Greg Goltsov

Greg Goltsov

Data Innovation Expert / International Speaker

I combine 7+ years of architecting, developing and delivering data products through combination of data engineering and data science.

My diverse industry experience spans designing and implementing pragmatic data analytics solutions — operating either as a single expert, or as a tech lead for a team. Currently, I’m applying these skills as a Data Consultant at a Citi’s Innovation Lab in London.

I’ve developed data solutions for major companies.

Citi Innovation Lab
Citi Innovation Lab

Citi’s internal startup incubator.

Appear Here
Appear Here

World’s largest online marketplace of short-term retail space.

Touch Surgery
Touch Surgery

World’s largest community of surgeons operating online.

My toolbox

  • Major languages: Python, Clojure/ClojureScript, SQL, Bash
  • Technologies: PostgresSQL, PySpark, AWS Redshift, AWS S3, Pandas, Scikit-learn, ElasticSearch, Re-frame, Reagent, Django, Flask, D3.js, Emacs, Vim, Ansible
  • I also have experience developing in: Ruby, JavaScript, C#, C, C++, Java, Matlab

My processes

  • Large organisations, companies and startups alike, often rely on a myriad of data services, which means essential information is spread across disparate silos. In order to make informed or holistic decisions, data should be consolidated into a ‘single source of truth’ – using robust and reliable processes.
  • A lot of current manual reporting can be automated. This frees up valuable resources and can unearth never-before-seen insights.
  • There are opportunities for all companies to benefit by building data products, dashboards and ultimately moving towards cutting-edge approaches, such as machine learning and predictive analytics. These tools give an enormous competitive advantage.

Working with me

  • I think laterally to provide creative, innovative and holistic solutions.
  • I show leadership skills through championing Scrum and other productivity techniques.
  • I am a self-starter who can organise and manage whole projects delivered alone or within a team structure.
  • I am approachable to colleagues and share information and progress readily.

Talks I’ve given

I’m a passionate speaker on a variety topics from data processes, full-stack development to team empowerment and efficiency. Here are some talks I’ve delivered to both companies and AI and ML meet-ups.

Seeing at the speed of thought

Full-stack Data Science: How to be a One-Person Data Team

Extracting the Meaning: Painless Processing and Analysis of Image Data with Fiji and Ruby

Scalable agent-based simulations: a blood clotting demonstrator

Kuranku — Procedural Game Pipeline


This is what people I have worked with say about me.

“We threw Greg a complex task under unusual circumstances and he proved himself to be knowledgable, clued-in and always results focused.He is a great team-player but also a self-directed problem solver. He knows his tools and he gets started without hesitation.”

Dave Nolan

CTO at Appear Here

“Lateral, dynamic thinker, passionate, crazy-talented awesome individual.”

Dr Jean Nehme

co-founder of Touch Surgery

“Greg was one of our first employees at Touch Surgery, and I can truly say that working with him was incredible. Greg brings incredible dedication and energy to all the products that he works with.

He has a wide knowledge base, and has a knack of finding the right technical solution for difficult problems. He is also very forward-thinking, and always considers how to make his solutions scalable in the future.If you ever get the opportunity to work with Greg — I would grab it with both hands!”

Dr Andre Chow

co-founder of Touch Surgery

“Passionate and really smart, Gregory’s set of both IT and non IT skills make him a first choice engineer. He always puts lot of energy in effort in his work, trying to reach results beyond requirements and always want to learn more (he shows a real interest in Clojure for instance)!His ability to integrate and work in a team, complete his technical side. I would definitely recommend Gregory.

I’ve worked on projects with many developers, and Greg is certainly one of my favourites.As someone with relatively little understanding of technology, Greg helped me deepen my knowledge of complicated concepts while presenting all information necessary to make informed decisions.

He is a great guy to have in the house!”

Guillaume Agis

Freelance Android Developer

“He has a truly unique curiosity. He seeks to gain a full understanding of how systems work in order to create the best solution given the project requirements, as well as outline how it could be improved in the future.When I have a question regarding technical stack, he is always one of the first people I go to.”

Matthew Eisner

Digital Marketing Consultant