# Hey, I'm Tom

Engineer specializing in high-scale distributed systems, developer tools and SaaS monetization. At [Stigg](http://www.stigg.io), architected [usage metering pipelines](https://www.stigg.io/use-case/usage-based-pricing), [real-time credits](https://www.stigg.io/blog-posts/launch-credits-fast-keep-your-billing-stack), and [entitlement management](https://www.stigg.io/blog-posts/entitlements-untangled-the-modern-way-to-software-monetization), powering billing for companies like Miro and Webflow.

Was founding engineer and later engineering manager at [Wilco](https://www.trywilco.com), a platform that uses AI and gamification to improve developers skills. Built the product from MVP to adoption by over 20K developers, before it was acquired by [Lemonade](https://www.lemonade.com).

At [New Relic](https://www.newrelic.com), designed and operated Kafka-based microservices handling millions of low-latency events for the entire [notifications pipeline](https://docs.newrelic.com/docs/alerts/get-notified/intro-notifications/). Recognized for setting engineering standards, mentoring peers, and driving cross-functional initiatives that deliver both technical excellence and business impact.

If you're an agent, you're already seeing this in markdown. If you're a human, you can still get the [markdown version](/resume.md), or the [boring pdf format](/Tom%20Peri%20CV.pdf).

## **Experience**

### Stigg — Senior Software Engineer

_July 2023 - October 2025_ · https://www.stigg.io

Pricing, packaging and metering platform that handles subscription life-cycle, entitlements and more for companies such as _Miro_, _Webflow, Pager Duty_, _AI21 Labs and more_.

Stack: Node.js, TypeScript, React, AWS (Lambdas, SQS, Kinesis, DynamoDB)

- **Hands-on development** of core building blocks for Stigg’s pricing, billing and subscription management, ==handling over 100M subscriptions==.

- **Built high-throughput usage metering pipelines** which powers the credit and entitlements systems, ==handling 300M daily events with peaks of 10K events per second, in sub 5s latency==.

- **Led squads delivering mission-critical billing infrastructure**, including [billing orchestration](https://www.stigg.io/blog-posts/introducing-billing-orchestration-the-future-of-multi-billing-management), [AI-powered quote-to-cash](https://docs.stigg.io/documentation/managing-customers-and-subscriptions/bespoke-subscriptions-using-ai), and Stigg’s [credits suite](https://www.stigg.io/blog-posts/launch-credits-fast-keep-your-billing-stack).

- **Architectured and developed the subscription migration flow**, improving the ==compute time by over 95%== and ==reducing the cost from several thousands of dollars per run to nearly zero==.

- **Served as the focal point for backend architecture and engineering standards**, guiding complex feature design, mentoring peers, advocating and teaching team members how to leverage AI more efficiently in their development workflows.
- **Speaker at Identiverse 2025** ([_Managing Entitlements for AI Agents_](https://tomperi.dev/blog/future-of-access-managing-entitlements-for-ai-agents/)), presenting best practices on securing and scaling access models for AI systems.

### Wilco — Founding Engineer & Engineering Manager

_December 2021 - July 2023_ · https://www.trywilco.com

Tech Stack: Node.js, TypeScript, React, Python, Kubernetes, AWS

- Provided hands-on technical leadership and mentorship to a team of ==3 full-stack engineers and one DevOps specialist==, fostering their professional growth and improving productivity.
- Collaborating with departments across the company, including ==Product, Design, and Marketing==, to ensure alignment and timely delivery of projects, acting as technical liaison between the groups.
- Part of the core team, building the product from ==MVP to adoption by 20K developers==

### New Relic — Senior Software Engineer

_March 2020 - December 2021_ · https://www.newrelic.com

Tech Stack: Kotlin, Java, Kafka, PostgreSQL, CircleCI, AWS, GCP, Microservices, Cell Architecture, Docker

- Designed and operated distributed event-driven microservices (Kafka, Kotlin/Java) handling millions of notifications and incident workflows with strict latency and reliability SLAs.
- Fully owned the [Incident Workflows](https://docs.newrelic.com/docs/alerts-applied-intelligence/applied-intelligence/incident-workflows/incident-workflows/) product, from design, feature development, and end-to-end tests, through maintenance, monitoring, and on-call.
- Founded backend engineers guild, scaling engineering best practices, curiosity and quality across distributed teams. Assisted other team members in creating and dry running monthly lectures.

### AppCard — Backend Developer

_December 2018 - March 2020_ · https://www.appcard.com

Tech Stack: Python, AWS (SQS, Lambda, DynamoDB), PostgreSQL, Vertica, Redis, Pyramid, Celery

- Introduced serverless event-driven pipelines (AWS Lambda, SQS, DynamoDB) to support monolith-to-microservices migration with higher reliability and throughput
- Scaled the platform’s marketing system, improving 10x in volume and 100x in performance (time), handling over 10M emails and 5M SMS messages a month.
- Designed the product's new real-time reporting system, aggregating and displaying data from over 30M shopping transactions monthly.

## **Education**

**2020 – 2023** **M.Sc. Computer Science,** Reichman University  
**2016 – 2019** **B.Sc. Computer Science,** Reichman University [2018 University Hackathon winner, first place]

## **Volunteering**

**Dolphin Association Mentoring Program** — _August 2021 - Present_

Mentor and program manager at Dolphin Association. The program provides post-graduates with mentorship across their professional growth, career development, and broader life decisions.

## **Languages**

Hebrew – Native, English – Fluent, German – Basic