Papercup • London

Senior Full Stack Engineer

Employment type:  Full time

4 days/week at home

Fully flexible hours

Dog friendly

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Job Description

Your mission

We’re on a mission to make the world's videos watchable in any languagePapercup uses AI to dub videos into other languages using the most human-sounding synthetic voices you've ever heard. Leaders in entertainment, news, and enterprise, such as Jamie Oliver, Business Insider and Bloomberg, use Papercup daily to leap language barriers and engage more deeply with their international audiences.

Last year alone, over 350 million people watched videos translated by Papercup. But this is just the start - billions of hours of video are stuck in a single language - our technology will fundamentally change that and make videos watchable in any language.

We’re more than just an AI startup - we also care deeply about our people. We want people to feel fulfilled, rewarded and genuinely happy at Papercup. That’s why creating and fostering the right culture matters to us and why we’re committed to building a company that people are proud to work for.

If you want to work on a game-changing technology and you care about working with a fun, smart and humble team, we’d love to hear from you.

Your profile

We are looking for someone passionate about technology and enjoys the challenges of working in a fast-paced start-up environment.

You should have a strong commitment to quality, a collaborative work ethic, and a keen attention to detail. In addition, you should have the ability to manage multiple tasks and deadlines, and be able to adapt to changing priorities.

If you are enthusiastic about the chance to help shape the future of our technology and product, we would love to hear from you.

In addition to your core responsibilities, you will collaborate closely with our Machine Learning team. Your role will involve translating AI research into practical, real-world applications. This includes integrating the latest models into our services, ensuring their seamless operation, and contributing to the ongoing improvement and evolution of these models based on real-world feedback and performance data. This is a unique opportunity to work on cutting-edge AI technologies and to see your work have a direct impact on our services and users.

What we are looking for from you:

  • Experience: 4 + years in software engineering, 1+ years in leading, preferably in a fast-paced start-up environment.
  • Technical Skills: Strong understanding of software development principles, with experience in TypeScript/Go/Python and modern cloud environments such as AWS/GCP/Azure.
  • Project Management: Demonstrated ability to manage complex engineering projects and deliver high-quality results within deadlines.
  • Collaboration and Communication: Excellent interpersonal and communication skills, with the ability to collaborate effectively with individuals from different disciplines and communicate technical concepts to non-technical stakeholders.
  • Adaptability and Initiative: Thrives in a dynamic start-up environment, adapts to changing priorities, and takes initiative to drive innovation and continuous improvement.
  • Passion for AI and Localization: Genuine interest in artificial intelligence, machine learning, and technology for language barriers and global accessibility to content.

Engineering at Papercup:

  • Don’t stick to specific dogma. We don't believe there is a single solution or methodology that fits all companies. At Papercup we study different solutions, and adapt them to our use case.
  • Everyone is a problem solver. If you have an idea for a better system or process, then you have a voice. We all participate in discussions by proposing and commenting on RFCs. You can, and should help build out our development practices.
  • We are all geeks.We all love learning and trying out new tools, learn new techniques. Some of the events we host to foster a learning culture are:
    • Papercup University - every two weeks a member of the team presents to the whole company a topic they are passionate about, we had interesting sessions on: Juggling, Phonetics, Etymology, How media industry works and more
    • Papercup Tekhnikum - every two weeks an engineer does a workshop or a presentation on relevant topic to the team, previous sessions included: no-code solutions, and intro to kubernetes.
    • Learning Week - you can take a week a year to spend time learning about topics that are relevant to them.
    • Developer Meetings - every week we meet to discuss technical issues we are facing, process improvements, outcomes of learning hours (demos) and interesting new libraries or dev tools
  • No silos, everybody works with everybody. All teams work together to help to improve each other's processes.

Our Tech Stack:

Infrastructure: AWS (VPC, EKS, RDS, Lambda, S3), Dagster, , Sentry, Vercel, Auth0, RedisLabs, CircleCI, helm, Docker, Airbyte
Languages: Go, TypeScript and Python
Database: Postgres, MySQL, BigQuery
Tools: Notion, Shortcuts, Metabase, Grafana

Why us?

Why you should consider us?

  • We are not a traditional web development company, we work with heavy media files and GPU instanced machines. All this, comes with challenges that we find exciting to solve.
  • As an engineering team, we have a lot of trust and autonomy within the company to invest time into our infrastructure, code and tooling.
  • This was written by Engineers/ChatGPT, so you know
  • We really care about our people - culture matters deeply to us and we are committed to building a company that people are proud to work for
  • We're growing fast. That means you can help grow the business from the ground up and maintain a lot of ownership

Apart from all this good stuff, what else do we offer?

  • Competitive salary of £100,000 depending on experience
  • Unlimited vacation policy
  • Hybrid working: flex between WFH and time in our Aldgate office (2 days per week)
  • Private medical cover or monthly wellness bonus
  • Learning budget and 'reading week' to carve out time to up skill in your domain
  • The usual food and fun perks: snacks, beer fridge regular team socials, annual offsite

Company benefits

Enhanced paternity leave – 4 months full salary
Unlimited annual leave
Enhanced sick pay
Teambuilding days
Teambuilding holidays
Dog friendly office
Enhanced sick days
Enhanced maternity leave – 4 months full salary
Equity packages
Skilled worker visas
Work from anywhere scheme – 30 days per year

The FlexScore® is the result of a rigorous 2-step verification of a company’s flexibility

First we assess the flexibility options Papercup provides and then we anonymously survey a statistically significant proportion of their employees to make sure Papercup is as flexible as they say they are. Our assessment is based on the six key elements of flexibility: location, hours, autonomy, benefits, role modelling and work-life balance.

We ask the hard questions so you don’t have to.

Working at Papercup

Company employees


Gender diversity (male:female)


Office locations

London - Aldgate

Funding levels

$20m Series A

Hiring Countries

United Kingdom

Awards & Achievements

Most flexible companies

Most flexible companies

Flexa100 2024
2nd – DeepTech, Data & AI

2nd – DeepTech, Data & AI

Industry awards 2023
Most flexible companies

Most flexible companies

Flexa100 2023
1st – AI & VR

1st – AI & VR

Industry awards 2022

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