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I’m a senior engineering leader specialising in stabilising, de-risking, and scaling production-critical systems for B2B clients. With 20+ years across Linux, cloud infrastructure, DevOps, and large-scale telephony platforms, I have a strong track record of reducing operational risk, controlling costs, and restoring reliability in complex environments. I’m typically engaged for short- to medium-term contracts that require deep technical ownership, including incident-heavy platforms, infrastructure rationalisation, cloud migrations, observability, and handover-ready outcomes. I’ve worked remotely for 13+ years across global teams and time zones. I’m a US/Australian dual citizen, globally mobile, and open to senior, remote, international engagements.…I’m a senior engineering leader specialising in stabilising, de-risking, and scaling production-critical systems for B2B clients. With 20+ years across Linux, cloud infrastructure, DevOps, and large-scale telephony platforms, I have a strong track record of reducing operational risk, controlling costs, and restoring reliability in complex environments. I’m typically engaged for short- to medium-term contracts that require deep technical ownership, including incident-heavy platforms, infrastructure rationalisation, cloud migrations, observability, and handover-ready outcomes. I’ve worked remotely for 13+ years across global teams and time zones. I’m a US/Australian dual citizen, globally mobile, and open to senior, remote, international engagements.

Kallon Weingarten

DevOps Developer, Cloud Developer, Programmer, +5

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I’m a senior engineering leader specialising in stabilising, de-risking, and scaling production-critical systems for B2B clients. With 20+ years across Linux, cloud infrastructure, DevOps, and large-scale telephony platforms, I have a strong track record of reducing operational risk, controlling costs, and restoring reliability in complex environments. I’m typically engaged for short- to medium-term contracts that require deep technical ownership, including incident-heavy platforms, infrastructure rationalisation, cloud migrations, observability, and handover-ready outcomes. I’ve worked remotely for 13+ years across global teams and time zones. I’m a US/Australian dual citizen, globally mobile, and open to senior, remote, international engagements.…I’m a senior engineering leader specialising in stabilising, de-risking, and scaling production-critical systems for B2B clients. With 20+ years across Linux, cloud infrastructure, DevOps, and large-scale telephony platforms, I have a strong track record of reducing operational risk, controlling costs, and restoring reliability in complex environments. I’m typically engaged for short- to medium-term contracts that require deep technical ownership, including incident-heavy platforms, infrastructure rationalisation, cloud migrations, observability, and handover-ready outcomes. I’ve worked remotely for 13+ years across global teams and time zones. I’m a US/Australian dual citizen, globally mobile, and open to senior, remote, international engagements.

Available to hire

I’m a senior engineering leader specialising in stabilising, de-risking, and scaling production-critical systems for B2B clients. With 20+ years across Linux, cloud infrastructure, DevOps, and large-scale telephony platforms, I have a strong track record of reducing operational risk, controlling costs, and restoring reliability in complex environments.

I’m typically engaged for short- to medium-term contracts that require deep technical ownership, including incident-heavy platforms, infrastructure rationalisation, cloud migrations, observability, and handover-ready outcomes. I’ve worked remotely for 13+ years across global teams and time zones. I’m a US/Australian dual citizen, globally mobile, and open to senior, remote, international engagements.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Beginner

Beginner

Beginner

Language

English

Fluent

Japanese

Intermediate

Work Experience

DevOps & Support Manager at Dubber Corp

December 1, 2017 - May 1, 2025

Promoted and implemented DevOps as a philosophy; managed 8-10 engineers across 3 continents; release management for core products (1000+ hosts across 8 regions); orchestrated level 2 & 3 support; driven infra monitoring, incident response, and governance; led cost-reduction initiatives and platform migrations.

Telephony Reliability Engineer at Ultra Mobile / Mint Mobile

June 1, 2025 - November 1, 2025

Analyzed call operation reliability for AI-assisted call-flow trials on large MVNO telephony platforms supporting 5M+ USA voice services; evaluated Kamailio routing and AI IVR trials; contributed to incident reviews, observability enhancements, and regression testing.

Senior Systems Architect at Invigor Group

August 1, 2016 - November 1, 2017

Led DevOps, configuration, automation, and orchestration; Head of DevOps for CI/CD and IT operations; architected IaC with Puppet/Foreman; oversaw platform resilience, governance, and cross-product integration.

Senior Engineering Consultant at Dubber Corp (ASX: DUB)

July 1, 2025 - December 31, 2025

Provided senior engineering governance across production-critical telephony infrastructure; delivered major cost reductions via AWS RDS & ElastiCache EOL upgrades and right-sizing; executed migrations to flagship Recorder solution and legacy recorder shutdowns (200+ servers); led Grafana platform migration to improve observability and enable retirement of legacy KOPS footprint; delivered hands-on leadership during transitions and developed SOPs for knowledge transfer to reduce key-person risk.

Lead DevOps / Ops Architect at Dubber Corp (ASX: DUB)

December 1, 2017 - May 31, 2025

Led HA and scalability architecture for 1000+ production instances; governed cost optimization, automation, CI/CD, and release processes; designed edge proxy and zero-downtime release strategy; implemented configuration management foundations; oversaw security governance and data protection; drove knowledge transfer and SOP creation.

Solutions Architect at Invigor Group (ASX: IVO)

December 1, 2014 - December 31, 2015

Delivered full-stack technical solutions for core BI and visitor analytics products; led Puppet-based infrastructure modernization and automation; defined governance for DevOps and deployment pipelines.

Senior Engineering Consultant at Dubber Corp

July 1, 2025 - December 31, 2025

Engaged via Weingarten Global Pty Ltd on a fixed-term B2B contract to provide senior engineering governance across production-critical telephony infrastructure. Delivered major cost reduction through AWS RDS and ElastiCache EOL upgrades and right-sizing, right-sized OpenSIPS and recorder fleets, and migrated to a flagship Recorder solution with legacy recorder shutdowns (200+ servers). Led Grafana platform migration, improving observability and enabling shutdown of legacy KOPS footprint. Provided trusted, hands-on technical leadership during transitions and developed SOPs for knowledge transfer to reduce key-person risk and enable SME offloading.

Solutions Architect / Head of DevOps at Invigor Group

December 1, 2014 - November 1, 2017

Full-stack technical solutions for multiple products; DevOps process automation; CI/CD implementation; infrastructure governance and cost optimisation across serialized product lines.