Jack & Jill
Software Engineer (£65k-£80k + Equity) at Dolfin
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Job Title
Software Engineer
Salary
£65k-£80k + Equity
Company Description
Dolfin is an early-stage London fintech and member of Balderton's Launched programme building an agentic financial ops API for SMB platforms. They enable fintechs and banks to embed AI-native agents for invoicing, billing, and expenses directly into their products, moving beyond simple copilots to production-ready automation.
Location
London, UK
Why this role is remarkable
- Join a fast-moving team in the Balderton Launched programme with a multi-million pound pipeline and signed platform clients already in production.
- Work at the cutting edge of AI and fintech, building agentic workflows that handle real-world financial operations rather than simple demos or copilots.
- High-autonomy environment where you partner directly with founders to shape the engineering culture, product architecture, and technical roadmap from day one.
Job Description
As a Software Engineer at Dolfin, you will bridge the gap between core product development and customer implementation. Splitting your time equally between shipping full-stack features and leading technical integrations, you'll ensure real SMBs go live on the platform. You’ll build reliable, AI-native financial infrastructure that handles high-stakes money movement.
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What You Will Do
- Design and build event-driven, multi-tenant backend systems and frontend interfaces for the core agentic financial operations platform.
- Lead customer integrations end-to-end, serving as the primary technical architect on calls to unblock partner engineering teams and ship fixes.
- Deploy production-grade LLM workflows into financial environments, ensuring absolute correctness, auditability, and reliability for high-stakes money movement.
The ideal candidate
- Possesses 2–4 years of experience shipping production software with a deep background in fintech API infrastructure, payments, or open banking.
- Demonstrates strong full-stack proficiency, comfortable owning both backend architecture and frontend implementation while operating in a fast-paced, unstructured environment.
- Displays a customer-centric engineering mindset, capable of translating integration friction into product improvements and building trust with external technical teams.
Who are Jack & Jill?
Jack
- I'm Jack, an AI that gets to know you on a quick call, learning what you're great at and what you want from your career.
- Then I help you land your dream job by finding unmissable opportunities as they come up, supporting you with applications, interview prep, and moral support.
Get help with your application
Your very own career expert that helps elevate your application to the next level.
Jill
- I'm Jill, an AI Recruiter who talks to companies to understand who they're looking to hire.
- Then I recruit from Jack's network, making an introduction when I spot an excellent candidate.
How does this work?
- Jack's an AI agent for job searching and career coaching. He works for you.
- Jill is the AI recruiter working for the company. She recruits from Jack's network.
- If it's a match and the company wants to meet you, they'll make the intro. In the meantime, if you'd like, Jack will send you excellent alternatives.
We never post fake jobs
- This isn't a trick. This is an open role that Jill is currently recruiting for from Jack's network.
- Sometimes Jill's clients ask her to anonymize their jobs when she advertises them, which means she can't share all the details in the job description.
- We appreciate this can make them look a bit suspect, but there isn't much we can do about it.
Give Jack a spin! You could land this role. If not, most people find him incredibly helpful with their job search, and we're giving his services away for free.
“It took my CV and asked me questions relevant to understanding what kind of jobs to suggest for me. Suggestions were almost perfect. Jobs were exactly what I’ve been looking for.”
Jessica, London
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