Senior Software Engineer (Full Stack)

JR United Kingdom; City Of London; Hybrid; GBP 70,000 - 90,000; Full time

Job summary

A leading company is seeking a Senior Software Engineer (Full Stack) to join their team in London. You will own projects, work closely with the engineering team, and have opportunities for significant equity and career growth. This role demands a candidate with strong skills in Typescript, React, AWS, and a full ownership mindset.

Benefits

1-on-1 with founder

Significant equity (1-3%)

33 days holiday

Hybrid working

Fortnightly team dinners at customer restaurants

Qualifications

• Experience shipping and maintaining production-level software.
• Deep understanding of front-end and back-end usage.
• Ability to collaborate with non-technical team members.

Responsibilities

• Take real ownership and ship weekly.
• Collaborate with founder and engineering team.
• Improve the product and codebase as we scale.

Skills

Typescript

React

AWS

GraphQL

PostgreSQL

Strong communication

Testing culture

Education

4+ years commercial experience

2+ years in SaaS

Job description

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Senior Software Engineer (Full Stack), london (city of london)

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Client:

Jelly

Location:

london (city of london), United Kingdom

Job Category:

Other

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EU work permit required:

Yes

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Job Views:

2

Posted:

16.06.2025

Expiry Date:

31.07.2025

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Job Description:

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 ship weekly, learn from users, and improving the product and the codebase as we scale.

You’ll Work With

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

* 4+ years commercial experience shipping and maintaining production-level software

* Typescript & React: deep understanding of both front-end and back-end usage

* AWS: experience running live production workloads (we use ECS, RDS, Lambda, SQS, VPC)

* GraphQL: built and consumed APIs at scale

* PostgreSQL: confident writing queries, designing schemas, and shipping DB changes without downtime

* Strong communication: able to collaborate clearly with non-technical team members

* Latest tooling: we use AI and computer vision to speed up internal data workflows

* 2+ years in SaaS: ideally in products used by SMEs or operational teams

* Full ownership mindset: willing to scope, build, test, and ship without hand-holding

* Agile instincts: comfortable iterating fast and making smart tradeoffs

* Testing culture: experience writing effective, maintainable automated tests

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 [phone] with one tradeoff you’ve made while shipping fast, and what you’d do differently in hindsight.