Open to work
Available for Consulting
CTO  ·  Infrastructure Architect  ·  Lead Developer

I build systems that scale without surprise — and fix the ones that don't. 7+ years as CTO at Next Millennium, leading full-stack development, infrastructure migrations, and distributed teams. Self-taught, execution-focused, and fluent in everything from Go and Node.js to Terraform, Nomad, and bare-metal DevOps.

Get in Touch What I Offer ↓ ↓ Resume
Jacob Klein
0+
Years experience
$0M+
Infra savings
0
Downtime migrations
Core Expertise
01
Infrastructure Architecture
From cloud to bare-metal, I design and build infrastructure that performs at scale without the AWS price tag. Specializing in cost-driven migrations that don't sacrifice reliability.
TerraformAnsibleNomadDockerBare-Metal
02
Full-Stack Development
End-to-end product development across frontend, backend, and APIs. Clean, maintainable code built for the long haul — not the demo.
Node.jsGoReactMongoDBRedis
03
Ad Tech & RTB Systems
Deep expertise in header bidding, Prebid server, OpenRTB, and SSP/DSP integrations. Built and scaled systems handling real-time decisioning at millions of QPS.
PrebidOpenRTBHeader BiddingAd Stack
Where I've Worked

7+ years
building
at scale.

One of the longest-tenured hands-on CTOs in the ad tech space — still writing code, still shipping.

Dec 2017 — Present
CTO & Lead Developer
Next Millennium Media · Montvale, NJ
Sole technical leader for a high-scale ad tech company. Designed distributed systems for real-time data processing, led a cloud-to-bare-metal infrastructure migration saving millions annually, and managed a distributed development team across multiple time zones.
Architected the full DevOps stack from scratch: IaC, CI/CD, containerized workloads, monitoring, and zero-downtime deployment pipelines.
System Architecture DevOps Team Leadership Prebid Server Cost Optimization
Ongoing
Independent Consulting
Cloud Cost & Infrastructure Advisory
Offering infrastructure migration consulting to companies with high AWS data transfer costs. Specializing in Prebid, ad tech, and high-egress API services where the savings are most dramatic.
AWS Migration Cost Analysis Bare-Metal
Education
Self-Taught Developer
Computer Science · Full-Stack · System Architecture
Learned independently through technical books and platforms like LinkedIn Learning. Built a comprehensive skillset covering programming, infrastructure, DevOps, and software architecture.
Technical Stack
Languages
JavaScript / Node.js
Go
Bash
HTML / CSS
Python (basic)
PHP (basic)
Infrastructure & DevOps
Terraform
Ansible
Nomad
Docker
Nginx / Traefik
Consul
CI/CD & Monitoring
GitHub Actions
TeamCity
Datadog
Prometheus
Grafana
Databases & APIs
MongoDB
Redis
SQL
REST APIs
OpenRTB / Prebid
Networking & Security
DNS Management
TLS / SSL
UFW / Firewall
Load Balancing
Frameworks & Ad Tech
React
Prebid.js
Prebid Server
Header Bidding
SSP / DSP Integrations
Soft Skills
Strong leadership and mentoring abilities
Experienced in code and infrastructure reviews
Clear communicator with both technical and business stakeholders
Ability to translate business requirements into technical solutions
Self-motivated with a strong ownership mentality
Result-oriented; follows through to completion
Fast, continuous learner and adaptable to changing priorities
Thrives under pressure and delivers quickly without compromising quality
Tech-savvy with a strong ability to quickly learn and adapt to new technologies
What I Offer
Real work.
Real results.

I don't just advise — I architect, build, and migrate. Whether you need a full infrastructure overhaul, a cost audit, or a technical lead who can own the stack end-to-end, I bring the same hands-on approach that's delivered results at scale.

My most in-demand consulting right now is AWS data transfer cost reduction — companies running ad tech, high-volume APIs, or media delivery are often sitting on $50K–$300K/month in avoidable transfer costs.

Let's talk →
Featured Service
AWS Data Transfer Cost Reduction
Migrate high-egress services from AWS to flat-rate infrastructure. Based on a real migration that eliminated $200K+/mo in data transfer fees. Ideal for ad tech, Prebid, APIs, and media delivery.
Explore + estimate your savings →
Potential annual saving
$1M+
General Consulting
Infrastructure & Architecture Advisory
System design, DevOps buildouts, cloud cost audits, IaC implementation, and technical leadership for teams that need a senior architect without the full-time commitment.
Get in touch →
Contract Development
End-to-End Project Delivery
Need something built properly? I take on contract engagements where I own the work end-to-end — from architecture and backend to frontend and deployment. You define the outcome, I deliver it cleanly, on time, without hand-holding.
Discuss your project →
Full-Time Role
Open to the Right Opportunity
I'm selectively open to full-time CTO, Lead Engineer, or Principal Architect positions. If you're building something ambitious and need a technical leader who can own the architecture, lead the team, and still write great code — let's talk.
Reach out →
References
Lazer Rubin
CEO · Next Millennium Media
718-614-4593 [email protected]
Benny Steuer
CFO · Next Millennium Media
347-278-0936 [email protected]
Abe Grun
Freelance Project
347-243-6297 [email protected]
Get in Touch
Let's build
something right.

Whether you're battling an AWS bill, building a new system, or need a technical partner who can lead and execute — I'm open to conversations.

Email yukshy@yukshy.com
Phone 845-376-9976
Location Suffern, NY  ·  Remote-friendly
LinkedIn jacob-klein-495174123 ↗