work on

enterprise-scale UC and telephony transformations

. Gain deep exposure to

Teams Phone and CCaaS modernization

. Collaborate with global teams and leading technology partners. Play a key role in high-visibility, business-critical projects

We offer:

GROSS Salary in BRL under CLT Job offer - Full time Job + Benefits + 100% Remote.

Don't hesitate and share your updated resume in English with us so we can review it and have the pleasure to discuss it in more detail.

.