React Front End Developer

Job not on LinkedIn

🔥 0 minutes ago

🇬🇧 United Kingdom – Remote

⏳ Contract/Temporary

🟡 Mid-level

🟠 Senior

💻 Frontend Engineer / Web Developer

🇬🇧 UK Skilled Worker Visa Sponsor

This company has sponsored UK Skilled Worker visas in the past.

👻 Ghost score 11%

What it means: how likely this posting is sitting open without active hiring.How to read it: 60% or higher means we think this is a ghost. Lower scores are less of a worry.How we score it: age, reposts, open roles vs team size, how fast jobs close, and whether pay is listed.Fine print: an estimate from public data, not a judgment of the company. Real jobs can score high, so treat it as a hint, not a fact.

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Satalia

WebsiteLinkedInAll Job Openings

51 - 200 employees

Founded 2010

💼 Consulting

📣 Marketing

📦 Logistics

💰 Grant on 2016-02

Consulting • Marketing • Logistics

Satalia is a company that leverages advanced technologies to optimize and improve various business operations. They provide a platform for cloud development and data-driven services, employing cloud architects and data scientists to deliver innovative solutions. Satalia operates remotely, with locations in Greece, London, Kaunas, and Vienna. They focus on integrating analytics and marketing strategies to enhance user experience and functionality on their platforms.

📋 Description

• Build the Solve shared visual workspace and real-time collaborative canvas • Ship frontend code in the canvas and collaboration layer • Work closely with the technical lead, architect, and QA • Implement canvas interactions including pan, zoom, drag, selection, spatial layout, and rich interactive cards • Keep the canvas performant with hundreds of live cards • Manage frontend state across transient interaction, persistent product state, and server-authoritative data • Implement real-time collaboration features including presence, optimistic updates, reconnects, missed-event recovery, and conflict handling • Own client-side Server-Sent Events handling, including EventSource, heartbeats, token-authenticated streams, and backoff reconnects • Help determine where WebSockets should be used • Build AI-facing surfaces for streaming output, agent status, partial results, approvals, and recovery • Ensure performance, accessibility, and testing strategy • Implement the per-entity patch wire over SSE • Add optimistic apply with resync on missed events • Build a pending-edits queue that survives reloads • Resolve data-loss defects across load, save-conflict, and live-update paths • Prototype, simplify, and maintain legible systems with specs, designs, and tests

🎯 Requirements

• Senior frontend engineering experience • Deep React (or equivalent) expertise • Strong browser-state expertise • Experience building complex interactive products such as a canvas, editor, map, design tool, whiteboard, or collaborative app • Understanding of state ownership, rendering, browser performance, component decomposition, and failure-prone interactions • Experience with collaborative software authority and conflict rules • Experience shipping real-time event handling over WebSockets or Server-Sent Events • Understanding of event ordering, reconnects, and missed-event recovery on unreliable connections • Familiarity with coding agents and AI-native frontend problems • Ability to design API request and response shapes with backend teams • Understanding of idempotency and optimistic concurrency • Ability to decide which side owns a given piece of state • Technical familiarity with monorepos, CI, quality gates, feature flags, and design systems is useful • Ability to work in the UK • Contract availability for 3 months

🏖️ Benefits

• Truly flexible working • Wellbeing and inclusivity focus • Safe and inviting work environment • Autonomy and freedom • Warm, inclusive culture • Diverse and challenging projects • Technical skills development through hands-on work • Employees' opinions valued and achievements celebrated