Jack & Jill

About the Company

Ok, I'll go first. I'm Jack, an AI that gets to know you deeply, what you’re great at and what you want out of your career. I then work to make that a reality – finding the best fit public job listings as they come up, supporting with applications, interview prep, and moral support. I also work together with my partner Jill to find off-market opportunities and introduce you directly to companies, just like a recruiter would. And I'm Jill, an AI that spends time with hiring managers and talent teams to really understand their company, their open roles, and who will thrive there. I work with Jack to find great fit people, like a headhunter with 1000x the network. Head to website and have a chat with us, we're always online.

Listed Jobs

Company Name

Jack & Jill

Job Title

Head of AI (€150k+ + Equity) at an early-stage AI security platform

Job Description

Job Title: Head of AI Role Summary: Lead AI strategy development and deployment for an early-stage AI security platform, translating research into scalable solutions while building a high-performing team. Expectations: Proven AI/ML leadership with product delivery experience, deep technical expertise in modern AI methodologies, and ability to architect scalable infrastructure. Key Responsibilities: Define AI vision for security products; direct research and development of advanced AI/ML (LLMs, anomaly detection); recruit and mentor AI research/engineering teams. Required Skills: Expertise in transformers, LLMs, embeddings; strong engineering evaluation skills (architecture, scalability); leadership in productizing AI solutions. Required Education & Certifications: None specified.

Paris, France

On site

13-11-2025

Company Name

Jack & Jill

Job Title

Senior Software Engineer at lottielab.com

Job Description

**Job Title** Senior Software Engineer (Graphics/Full Stack) **Role Summary** Drive end‑to‑end development of AI, video, and vector features for a leading motion‑design platform. Build and ship innovative product capabilities that enable advanced motion asset creation for a global user base. **Expectations** - Lead the conception, research, implementation, and maintenance of new product features independently or in cross‑functional teams. - Solve complex rendering and performance challenges at the intersection of video and vector graphics. - Expand AI video generation pipelines and vector‑asset editing tools within the editor environment. - Deliver production‑grade code that scales to hundreds of thousands of users. **Key Responsibilities** - Design, prototype, and ship new software features from idea to release. - Research and implement advanced graphics algorithms (e.g., rendering, compositing, computational geometry). - Build and optimize AI‑driven video generation workflows. - Develop vector asset generation and editing capabilities in the editor. - Maintain platform stability, performance, and scalability across backend and cloud infrastructure. - Collaborate closely with product, design, and data teams to refine feature specifications. **Required Skills** - Strong mathematical foundation: Linear Algebra, Computational Geometry, and algorithmic reasoning. - Proficiency in web graphics APIs: Canvas 2D, WebGL, WebGPU, WebAssembly. - Front‑end & UI engineering with TypeScript and modern frameworks. - Experience in backend/cloud architecture for graphics and video rendering, including distributed or multiplayer contexts. - Familiarity with AI video generation frameworks and pipelines. - Excellent problem‑solving, code quality, and documentation practices. **Required Education & Certifications** Bachelor’s or Master’s degree in Computer Science, Software Engineering, or a related technical field (or equivalent professional experience).

London, United kingdom

Remote

Senior

25-11-2025

Company Name

Jack & Jill

Job Title

Senior Full Stack Engineer (£75k-£95k + Equity) at VC-backed climate tech platform

Job Description

**Job title:** Senior Full Stack Engineer **Role Summary:** Lead end-to-end engineering of a climate‑tech platform, driving product from MVP to global scale. Own architecture, development, deployment, and infrastructure while collaborating with the founding team on strategy, hiring, and scaling. **Expectations:** - Deliver high‑quality, scalable software that supports ocean conservation initiatives. - Own full technical roadmap, set engineering standards, and influence company culture. - Work closely with the founding team on technical vision and organizational growth. **Key Responsibilities:** - Design, build, and maintain backend services (Go, microservices, API design). - Develop responsive front‑end components using React/Next.js (JavaScript/TypeScript). - Architect cloud solutions on AWS, implement CI/CD pipelines, and manage DevOps practices. - Guide engineering standards, best practices, and code quality. - Participate in hiring, mentoring, and scaling the engineering team. - Collaborate with product, design, and data teams to ensure technical alignment. **Required Skills:** - 5+ years backend development in Go (API design, microservices). - Strong React/Next.js proficiency, modern JavaScript/TypeScript, responsive design. - Cloud expertise: AWS services, CI/CD, DevOps tooling. - Experience designing scalable, high‑availability systems. - Excellent problem‑solving, communication, and team leadership abilities. **Required Education & Certifications:** - Bachelor’s degree in Computer Science, Engineering, or related field (or equivalent professional experience). - Certifications in cloud platforms (e.g., AWS Certified Solutions Architect) are a plus.

London, United kingdom

Hybrid

Senior

25-11-2025

Company Name

Jack & Jill

Job Title

Frontend Engineer (+ Equity) at Thema

Job Description

**Job title:** Frontend Engineer **Role Summary:** Early‑stage Frontend Engineer responsible for building and evolving sophisticated web applications. Focus on crafting elegant user interfaces, visualizing data with modern libraries (e.g., D3.js, Three.js), and ensuring high code quality through best practices, testing, and continuous deployment. **Expectations:** - Minimum 3 years of professional experience in TypeScript development. - Proven track record building modern React applications and consuming RESTful services. - Strong grasp of CSS, semantic HTML, and accessible UI design. - Ability to produce clean, maintainable, testable code and communicate effectively with cross‑functional teams. **Key Responsibilities:** 1. Design, develop, and maintain scalable web applications using TypeScript, React, and related technologies. 2. Create and refine user interfaces and data visualizations with D3.js, Three.js, or similar libraries. 3. Implement responsive, accessible UI components following web standards and accessibility guidelines. 4. Write unit, integration, and end‑to‑end tests; enforce code quality through linting, reviews, and automated pipelines. 5. Collaborate with product managers, designers, and backend engineers to scope, plan, and deliver new features. 6. Champion frontend best practices, staying updated on new tools, frameworks, and design patterns. 7. Participate in architecture discussions, tooling decisions, and deployment processes. **Required Skills:** - TypeScript, React, JSX - RESTful API integration - CSS, SCSS, CSS‑in‑JS, and responsive design techniques - Semantic HTML & WCAG accessibility principles - Data‑visualization libraries (D3.js, Three.js, etc.) - Testing frameworks (Jest, React Testing Library, Cypress) - Version control (Git) and CI/CD pipelines - Strong problem‑solving, communication, and independent work orientation **Required Education & Certifications:** - Bachelor’s degree in Computer Science, Software Engineering, or a related discipline (or equivalent professional experience).

London, United kingdom

Remote

Junior

25-11-2025