Who I am & what I do

Julien 'Lta' Ballet

DevOps Engineer / Epitech ’09 / ex-Facebooker
I help tech startups to define, setup and grow their infrastructure and processes.

Whether it’s your development infrastructure and processes, ensuring your dev team can easily and safely ship the last killing feature of your app, or your production infrastructure, to handle the quickly growing flow of customer your product deserves, infrastructure is a key component of your business ! I’ll make it safe, available and scalable using a state-of-the-art tech stack.

Let your devs focus on building your apps, let yourself focus on growing your business and let me take care of your infrastructure needs.

Picture of my face


What I'm good at


I am comfortable with any cloud provider (AWS, Azure, Openstack based, …) or bare metal

App hosting

Web app, API server, or traditional server software: I can automate build, test, deploy and scale it.


I proactively report about my work, and provide you with options and guidance for the next steps


System’s down ? I’ll bring it back up in no time ! Performance issue ? I’ll find the bottleneck and remove it !

Custom solution

You have a complex problem ? Specific constraints ? I’ll write down the software you need to make it work


Although it’s not my only tool, I’ve been managing the world’s largest chef deployment, so it’s one of my power tools


I work with cool companies

Although I’ve work with companies ranging from seed-stage startups to multinational corporations, I tend to thrive in smaller environments. Here’s a sample of the companies I enjoyed the most working with:

We Digital Garden

Designers & Makers for the new economy – Digital agency


One of the world’s leading specialists in print on-demand textiles and accessories.


Augmented reality chat app


Shop the finest Parisian boutiques, from home.
All the company logos are the property of their respective owner. Their presence in this list does not constitute an endorsement.


Don't take my word for it

Enzo Finidori

CTO & Co-Founder – Teezily
It is really pleasant to work with Julien, both on the human and technical level. His skills cover a wide range from assembly code to high level programming languages through system administration. When I face a crucial problem on my production servers, he’s the first one I contact due his calm and rapid analysis that enables him to address the matter. As an engineer I can say with no doubt: He’s part of the very few that we look up to.
Picture of Gael COAT, CTO and tech advisor of a few startups


CTO & Co-founder Paris.shopping, CS Teacher, Tech advisor
Julien is one of the most talented Engineer I have ever worked with. He is not only a sharp technician, he also got a deep understanding of business-related impact of IT solutions and infrastructures which always made him a really smart advisor, able to detect and analyse opportunities and risks in a very accurate way.
I sincerely endorse him for any strategic jobs which require a heavy technical background and a good ability to understand complex business issues.


That’s how I work

You need reliable partners to succeed. Our goal here is to build a strong relationship based on transparency and trust. This is a core value of my business and at the core of how I work with my customer. But trust doesn’t just happen, it needs time and good communication to grow. This requirement is at the root of the process I recommend to my customers:

Initial call

This informal first contact, which usually last between 30 to 60 minutes, is an opportunity for me to learn about you, your business and most important or immediate concerns. You will also answer all your questions. At the end of the call we should be able to evaluate if we’re a good fit for each other.


If some financial evaluation or technical exploration was needed by your particular situation, I usually get back at you within 1 or 2 day(s) with the relevant data

Trial period

Our goal is to build trust and a short (2-5 days) trial period is a great way to start. On most projects, this is enough time for me to deliver value and for us to realise if we’re a match.

First iteration

Rome wasn’t built in one day ! We’ll start by defining clear goals for a first iteration based on your priorities, and I’ll start working on it. I will proactively report about my progress on the way


At the end of the iteration, we’ll start putting your newly crafted solution into production, fix what needs to be fixed and give doc, training or accesses to your team members. We’ll also start to gather data and feedback to make it even better !

Rinse, repeat !

Innovation is a constant process and infrastructure is never perfect. From now on, we can move on to your next priorities, use data and feedback to continuously improve your infrastructure and processes. Or we can go to maintenance mode ! It’s up to you !


That’s how I eat

Open Source

350per day
  • Only for OpenSource project or work
    Either your main product is OpenSource software, or the code I will be producing will be released under an OpenSource license. Call me to discover if you qualify.
  • Can mix with other pricing
    If only some part of the work concerns an OpenSource project or will be released under an OpenSource license, only that part will be billed with the discounted pricing
  • Everybody wins
    OpenSource is great for everybody. It's great for the engineering community at large, to promote your company's engineering culture and to promote my own skill.
Risk Free !

Trial period

399per day
  • Only for early stages startup
    Typically for young bootstrapped companies with low revenue or pre-seed/seed stage startups.
  • 2-5 days
    Depending on your project and constraints, we will discuss the appropriate trial period during our initial call. It usually never exceeds 5 days.
  • Money back guarantee
    At the end of the trial period, if you are not satisfied with my services and decide not to continue working with me, you won't have to pay me. But... I will keep the property of any work that was made during the trial.

Early stage

499per day
  • Only for early stages startup
    Typically for young bootstrapped companies with low revenue or pre-seed/seed stage startups.
  • Billed bi-weekly or monthly
    Payment within 15 days max


800per day
  • For everybody else
  • Billed bi-weekly or monthly
    Payment within 15 days max

Managed infrastructure

  • Complete outsourcing
  • Worry-free packages

Advanced consulting

1,500per day


Let's start a project together!



Call me

🇫🇷 +33 7 68 16 42 96

🇺🇸 +1 (949) 424-2423

My location

Montpellier, Occitanie, France

Business time

Mon – Fri

  • 10.00 – 19.00 (CEST)
  • 07.00 – 12.00 (PDT)