# 💻 Yechiel Kalmenson

> Senior Software Engineer | Cloud | IaaS | Databases | Kubernetes

Location: New York City Metropolitan Area, United States
Profile: https://flows.cv/yechiel

Growing up in Brooklyn shaped me into a lifelong learner and a natural teacher, having spent several years educating both children and adults in various subjects.

Transitioning from a support role years ago, I discovered my passion and quickly excelled as a software engineer, specializing in backend and infrastructure. 

Beyond coding, I am a dedicated advocate for ethical discussions in the tech industry, actively contributing through my blog, weekly newsletter, and speaking engagements at conferences.

## Work Experience
### Senior Software Engineer @ Rise8
Jan 2025 – Present

### Software Engineer @ VMware
Jan 2019 – Jan 2024 | New York City Metropolitan Area
- Worked on VMware's Data Service Manager (DSM) integrating key VMware Cloud Foundation native data services to help empower IT organizations with enterprise-hardened & easy to manage at scale data solutions.
- Worked on Tanzu’s Kubernetes Database Service developing Kubernetes operators for PostgreSQL and MySQL
- Maintained Davos, an internal tool that keeps track of CVEs and security vulnerabilities and integrated it with various external scanning
services like Black Duck, Trivy, and others
- Collected telemetry and insights into the use of our products to improve support by teams in the field

### Software Engineer @ Pivotal Software, Inc.
Jan 2018 – Jan 2019 | Greater New York City Area
- Worked on Pivotal's Open Source component, Pivotal Cloud Foundry (PCF), to ensure feature parity on Windows.

- Contributed a Windows implementation to the Open Source Envoy Proxy.

Transforming how .NET developers build and deploy software.

### Full Stack Developer @ Newtek Business Services Corp. (NASDAQ: NEWT)
Jan 2018 – Jan 2018 | Greater New York City Area
Maintained the company’s legacy PHP applications, triaged and fixed bug reports and new feature requests, got rid of security holes in some of the older parts of the code

### Integration Specialist/Developer Support @ Fidelity Payment Services
Jan 2016 – Jan 2018 | Brooklyn, NY
Bridged the gap between software engineering and merchant success by guiding external developers through complex payment gateway integrations.

• Internal Tooling & Engineering: Developed and maintained a custom internal web application used by the integration department to catalog, map, and track compatibility across various POS systems, e-commerce shopping carts, and payment gateways.
• Developer Experience (DX): Served as the primary technical liaison for external development teams, providing hands-on code-level support, API troubleshooting, and architectural guidance for REST API payment integrations.
• Solutions Architecture: Consulted with merchants to analyze their existing tech stacks, researching and architecting custom solutions to seamlessly integrate their infrastructure with Fidelity’s hardware and software ecosystem.
• Deployment & Operations: Managed the technical deployment and configuration of new enterprise accounts, ensuring smooth transaction processing from day one.

### Technical Support @ Fidelity Payment Services
Jan 2015 – Jan 2016 | Brooklyn, NY
Provided foundational technical support and onboarding for merchants, ensuring high reliability for their transaction ecosystems.

• Payment Gateway Support: Troubleshot and resolved complex technical issues for online payment gateways and standalone POS devices, minimizing merchant downtime.
• Account Deployment: Led the technical onboarding, configuration, and deployment of new merchant accounts, providing remote sessions to guide clients through system setups.

### Technical Coach @ Flatiron School
Jan 2017 – Jan 2017 | Remote - Part-Time
Helped students work out their challenges on their way to learning how to code.

Responsibilities included: using the Socratic Method to help students reach their own solutions, screen-sharing in real time to help tutor students,  review code in HTML/CSS, Ruby/Rails, Sinatra, SQL, JavaScript, Angular, React.

### Teacher @ Jewish Online School
Jan 2010 – Jan 2015 | Remote
Taught Jewish Studies in an online setting for children in remote communities all over the world.

Responsibilities included: preparing lessons (making sure they are engaging enough for 3rd graders a mouse-click away from YouTube), tracking students’ progress,  communicating with parents and faculty via email and phone.


## Education
### Talmudical Seminary Oholei Torah

### Rabbinic Ordination
Central Yeshiva Tomchei Tmimim Lubavitz

### Full-Stack Web Development
Flatiron School


## Contact & Social
- LinkedIn: https://linkedin.com/in/yechiel-k
- Portfolio: https://yechiel.me
- Portfolio: https://RabbiOnRails.io
- Portfolio: https://torahandtech.dev

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Source: https://flows.cv/yechiel
JSON Resume: https://flows.cv/yechiel/resume.json
Last updated: 2026-03-31