Senior Frontend Developer

Senior Front-End Engineer – Investment Banking | £750 p/d (Outside IR35) | London / Hybrid (1 Day/Week in Office)

We are partnering with a global investment bank to hire a Senior Front-End Engineer to join a flagship team delivering a next-generation, single-page application (SPA) platform for high-performance derivatives trading.

£750 per day (Outside IR35) – pay varies based on experience.

Pay Range: Provided by CipherTek Recruitment.

Direct message the job poster from CipherTek Recruitment.

We are using fast, data‑intensive, real‑time trading technology. This is a mission‑critical, front‑office system with exceptional technical standards.

The Opportunity

• Collaborate with elite engineers on a SPA used across the investment bank for derivatives trading.
• Build elegant, high‑performance UIs with real‑time data updates and functional programming paradigms.
• Shape a front‑end architecture trusted by traders, with a focus on resilience, performance, and usability.
• Leverage the latest web technologies in a fast‑paced, agile development environment.
• Flexible working arrangements with only 1 day per week required in the City of London office.
• Strong commercial experience with TypeScript, ES6, HTML5, and advanced CSS.
• Proven delivery of performance‑critical SPAs, ideally within front‑office trading or other high‑frequency environments.
• Proficiency with functional and reactive programming using immutable data structures.
• Attention to UI/UX detail – you take pride in building intuitive, beautiful products.
• Comfortable working in collaborative, high‑performance teams.
• Confident daily use of LLMs and agent‑mode AI tools to accelerate development and enhance workflow.

Nice to Have

• Familiarity with Angular + NgRx or React + Redux.
• Full stack experience using a typed backend language like Java, C#, or F#.
• Location: London (Hybrid – 1 day/week in the office, rest flexible)
• Interview Process: Starts 12th November 2025
• Start Date: 5th January 2026

Location: London, Hybrid – 1 day/week in the office, rest flexible.

Seniority Level: Mid‑Senior level

Employment Type: Contract

Job Function: Information Technology and Finance

Industries: IT Services and IT Consulting, Investment Banking, Software Development