# Rachel Black

> Solutions Engineer

Location: London, England, United Kingdom
Profile: https://flows.cv/rachelblack

Ex founder, and solutions engineer at Concordium.  Previously founder and CEO of HaloFi, an app that makes it easy to save and earn with stable tokens. We helped our community save over 5 million USD and gained 4k monthly active users. One of the first 5 app available with in the Opera Mini ecosystem.  Early Celo, Polygon and DeFi adopter. 

Prior to this I have over 6 years experience in development and developer relations. I love problem solving and making complex technology accessible. Experienced in building multi-cultural teams, fundraising, 0-1 product creation, community growth and full stack development.

## Work Experience
### Solutions Engineer @ Concordium
Jan 2025 – Present

### Co-Founder @ HaloFi 😇
Jan 2021 – Jan 2024
HaloFi is the easiest way to save in stable tokens on your phone. Deposit, set goals and earn.

### Developer Evangelist @ Twilio Inc.
Jan 2020 – Jan 2021 | Berlin, Germany
Developer Evangelist for Twilio based in Germany. Looking to speak to developer communities in Berlin, Germany and beyond.

### Dev Rel Lead @ 3Box
Jan 2019 – Jan 2020 | Berlin Area, Germany
Privacy on Web2.0 is broken, and web3 UX is terrible. 3Box provides the tools (storage, messaging, identity) for developers to build decentralized applications that users want to use while respect their privacy.

As Dev Rel lead, my role is to increase awareness of 3Box within the developer community and to provide insights to enhance the developer experience. Drop me a line if you are looking to improve the UX of your DApp, or are interested in hearing more about how a revolutionary new way to build privacy-centric applications.

### Tech Evangelist @ Lisk
Jan 2018 – Jan 2019 | Berlin Area, Germany
Currently I am a Tech Evangelist at Lisk, a blockchain application platform. Our mission is to accelerate the understanding and adoption of blockchain technology with an SDK (Sidechain Development Kit) written in JavaScript, the most widely used programming language in the world. By implementing sidechain technology into its blockchain network infrastructure, Lisk’s SDK enables developers to build powerful and scalable applications, including custom tokens. At the heart of Lisk’s mission lies education and ease-of-use. 

Lisk aims to become the go-to platform for developing decentralized applications. Lisk is headquartered in Zug, Switzerland and raised over 14,000 Bitcoins during its ICO in March 2016

### Tech Evangelist @ Lightcurve
Jan 2018 – Jan 2019 | Berlin Area, Germany
Lightcurve is a blockchain development studio and consultancy whose special focus is on coding, marketing and support of blockchain projects. Currently, the Lightcurve team is exclusively on the retainer of the Lisk Foundation, developing its network, technology, as well as leading marketing and community management.

### Frontend Developer @ Yoti Ltd
Jan 2016 – Jan 2018

### Application Engineer @ Flashtalking, Inc.
Jan 2016 – Jan 2016 | Leeds, United Kingdom
Full stack developer part of the video as a service team, currently working with React, Redux, JavaScript and AWS Lambda.

### Full Stack JavaScript Developer @ Founders & Coders C.I.C.
Jan 2015 – Jan 2016 | Bethnal Green
A member of the Founders & Coders training accelerator programme.

Founders & Coders provides the industry's leading training in full-stack JavaScript. FAC runs a 4-month full-time bootcamp taking people with no programming experience and helping them become full-stack developers by providing a platform for cooperative learning.

Technologies used:
- Javascript
- HTML
- CSS
- Node.js
- React
- Angular
- Redis
- MongoDB
- hapi
- GIT
- Jekyll
- TDD
- JQuery
- Bootstrap

Visit my github page at: https://github.com/RachBLondon

### UX Designer @ Homeshift
Jan 2015 – Jan 2015
Wireframing, 
User Research,
Prototyping.

### Product & Design Student @ Startup Institute
Jan 2014 – Jan 2014


## Education
### Bachelor’s Degree in Geography
University of Cambridge

### Woodhouse College


## Contact & Social
- LinkedIn: https://linkedin.com/in/rachblondon
- Website: http://www.rachblondon.com
- Website: https://github.com/RachBLondon
- Website: https://www.behance.net/Rachblondon

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Source: https://flows.cv/rachelblack
JSON Resume: https://flows.cv/rachelblack/resume.json
Last updated: 2026-04-05