See other companies on Otta


Cloud infrastructure and APIs for realtime data delivery

101-200 employees
  • B2B
  • Enterprise
  • Big data
  • API
  • Data Integration
London, UK

Company mission

To power and accelerate the real-time revolution.

Rocket List 2021
Top investors

-27% employee growth in 12 months

Otta's take

Theo Margolius headshot

Theo Margolius

COO of Otta

Ably's realtime APIs expose the entire Ably infrastructure to developers, making it easier to integrate real-time data flows and therefore to power functionality at any scale.

Developers are increasingly looking to utilise real-time data to facilitate new kinds of services e.g in the Internet of Things or monitoring stock prices. Introducing massive flows of realtime data has previously been technically difficult.

The company believes its product is set apart from other real-time platform-as-a-service providers because it features out-the-box products that are developer-friendly as well as secure.

The company expresses this developer-friendly approach through a variety of channels, including masterclasses as well as products like its unique offering of reliable message ordering. In 2023, it partnered with Netlify Integrations Hub.


  • Regular company away days and social events
  • A Cash Plan with SimplyHealth
  • Share options. We believe that all Ablyans should share in our success and growth
  • Dog friendly office for when you’re in the office!
  • A great company culture where every individual is valued and supported
  • We’ll support your professional development with a £1000 annual learning budget and up to 10% learning and development time
  • We’re remote first, so you can work flexibly in a way that fits your lifestyle. You’re also welcome to pop into our communal office space in Shoreditch, London if you want to collaborate in-person or socialise with the team
  • Fully-paid quarterly summits, where we take a few days to step back as a team and a company, to have some fun together and work on things we might not have time for day-to-day
  • Your choice of high quality tech kit to work on
  • Home workstation set up budget of £500, plus an annual top-up of £150
  • Weekly individual drinks and snacks budget
  • Private healthcare, 24/7 Employee Assistance Programme and life assurance
  • Access to private and confidential coaching with Sanctus
  • A monthly wellbeing budget with Juno
  • A matching pension contribution of 5%
  • Life Assurance and Income Protection with Canada Life
  • Financial Coaching with Octopus MoneyCoach
  • 27 days of paid annual leave plus a day off on your birthday (36 days including bank holidays)
  • 10 days of paid sick leave (including mental health days) per year

Company values

  • Open for all
  • Bias for action
  • Even the best do better
  • Tech needs humanity
  • Dependable by default
  • Bold creativity wins

Funding (last 2 of 3 rounds)

Jun 2021



Apr 2020




Total funding

This company has top investors


Founded easyBacklog and CTO/co-founder of Econsultancy. They are the technical advisor of Guild and are currently the Governing Board Member for OpenAPI Initiative.

Paddy Byers

(Chief Scientist)

Earned an MA in Mathematics and a Ph.D. in Theoretical Computer Science before pursuing a career as a software technologist including as a CTO at Tao Group and Founder of UbiApps.

People progressing

Joined Ably as an Intern back in 2017, as one of its first employees. They have been serving as the Head of Finance since November 2021.

Joined Ably as an Intern straight out of university. Took on Ably's developer documentation, and became the Developer and Technical Author. They have been promoted to DevRel Engineer in December 2021.

Joined as Business Development Manager, being promoted to Senior Account Manager after 1 year and again to Strategic Partnerships after 2 years. They have been promoted again to Sales Manager EMEA in April 2022.

Diversity & Inclusion at Ably

  • Some of the initiatives we have implemented in relation to hiring: 1) We've written guides for managers to help them to understand how they can hire for more diversity; 2) We've introduced gender coding for all job adverts; 3) We advertise on targeted job boards; 4) We work with agencies that specialise in hiring for diversity
  • To create an inclusive environment, we've introduced the following initiatives: 1) Enhanced maternity and shared parental leave; 2) Mental health: we have online counselling available to everyone, an EAP scheme, we have also hosted sessions on burnout and mental health with Spill, we also pay for mental health sick days; 3) We have given management training to understand how we can support and get the best out of diverse profiles; 4) Flexible working hours to fit around home commitments including childcare; everyone can work from home; 5) A clear code of conduct that has clear reporting for issues, such as for discrimination and sexual harassment, including having the ability to report anonymously
  • We also have an 'open-for-all' channel (one of our values) to share and learn how we can be better. An example initiative that came out of this channel, was removing non-inclusive terminology from our code bases:
  • We believe our differences as individuals is what makes us great. Our people are at the heart of what we do, and we encourage everyone to be their most authentic self at Ably: we see inclusivity and openness as fundamental to creating long-term success as an organization. We encourage applications from all backgrounds regardless of age, disability, gender, sexual orientation, parental status, race, religion, educational background or neurodiversity. Ably has an amazing opportunity ahead of us, and we want anyone to be able to contribute to that opportunity



Challenging work (3)

Open and honest communication (2)

Opportunities to learn (1)

Autonomy (1)

Nice people (1)

Intelligent people (1)

Flexible working (1)

Flat hierarchy (1)

Fair compensation (1)

Ably 1Ably 2Ably 3