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Calvin JeffCJ
Open to opportunities

Calvin Jeff

@calvinkamau

I am a detail-oriented customer service and account support professional with a background in Information Security and Forensics. I have experience as

Kenya
Message

What I'm looking for

I’m looking for a role where I can lead customer support and drive sales outcomes through data-driven QA, strong CRM execution, and operational excellence—ideally in fast-paced teams that value continuous improvement.

I’m a dedicated professional with a diverse background spanning sales, customer support, fintech, contract administration, and technical services. I thrive in high-pressure environments—remote, hybrid, and on-site—delivering exceptional customer experiences and precise operational follow-through.

As a Customer Support & Sales Supervisor at Assurant (via CCI Kenya), I lead high-volume teams, handling 30–40 calls per shift with a clear focus on sales and issue resolution. I maintain top-tier Quality Assurance (QA) results and consistently exceed KPIs like Service & Repair efficiency and Customer Experience Survey (CES) scores.

Previously, as a Customer Support & Sales Representative with T-Mobile (via CCI Kenya), I surpassed sales and service activation targets while protecting billing accuracy. I managed complex account troubleshooting, including processing payments and resolving billing disputes within CRM systems.

I also bring founder and specialist experience: I co-founded Salamapay254, pitching fintech escrow payment solutions to prominent investors and securing incubation with the HiiL Justice Accelerator. Earlier, I interned as a Contract Specialist at AICO Management Consultants (Seattle,Washington), supporting complex contract administration and logistics/compliance documentation using tools like ClickUp, Slack, and Zoho CRM.

Experience

Work history, roles, and key accomplishments

AK

Customer Support & Sales Supervisor

Assurant (CCI Kenya)

Oct 2024 - May 2026 (1 year 7 months)

Handled 30–40 calls per shift while leading sales-focused customer support and issue resolution, maintaining 5-star QA ratings on most calls. Drove upsell of protection plans by troubleshooting device activation issues for US Cellular customers and consistently exceeded KPIs, including Service & Repair efficiency and CES scores.

TK

Customer Support & Sales Representative

T-Mobile (CCI Kenya)

Jun 2024 - Oct 2024 (4 months)

Met and exceeded KPIs for sales targets, service activation, and billing accuracy while sustaining strong Customer Experience Survey (CES) performance through empathetic problem-solving. Resolved complex account issues in CRM, including processing payments and handling billing disputes.

Education

Degrees, certifications, and relevant coursework

RL

Red Team Leaders

Certified LLM Security Professional (CLLMSP), LLM Security

Certified LLM Security Professional (CLLMSP) credential issued by Red Team Leaders in June 2026.

KCA University logoKU

KCA University

Bachelor of Science in Information Forensic and Security, Information Forensic and Security

Completed a Bachelor of Science in Information Forensic and Security at KCA University.

AN

Anza Academy (Antler Nairobi)

Startup Education, Startup Education

Participated in startup education through Anza Academy under Antler in Nairobi.

Tech stack

Software and tools used professionally

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