Senior Backend Engineer - Profitable SaaS | TypeScript, NodeJS, AWS
Senior Backend Engineer - Profitable SaaS | TypeScript, NodeJS, AWS

Senior Backend Engineer - Profitable SaaS | TypeScript, NodeJS, AWS

City of London Full-Time 60000 - 84000 £ / year (est.) No home office possible
J

At a Glance

  • Tasks: Join us to tackle complex data challenges and improve our core product.
  • Company: Jelly is revolutionising food business operations with a profitable SaaS solution.
  • Benefits: Enjoy 33 days holiday, hybrid work, equity options, and team dinners at restaurants.
  • Why this job: Be part of a growing company where your contributions directly impact users and outcomes.
  • Qualifications: Proficient in TypeScript, NodeJS, and experienced with serverless infrastructure and databases.
  • Other info: Visa sponsorship available; apply by sharing a real data tradeoff you've made.

The predicted salary is between 60000 - 84000 £ per year.

Profitable VC-backed SMB SaaS | 1–3 % equity | UK visa sponsor | Build core product used by 500+ restaurants

About Jelly

Jelly is rebuilding the operating system for food businesses from the ground up. Kitchens in Michelin stars, pubs, cafes and hotels still run core ops on pen & paper; we give them a modern operating system. 500+ sites use Jelly today and we’re profitable.

Why Now

Jelly’s profitable and demand is outpacing what we can ship. We’re investing in stronger foundations to unlock more velocity, but we’re stretched. This is the moment for you to help us move faster, raise the bar, and shape how we build as we grow.

The Mission

Take real ownership, work with the founder and engineering team to tackle complex data challenges at the heart of our product, improving the product and the codebase as we scale.

You’ll Work With

  • Founder (product)
  • Engineers (shipping code)
  • Part-time Designer (UI/UX)
  • Customer Success Manager (Insight)

You might be a fit if:

  • You’ve shipped real things and dealt with their consequences
  • You’ve worked in small teams and like solving problems end to end
  • You know when to refactor and when to move on
  • You care about users and outcomes more than abstractions
  • You want to grow with a company, not just do a tour of duty

What You’ll Get:

  • Real ownership from day one
  • £70–90k depending on experience
  • Significant equity (1–3 %) and long-term career upside
  • A culture that values engineers, with protected time for cleanup and craft
  • 1-on-1 with founder; access to roadmaps
  • 33 days holiday, Hybrid London (Bank), Visa sponsorship available
  • Fortnightly team dinners at customer restaurants

Minimum requirements:

  • Proficient in TypeScript and NodeJS
  • Strong experience with containerised and serverless infrastructure (e.g. ECS, Lambda)
  • Confident working with GraphQL APIs, performance optimisation, and data design
  • Expertise in relational databases, especially PostgreSQL, including performance tuning
  • Exposure to or interest in AI technologies, including personal or side projects

Bonus preferences:

  • PostgreSQL features, triggers and stored procedures
  • Experience with strictly typed languages such as GoLang
  • Experience with AWS solutions and services including ECS, Lambda and RDS
  • Experience with NoSQL and big data
  • Experience with Nexus GraphQL
  • Implementing AI APIs in an ETL pipeline or similar workflows

Interview process:

  • Stage 1: Quick intro call with founder (15min)
  • Stage 2: Technical interview (2 hours) on a real problem
  • Stage 3: Conversation with team + founder (2hrs)

Apply here or DM me (JJ) on WhatsApp +447855553652 with a real data or system tradeoff you’ve made under pressure and what you’d do differently now.

https://getjelly.notion.site/senior-backend-engineer-jelly

Senior Backend Engineer - Profitable SaaS | TypeScript, NodeJS, AWS employer: Jelly

At Jelly, we pride ourselves on being an exceptional employer, offering a unique opportunity to work at the forefront of innovation in the food industry. Our culture fosters real ownership and collaboration, with direct access to the founder and a commitment to employee growth through protected time for craft and cleanup. With competitive salaries, significant equity options, and a generous holiday allowance, plus the chance to enjoy team dinners at our customer restaurants, we ensure that our team members thrive both professionally and personally in our vibrant London setting.
J

Contact Detail:

Jelly Recruiting Team

StudySmarter Expert Advice 🤫

We think this is how you could land Senior Backend Engineer - Profitable SaaS | TypeScript, NodeJS, AWS

✨Tip Number 1

Familiarise yourself with Jelly's mission and the specific challenges they face in the food industry. Understanding their product and how it impacts users will help you articulate your thoughts during the interview.

