Software Engineer at AI-native SDLC automation startup

This is a job that Jill, our AI Recruiter, is recruiting for on behalf of one of our customers. She will pick the best candidates from Jack's network. The next step is to speak to Jack. === Job Title Full Stack Software Engineer Salary Not Disclosed Company Description London-based AI startup accelerating the SDLC through agent-native development Job Description Join a high-performance team building the next generation of software development tools. Moving beyond simple coding agents, you will design and build an agent-native platform that integrates traditional agile processes with AI. You will have a deep impact on product architecture, culture, and quality as the company transitions out of private beta. Location London, UK Why this role is remarkable

• Shape the future of the SDLC by building agent-native systems that enable traditional companies to achieve 10x development velocity.
• Join an elite, high-performance culture that values deep intellectual curiosity, bottoms-up innovation, and rapid execution in an ambiguous environment.
• Gain massive ownership at a critical growth phase as the company exits private beta, directly influencing the technical architecture and product direction.

What You Will Do

• Design, conceptualize, and build product features from the ground up using Python, React, Next.js, and Temporal.
• Develop and optimize agentic workflows, implementing evals and leveraging LLM tools like Langgraph and Claude CLI to increase velocity.
• Collaborate directly with the founding team and early adopters to validate features and iterate rapidly based on real-world feedback.

The ideal candidate

• Has 2+ years of professional software engineering experience with a strong degree in CS, AI, Math, or Physics.
• Possesses a philosophical belief in AI-native development and proficiency in building LLM-based applications including RAG and prompt engineering.
• Demonstrates a strong product mindset with the ability to lead cross-disciplinary teams and a desire to create beautiful user experiences.

=== Who are Jack & Jill? Ok, I'll go first. 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. And 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. Next steps Step 1. Visit the job listing. Step 2. Click 'Talk to Jack', or go straight there: https://www.jackandjill.ai/jobs/software-engineer-at-ai-native-sdlc-automation-startup-12da74e3-0488-4e0b-8296-43b4f174f288?utm_source=linkedin&utm_medium=job_post&utm_campaign=featured_role_12da74e3-0488-4e0b-8296-43b4f174f288 Step 3. Talk to Jack so he can understand your experience and ambitions. Step 4. Jack will make sure Jill (the AI agent working for the company) considers you for this role. Step 5. If Jill thinks you're a great fit and her client wants to meet you, they will make the introduction. Step 6. If not, Jack will find you excellent alternatives. All for free. 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.