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Olly Rennard

Olly Rennard

Mentor
5.0
(18 reviews)
US$30.00
For every 15 mins
32
Sessions/Jobs
ABOUT ME
A senior software engineer with 10 years of experience
A senior software engineer with 10 years of experience

I'm a software engineer with 10+ years experience of making things and solving problems. I've worked across traditional fullstack website development, game development, VR apps, cross platform psychometric assessments, data analysis, and data science. I love working somewhere where I can make a difference and get involved in product direction. Right now I'm looking for my next adventure so feel free to reach out to me!

English
London (+01:00)
Joined January 2024
EXPERTISE
JavaScript
10 years experience
I've worked with Javascript for a long time now, from Jquery through to Node.js, React, Next.js & React native. I've built modern fronten...
I've worked with Javascript for a long time now, from Jquery through to Node.js, React, Next.js & React native. I've built modern frontend applications and SPAs, Node backends, Lambda microservices and mobile apps.
Lambda functionsNode.jsReact
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Lambda functionsNode.jsReactReact NativeNext.jsExpress.jsTypeScript
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Python
8 years experience | 2 endorsements
Most of my Python experience is with backend development, primarily using Django, and scripting, e.g. web scraping, data processing, etc....
Most of my Python experience is with backend development, primarily using Django, and scripting, e.g. web scraping, data processing, etc. I've also got experience writing Lambda functions and building GUI apps
PandasData ScienceLambda functions
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PandasData ScienceLambda functionsAPIBack-EndFull StackWeb ScrapingScrapyFlaskDjango
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React
6 years experience | 3 endorsements
AWS
5 years experience | 2 endorsements
Node.js
7 years experience | 3 endorsements
Django
6 years experience | 1 endorsement
React Native
4 years experience

REVIEWS FROM CLIENTS

5.0
(18 reviews)
Chris Westbrook
Chris Westbrook
April 2025
He was awesome. Will definitely be using him again.
Reece Sim
Reece Sim
March 2025
Olly was great, super helpful and knowledgeable
Chris Westbrook
Chris Westbrook
March 2025
The session went very well. He really knows his stuff and was a pleasure to work with. Will definitely be using him again.
Rohan Sonar
Rohan Sonar
January 2025
I had a really good session with Olley. He helped me resolve the AWS issue which I was struggling with for a while. I liked his approach towards understanding the issue and would like to highly recommend him for any technical troubleshooting..
Jeanie Jin
Jeanie Jin
December 2024
Olly was a brilliant mentor. He explains concepts really well and is a great communicator
Scott Campbell
Scott Campbell
September 2024
Olly is absolutely fantastic! I inherited an extremely complex codebase, with some really funny design decisions, and Olly was able to walk me through it, learning quickly on the fly, and mentoring me as I added a new component to the code. Great bedside manner, great at translating difficult concepts into English.
larry rozins
larry rozins
August 2024
Spoke to Olly regarding career and industry guidance. He was extremely helpful, clear and brought tons of experience and insight, and was a pleasure to speak to. My path forward is now much clearer. Thanks Olly!
Sunitha Pillai
Sunitha Pillai
August 2024
Thank you Olly I was able to resolve my issues with the layout. Great to work with you!
worksol
worksol
August 2024
Olly's great! We built an entire AWS infrastructure, complete with lambda calls and SES buckets, in 90 minutes.
worksol
worksol
August 2024
Olly is a knowledgeable guide for using AWS. I will soon work with him again!
EMPLOYMENTS
Software Engineering Consultant
Freelance
2024-07-01-Present
- Advised a social media startup on how to scale their infrastructure and acted as tech lead - Designed and supervised the infrastructure...
- Advised a social media startup on how to scale their infrastructure and acted as tech lead - Designed and supervised the infrastructure for a medical platform in partnership with a university
Git
Flask
Testing
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Git
Flask
Testing
Pandas
Web Development
NLP
Confluence
Object-Oriented Programming
System design
Computer Troubleshooting
SDLC
AWS Lambda
Cloud Services
Web Technologies
Data Pipelines
Distributed Systems Design
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Senior Fullstack Engineer
Co-op
2020-09-01-2024-07-01

- Designed, built, and maintained a suite of internal tools and platforms which provided turnkey implementations of common problems, c...

- Designed, built, and maintained a suite of internal tools and platforms which provided turnkey implementations of common problems, chiefly written in Python or Typescript, enabling engineering teams to move quicker and the business to save over £100,000 per year - Managed a large AWS microservices infrastructure, in addition to our inter-team Kubernetes solution, all managed by Terraform - Guided projects from stakeholder discussions and user story creation to delivery of reliable solutions - Mentored junior engineers in technical skills and interpersonal development

Python
TypeScript
Kubernetes
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Python
TypeScript
Kubernetes
Terraform
DevOps
AWS
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Full Stack Engineer
Recourse
2019-12-01-2020-09-01

- Worked directly with the CEO and CTO to conceptualise and define the founding product, taking these requirements from high level epi...

- Worked directly with the CEO and CTO to conceptualise and define the founding product, taking these requirements from high level epics to a feasible architecture, and implementing said architecture as a scalable web app using Django, React, and Unity engine - Actively driving discussions at every level of the business, including strategy, branding and process - Managed the full development workflow, including: a Django backend, React and TypeScript frontend, a Unity C#/WebGL integration, API design, server configuration, and deployment processes

C#
Django
TypeScript
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C#
Django
TypeScript
React
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PROJECTS
Sourd'oh - An AI mobile app to help you bake better bread
2023
Sourd'oh is my latest project. Borne of my love of baking bread and my frustrations with getting it wrong. I'm building an app that uses ...
Sourd'oh is my latest project. Borne of my love of baking bread and my frustrations with getting it wrong. I'm building an app that uses computer vision and large language models to identify issues with users' bread and help them diagnose what's wrong it.
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15mins - A livestreaming app with 500+ active users
2022
15mins is a social livestreaming app designed around the idea that only a single person could livestream to the platform at any one time....
15mins is a social livestreaming app designed around the idea that only a single person could livestream to the platform at any one time. Built on an AWS hosted backend, using Django, noSQL databases, React Native, and microservices.
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