✨Tip Number 2

Prepare to discuss your past experiences with TypeScript and NodeJS, especially any projects where you've had to make critical decisions under pressure. This aligns well with their focus on real ownership and problem-solving.

✨Tip Number 3

Brush up on your knowledge of AWS services, particularly ECS and Lambda, as well as PostgreSQL performance tuning. Being able to speak confidently about these technologies will demonstrate your fit for the role.

✨Tip Number 4

Think of a real data or system trade-off you've made in your career and be ready to share it during the interview. This will show your ability to reflect on your decisions and learn from them, which is crucial for the role.

We think you need these skills to ace Senior Backend Engineer - Profitable SaaS | TypeScript, NodeJS, AWS

Proficiency in TypeScript
Strong experience with NodeJS
Containerised infrastructure knowledge (e.g. ECS, Lambda)
Experience with GraphQL APIs
Performance optimisation skills
Data design expertise
Proficient in relational databases, especially PostgreSQL
Performance tuning for databases
Familiarity with AI technologies
Experience with strictly typed languages (e.g. GoLang)
Knowledge of AWS solutions and services
Experience with NoSQL databases
Understanding of big data technologies
Experience with Nexus GraphQL
Implementing AI APIs in ETL pipelines

Some tips for your application 🫡

Tailor Your CV: Make sure your CV highlights your experience with TypeScript, NodeJS, and AWS. Include specific projects where you've tackled complex data challenges or worked in small teams, as these are key aspects Jelly is looking for.

Craft a Compelling Cover Letter: In your cover letter, express your passion for building products that improve user outcomes. Mention any relevant experience with containerised infrastructure and GraphQL APIs, and how you can contribute to Jelly's mission.

Showcase Relevant Projects: If you have personal or side projects related to AI technologies or performance optimisation, be sure to mention them. This will demonstrate your proactive approach and interest in the field.

Prepare for Technical Interviews: Review your past experiences with real data or system trade-offs. Be ready to discuss these during the technical interview, as Jelly values candidates who can reflect on their decisions and learn from them.

How to prepare for a job interview at Jelly

✨Showcase Your Technical Skills

Be prepared to discuss your proficiency in TypeScript and NodeJS. Bring examples of projects where you've used these technologies, especially in a containerised or serverless environment. This will demonstrate your hands-on experience and ability to tackle real-world problems.

✨Understand the Company’s Mission

Familiarise yourself with Jelly's mission to modernise food business operations. Be ready to discuss how your skills can contribute to this goal and share any relevant experiences that align with their vision of improving product and codebase as they scale.

✨Prepare for Technical Challenges

Since the technical interview involves solving a real problem, practice coding challenges that focus on performance optimisation and data design. Brush up on your knowledge of GraphQL APIs and relational databases, particularly PostgreSQL, as these are crucial for the role.

✨Engage with the Team

During the conversation with the team and founder, show your enthusiasm for collaboration. Discuss your experiences working in small teams and how you approach problem-solving. Highlight your willingness to take ownership and grow with the company, which aligns with their culture.

Senior Backend Engineer - Profitable SaaS | TypeScript, NodeJS, AWS
Jelly
J
  • Senior Backend Engineer - Profitable SaaS | TypeScript, NodeJS, AWS

    City of London
    Full-Time
    60000 - 84000 £ / year (est.)

    Application deadline: 2027-06-16

  • J

    Jelly

Similar positions in other companies
UK’s top job board for Gen Z
discover-jobs-cta
Discover now
>