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- Tasks: Build and maintain backend features for innovative SaaS applications using modern tech stacks.
- Company: Join a fast-growing tech company revolutionising critical industries with AI-powered solutions.
- Benefits: Competitive salary, share options, 25 days leave, private healthcare, and flexible working.
- Why this job: Make a real impact by solving complex challenges in essential industries with cutting-edge technology.
- Qualifications: Solid foundation in backend engineering; experience with Python, SQL, and APIs.
- Other info: Dynamic team culture with opportunities for growth and learning in AI development.
The predicted salary is between 28800 - 48000 £ per year.
We live in a world that runs on physical industries like energy, logistics, and manufacturing. These sectors are essential to our economy and daily lives, yet they are held back by inefficiencies, fragile legacy systems, and decades-old ways of working. This is not just a business problem; it is a societal one. When grids fail, supply chains stall, or factories falter, entire economies are disrupted. These companies face unique, complex challenges that typical software was never designed to solve. Cogna was founded to change this. Our mission is to give critical industries their own AI-powered Software Factory: a way to build and deploy bespoke digital tools that solve pressing operational challenges.
Since our launch in May 2023, we have seen incredible customer traction and revenue growth. We are backed by leading VCs, including Notion Capital and Hoxton Ventures, and we are building a world-class team to take on one of the most important challenges of our time. Tackling challenges at this scale takes people who are curious, adaptable, and motivated by impact. If our mission resonates with you, we encourage you to apply, even if your experience doesn’t match every requirement. We are committed to building a diverse team that reflects the industries and societies we serve.
Overview
Join a team that is redefining how software is built for critical industries. You will help build and maintain the backend services and integrations that power our SaaS applications, working with modern tech stacks and cutting-edge AI tools. This role is an opportunity to accelerate your growth: you will learn to build robust production systems and master AI-assisted development workflows, focusing on validating logic and delivering high-quality features that solve real-world problems.
What you’ll do
- Build and maintain backend features and API integrations (Python, FastAPI, SQL).
- Adapt and extend pipelines and front-end outputs, validating automated components.
- Build connectors for APIs, files, and external systems.
- Support the integration of LLM-based capabilities with robust evaluation and monitoring.
- Use AI-assisted development tools to scaffold, refactor, and test code.
- Collaborate with Solution Strategists, Data Platform, Platform and Support teams.
What we’re looking for
We don’t expect you to have deep expertise in all these areas. We look for a solid foundation in backend engineering and a strong curiosity to learn the rest.
- Python/TypeScript experience (1+ years or strong personal projects); understanding of SQL and data modelling.
- Familiarity with (or keen interest in) agentic AI coding tools (e.g., Cursor/Codex/Claude Code) to plan, scaffold, refactor, and test.
- Experience with APIs (REST) required. Exposure to other systems like SFTP, SharePoint, or webhooks is a plus.
- Interest in or exposure to workflow orchestration (Temporal, Dagster).
- Basic familiarity with git, CI/CD concepts, Docker, or cloud platforms (Azure/AWS/GCP).
- Interest in AI and raising team AI skills.
What we offer
- Competitive salary and share option plan
- 25 days annual leave, plus public holidays
- Excellent pension scheme, fixed at 7.5%
- Private healthcare, including family cover and pre-existing conditions
- Flexible hybrid working with 2 days per fortnight in our Farringdon office
- Regular social events and offsites
- Access to a gym and fitness classes in our office building
Junior Backend Engineer (App Delivery) in London employer: Cogna
Contact Detail:
Cogna Recruiting Team
StudySmarter Expert Advice 🤫
We think this is how you could land Junior Backend Engineer (App Delivery) in London
✨Tip Number 1
Network like a pro! Reach out to people in the industry, attend meetups, and connect on LinkedIn. You never know who might have the inside scoop on job openings or can refer you directly.
✨Tip Number 2
Show off your skills! Create a portfolio showcasing your projects, especially those involving Python, APIs, or AI tools. This gives potential employers a taste of what you can do and sets you apart from the crowd.
✨Tip Number 3
Prepare for interviews by brushing up on common backend engineering questions and coding challenges. Practice makes perfect, so consider mock interviews with friends or use online platforms to get comfortable.
✨Tip Number 4
Don’t forget to apply through our website! We’re all about building a diverse team, so even if you don’t tick every box, we want to hear from you. Your unique perspective could be just what we need!
We think you need these skills to ace Junior Backend Engineer (App Delivery) in London
Some tips for your application 🫡
Show Your Passion: When you're writing your application, let your enthusiasm for the role and our mission shine through. We want to see that you're genuinely excited about tackling the challenges in critical industries and how you can contribute to our AI-powered Software Factory.
Tailor Your Experience: Make sure to highlight any relevant experience you have, even if it’s from personal projects. We’re looking for a solid foundation in backend engineering, so connect your skills in Python, SQL, or APIs to the job description. This helps us see how you fit into our team!
Be Curious: We love candidates who are eager to learn! If you don’t tick every box in the requirements, don’t sweat it. Use your application to express your curiosity about AI tools and backend development. Show us how you plan to grow with us at StudySmarter.
Apply Through Our Website: We encourage you to apply directly through our website. It’s the best way for us to receive your application and ensures you’re considered for the role. Plus, it gives you a chance to explore more about what we do and our culture!
How to prepare for a job interview at Cogna
✨Know Your Tech Stack
Make sure you’re familiar with the technologies mentioned in the job description, especially Python, FastAPI, and SQL. Brush up on your knowledge of REST APIs and any relevant personal projects you've worked on. Being able to discuss your experience confidently will show that you're ready to hit the ground running.
✨Show Your Curiosity
This role values curiosity and a willingness to learn. Prepare examples of how you've tackled new challenges or learned new technologies in the past. Whether it’s experimenting with AI coding tools or diving into backend engineering, demonstrating your eagerness to grow will resonate well with the interviewers.
✨Understand the Company Mission
Cogna is focused on solving real-world problems in critical industries. Familiarise yourself with their mission and think about how your skills can contribute to this goal. Be ready to discuss why this mission resonates with you and how you can make an impact through your work.
✨Prepare for Collaboration Questions
Since the role involves working closely with various teams, be prepared to discuss your teamwork experiences. Think of specific instances where you collaborated effectively, resolved conflicts, or contributed to a team project. This will highlight your ability to work in a dynamic environment and adapt to different roles.
