Twelve

4 Jobs

2 Employees

About the Company

Tech hiring has been the same for decades. Overpriced. Slow. Inefficient...what if it wasn't? Our founders have combined 30 years expertise across exec search, internal rec and agency. They've led talent strategy for companies like Trainline, Moonpay and Checkout, and recruited for 100's of tech brands like McKinsey, Just Eat, and Monzo. Salaries in the technology sector have risen faster than inflation for years, meaning recruitment fees have enjoyed the same trend. In a market where tech talent is more accessible than ever, we don't think that's fair. At Twelve, we leverage modern technology, AI and human insight to streamline the recruitment life-cycle, increase engagement, improve customer service, and reduce costs. Get in touch - hello@twelvetalent.co

Listed Jobs

Company Name: Twelve
Job Title: Contract Software Engineer
Job Description: **Job Title:** Contract Software Engineer (Senior / Staff / Principal) **Role Summary:** Contract engineer to support a UK challenger bank during a high‑growth scale‑up. Focus on designing scalable, resilient architectures, driving continuous integration/delivery, and delivering clean, value‑driven software. Works across the stack, mentors peers, and collaborates closely with product teams. **Expectations:** - Deliver high‑quality, production‑ready code with a product‑first mindset. - Champion engineering best practices (TDD, CI/CD, automated testing). - Mentor and raise standards for the engineering organization. - Adapt to any technology domain (full‑stack, data, platform) as needed. - Contribute to architectural decisions and ensure system scalability. - Participate on‑site two days per week and align with remote collaboration processes. **Key Responsibilities:** - Design, develop, and maintain distributed services and APIs. - Build and own CI/CD pipelines; enforce automated testing and release standards. - Conduct code reviews, pair programming, and knowledge‑sharing sessions. - Provide technical leadership and guidance to junior engineers. - Collaborate with product, design, and operations to translate business value into technical solutions. - Troubleshoot performance, reliability, and security issues in production. **Required Skills:** - Strong fundamentals in software engineering and system design. - Experience building resilient, high‑scale distributed systems. - Proficiency with test‑driven development and continuous delivery practices. - Ability to work across languages/frameworks (e.g., Java, Go, Python, Kotlin, .NET, TypeScript). - Solid understanding of cloud platforms, containerisation, and orchestration. - Excellent communication, mentorship, and collaborative abilities. - Agile/DevOps mindset with a focus on automation and quality. **Required Education & Certifications:** - Bachelor’s degree in Computer Science, Engineering, or a related field **or** equivalent professional experience. - Relevant certifications (e.g., AWS Certified Solutions Architect, Kubernetes, Scrum) are a plus but not mandatory.

London, United kingdom

Hybrid

19-12-2025

Company Name: Twelve
Job Title: Software Engineer
Job Description: **Job Title:** Software Engineer **Role Summary:** Design and build the core architecture of a scalable platform, combining backend systems design with full‑stack implementation. Deliver high‑quality, secure features reliably at scale while maintaining 99.9% uptime and meeting payment industry compliance standards. **Expectations:** - Own end‑to‑end feature delivery from design through production. - Ensure fault‑tolerant, event‑driven services that support rapid development and scaling. - Write secure, maintainable TypeScript/Node.js code and uphold rigorous quality standards. - Demonstrate pragmatic security and compliance practices in a fast‑paced environment. **Key Responsibilities:** - Architect and implement fault‑tolerant, event‑driven services using queues, message brokers, and databases. - Develop end‑to‑end features within a React‑Native codebase. - Produce secure, high‑quality TypeScript (Node.js) code while sustaining 99.9% system uptime. - Implement data protection measures aligned with PCI DSS and PSD2 requirements. - Evaluate technical trade‑offs and advocate for architectural improvements that accelerate development. **Required Skills:** - Minimum 3 years professional experience as a software engineer. - Strong foundation in distributed systems, event‑based patterns, and message brokers. - Proficiency in TypeScript and Node.js. - Experience with statically‑compiled languages (Go, Rust, or Java) is a significant advantage. - Secure coding practices and adherence to compliance standards. - Ability to deliver high‑quality code quickly in a collaborative, fast‑paced setting. **Required Education & Certifications:** - Bachelor’s degree in Computer Science, Software Engineering, or a related technical field (or equivalent experience). - Relevant security/compliance certifications (e.g., PCI DSS, PSD2) are a plus.

London, United kingdom

On site

Junior

31-12-2025

Company Name: Twelve
Job Title: Senior Full Stack Engineer - AI Systems
Job Description: **Job Title** Senior Full Stack Engineer – AI Systems **Role Summary** Design, develop, and maintain end‑to‑end AI‑driven solutions that supplant static dashboards with real‑time agentic platforms for high‑stakes procurement and sustainability decisions. Own data pipelines, agent orchestration, calculation engines, and front‑end integrations across the stack. **Expectations** - Deliver production‑ready AI components, not demos. - Own feature roadmaps, writing briefs and shipping code. - Work independently in ambiguous environments, providing autonomy. - Collaborate closely with cross‑functional teams while maintaining ownership of outcomes. **Key Responsibilities** - Build and scale data pipelines (Python/FastAPI, Dagster). - Implement agentic orchestration (LangGraph, MCP, function calling) and RAG systems. - Develop domain services for price cascades, carbon calculations, and supplier modeling. - Create front‑end components using Next.js, TypeScript, React, and MUI/MUI X. - Integrate AI model embeddings (Voyage AI) into the platform. - Ensure system performance, reliability, and quality through testing and continuous delivery practices. - Own deployment, monitoring, and ops for the full stack. **Required Skills** - Advanced Python programming (FastAPI, FastAPI, data engineering). - Experience with agentic orchestration frameworks (LangGraph, MCP, function calling). - Knowledge of RAG architectures and retrieval pipelines. - Proficiency in data pipeline orchestration (Dagster or equivalent). - Comfortable with relational databases (Neon/Postgres). - Front‑end expertise: Next.js, TypeScript, React, MUI/MUI X. - Familiarity with AI/ML compute (Voyage AI embeddings, LLM orchestration). - Strong problem‑solving, domain curiosity in supply chain, sustainability, and regulatory contexts. - Ability to work autonomously and make decisions at the edge. **Required Education & Certifications** - Bachelor's (or higher) degree in Computer Science, Engineering, or related field. - No mandatory certifications; relevant industry or AI coursework accepted.

Company Name: Twelve
Job Title: Senior / Principal Platform Engineer
Job Description: **Job Title:** Senior / Principal Platform Engineer **Role Summary:** Lead platform engineering initiatives to balance speed and security, ensuring compliance while enabling scalable AI-driven financial systems. **Expectations:** 5+ years in platform engineering, DevOps, or SRE roles. Expertise in cloud infrastructure and security compliance frameworks. **Key Responsibilities:** - Design and maintain GCP infrastructure using Terraform for consistent environments. - Develop CI/CD deployment standards to enable frequent, reliable releases. - Implement security controls (IAM, VPC, encryption) and ensure NIST/SOC-2 compliance. - Establish observability solutions for logging and monitoring with audit requirements. - Collaborate on architecture and mentor engineers across teams. **Required Skills:** - Strong GCP and Terraform experience. - CI/CD pipeline design, Python/Bash scripting. - Compliance frameworks (NIST, SOC-2) implementation. **Required Education & Certifications:** - Bachelor’s degree in Computer Science or related field. - Cloud certifications (e.g., Google Cloud Professional Engineer) preferred.

London, United kingdom

Hybrid

Senior

12-03-2026