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  • Gabor

    Back-end Web Developer

    Hungary/(GMT +1:00)

    Gabor is a PHP/Symfony backend engineer who builds async, integration-heavy systems. He designed a queue-based architecture for a new product, modernized an event-driven cargo platform with parcel-sorting APIs, and was the sole developer who took a BNPL payment platform from concept to production before coordinating multiple teams.

    Experience

    15 years

    Availability

    To be verified

  • Juan

    AI Engineer

    Guatemala/(GMT -6:00)

    Juan Pablo is a Python engineer who builds production AI systems with FastAPI, Django, and AWS. He led a 6-person team building a multi-agent platform for a construction marketplace, including bug-triage automation and a unified communications layer, and earlier cut warehouse spend by $35k a year with a custom CDC pipeline to BigQuery.

    Experience

    6 years

    Availability

    To be verified

  • Dmitry

    CTO

    Portugal/(GMT)

    Dmitry is a Flutter engineer who often builds products from zero to release, from a cosmetic-ingredient scanner that reads labels against the EU CosIng database to a staffing app launched from scratch. More recently, he co-founded and led a meal-planning app to 1,000+ active users in its first month.

    Experience

    15 years

    Availability

    Full-time

  • Stavros

    Platform Engineer

    Greece/(GMT +2:00)

    Stavros is a platform engineer working in Kubernetes, AWS and Terraform who has led cloud migrations, FinOps and reliability for global SaaS platforms. He moved a multi-tenant SaaS from MySQL to PostgreSQL, built low-RTO disaster recovery and SLOs, and recently contributed a container-memory fix to an open-source search engine.

    Experience

    19 years

    Availability

    Part-time

  • Piotr

    Data Engineer

    Poland/(GMT +1:00)

    Piotr is a data engineer working in Python, Spark, Databricks, Snowflake, and AWS who rebuilt a healthcare analytics platform from 1 TB to 100 TB per run and cut costs by $50k a month. As founding CTO of a clinician workflow startup, he also shipped 3 GDPR- and HL7-compliant MVPs and designed the data model to avoid $100k in compliance costs.

    Experience

    8 years

    Availability

    Part-time & Full-time

  • Claudio

    CTO

    Italy/(GMT +1:00)

    Claudio is an AI engineer working in Python, AWS, LangChain, and TypeScript who has shipped LLM and ML systems as a hands-on CTO. He built a checkout donation optimizer that handled about 3B transactions a year, ran in under 30ms, and lifted donations by about 50%, then designed tenant-safe analytics and support chatbots for regulated data.

    Experience

    12 years

    Availability

    Full-time

  • Francisco

    DevOps

    Netherlands/(GMT +1:00)

    Francisco is a DevOps engineer focused on Azure, Azure DevOps, Bicep, and Docker who modernized a multinational’s delivery platform, moving legacy pipelines to Azure, cutting environment setup from days to under an hour, and raising deployment frequency by 400%+. He also built a self-serve travel platform end to end with Next.js, FastAPI, Postgres, and CI/CD.

    Experience

    6 years

    Availability

    To be verified

  • Donald

    Game Developer

    United Kingdom/(GMT)

    Donald is a Unity and C# game programmer focused on multiplayer physics, from a 32-player mobile party game to custom networking for co-op and survival titles. He shipped the top-performing level on one live game, then led its level-tooling overhaul to unblock designers and cut repetitive work.

    Experience

    7 years

    Availability

    To be verified

  • Chris

    AI Engineer

    United States/(GMT -5:00)

    Chris is an AI engineer and fractional CTO who builds Python and LangChain systems for regulated domains. He shipped a healthcare voice agent in 2 weeks, designed multi-agent RAG workflows for clinical and tax data, and has led platform relaunches, hiring, and SOC 2 prep for early-stage products.

    Experience

    12 years

    Availability

    Part-time & Full-time

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Developers who got their wings at

How it works

How to hire a CTO in days, not months

1

Fill in a short form

Tell us about your project, timeline and hours, then look through our vetted CTOs.

2

Take a 30-minute call

A Lemon.io matching expert goes over your needs and gives you a budget estimate.

3

Meet 1–3 candidates

You get 1–3 CTO profiles, usually within 24 hours. Interview them the way you normally would.

4

Start working

Your CTO joins your team part-time or full-time and works directly with you.

Testimonials

Start to finish in under a week with zero wasted time

Reached out on Monday evening, connected Tuesday morning, had four qualified candidates by Wednesday.

