Software Engineer at Rezonant

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: Software Engineer Company Description: Rezonant - Agent-native SDLC startup Job Description: Join a high-performance team building the future of software development as Rezonant exits private beta. You will design, conceptualize, and build an agent-native platform from the ground up, integrating AI into agile workflows. This role offers the chance to shape both technical architecture and product culture at the earliest stage of growth. Location: London, UK Why this role is remarkable: Shape a product exiting private beta that is fundamentally reimagining the software development lifecycle through agent-native intelligence. Thrive in a high-performance culture where bottom-up innovation is encouraged and rapid execution is used to solve complex, ambiguous problems. Work at the cutting edge of AI, using tools like Langgraph and Temporal to build systems that automate traditional engineering processes. What you will do: Design and build the product from the ground up using a modern stack including Python, React, Next.js, and Temporal. Lead cross-disciplinary engineering efforts with full autonomy to validate, gather feedback, and iterate based on direct customer interactions. Architect elegant, simple solutions for complex technical challenges while maintaining high velocity using AI-native development practices. The ideal candidate: Possesses at least 2+ years of professional software engineering experience with a degree in CS, Engineering, AI, or a related field. Demonstrates deep proficiency with LLM tools and agent frameworks such as Langsmith, RAG, and prompt engineering to accelerate development. Exhibits a strong product mindset with the ability to create beautiful user experiences and a philosophical belief in AI-accelerated SDLC. 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 our website. Step 2. Click 'Talk to Jack'. 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.