Brian DeSpainBrian DeSpainCEO, 10X ERP
High quality, well-qualified developers

We had an excellent experience. Process is fast from the initial intake through setting up payment.

Katie RoyKatie RoyExecutive Director, The SPEND Initiative
7 developers hired in 24 hours

The developers helped us speed up. They quickly learned their part of the app and we’re grateful for their contribution.

Conor MackenConor MackenDirector of Engineering, tvScientific

Define the CTO role, check rates, then hire

Lemon.io does the hiring work. You pick the CTO.

We vet every CTO

Every CTO passes a live interview with a senior technical leader. We accept 1.2% of applicants.

Ex-PayPal, Meta, Uber

We hand-pick your matches

A matching expert picks people by your stack, domain and time zone, and tells you why each one fits.

Human, not a filter

We handle the paperwork

We handle contracts, NDAs and invoices. You pay Lemon.io, and we pay your CTO.

You own the IP

We stay after you hire

Your Lemon.io manager stays in touch with you both. If it doesn't work out, we find a replacement for free.

Free replacement

The lemon tea

Hire a CTO who can take ownership

Hiring a CTO starts with figuring out what you need them to fix. Maybe releases keep slipping. Maybe your engineers need stronger leadership. Maybe technical debt is catching up with you, or you need an expert investors can trust with the technical side of the business.

Why hire CTO

What can a CTO help you with?

A CTO should remove technical uncertainty from decisions that affect the whole business. Depending on your stage, that can mean getting your first product shipped, scaling the engineering team, or fixing problems that are slowing development down.

Get a product shipped

urn business priorities into a technical roadmap, choose an appropriate stack, remove delivery bottlenecks, and keep engineering focused on what needs to reach users first.

Scale the engineering team

Decide which roles to hire, interview senior engineers, introduce clear ownership, mentor technical leads, and build processes that still work as the team grows.

Fix technical debt

Identify which parts of the system are slowing the business down, prioritize remediation, and avoid turning every legacy problem into an expensive rewrite.

Make strategic AI decisions

Evaluate where AI can improve the product or engineering workflow, choose models and vendors, assess data and infrastructure requirements, and prevent AI experiments from becoming expensive distractions.

Case studies

Aerospace

The experience with Lemon.io has been fantastic. The interview process has been good, the caliber of people – excellent and integration has been very smooth.

Marc Horowitz
Marc HorowitzCOO of SkyFi
Explore case
Telecommunications

We needed extra developers to clean off all these bugs so the company could skyrocket.

Conor Macken
Conor MackenDirector of Engineering
Explore case
AI

We needed extra AI engineers to keep our ambitious project running.

Mike Lukiman
Mike LukimanFounding Senior Software Engineer at Everstar.ai
Explore case

Frequently asked questions

How do I hire a CTO with Lemon.io?

Register on Lemon.io, share what you’re looking for, and we’ll take it from there. We introduce you only to vetted candidates who meet your requirements. Our network of senior tech leaders is just a message away, and every candidate is assessed through test tasks that simulate real-life scenarios and high-pressure situations.

How much does a CTO cost?

It depends on the format and level of involvement you need. A full-time CTO typically runs $12K–$30K+ per month and owns your entire tech strategy end-to-end.

A part-time CTO — a few days a week — ranges from $5K–$15K and suits early-stage startups that need guidance without full leadership.

If you have a specific bottleneck to solve, a fractional CTO is the most cost-effective option at $3K–$10K per month.

What are the key responsibilities of a CTO in a startup?

A startup CTO wears many hats — from defining tech architecture and managing the engineering team to aligning technical decisions with business goals and investor expectations. They control the engineering budget, make build-vs-buy calls, and keep the tech stack lean and cost-efficient.

On the people side, they hire, mentor, and retain top engineering talent.

In 2026, a big part of the role also means orchestrating AI adoption — knowing where it creates value, where it introduces risk, and how to communicate both to the rest of the business.

How quickly can I hire a CTO through Lemon.io?

You can hire a CTO through Lemon.io quickly—in 48 hours, we will find a candidate who meets your requirements. We provide a comfortable hiring process for our clients because our community consists of pre-screened senior tech talent.

The CTO who joined our community has already passed several vetting stages: VideoAsk, completion of their me.lemon profile, a screening call with our recruiters that includes various technical questions, and a technical interview with our developers.

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