Lead Full Stack Engineer - AWS in London
Lead Full Stack Engineer - AWS

Lead Full Stack Engineer - AWS in London

London Part-Time 36000 - 60000 £ / year (est.) No home office possible
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Complexio

At a Glance

  • Tasks: Lead the frontend development of an innovative AI knowledge assistant for enterprise customers.
  • Company: Join Complexio, a forward-thinking tech company revolutionising maritime operations.
  • Benefits: Competitive salary, flexible work options, and opportunities for professional growth.
  • Why this job: Shape the future of enterprise AI with your expertise in frontend development.
  • Qualifications: 5+ years of frontend experience and a passion for user-centric design.
  • Other info: Dynamic team environment focused on innovation and collaboration.

The predicted salary is between 36000 - 60000 £ per year.

Complexio is building Stevie — an enterprise AI knowledge assistant that gives executives and operators a complete view of their organization through knowledge graphs. Our customers are large maritime shipping companies managing hundreds of vessels, thousands of daily emails, and complex commercial operations.

We are looking for a Senior or Lead Frontend Engineer to own Stevie's frontend. The interface is the product — it determines whether enterprise customers trust the intelligence, get value quickly, and come back. Enterprise AI UX is unsolved. Citations from knowledge graphs, streaming AI responses that feel trustworthy, confidence indicators on operational intelligence.

You will own the full frontend. No separate frontend team. You will own the full frontend — conversational AI interfaces, content feeds, document generation, collaborative features.

  • 5+ years of frontend experience in production.
  • Understanding of rendering models, performance characteristics, and architectural patterns deeply.
  • Ability to push back when the UX doesn’t make sense.
  • Experience shipping real user-facing products.
  • Familiarity with WebSockets, SSE, or similar live data patterns.
  • Capability to take vague problems and turn them into concrete frontend solutions.
  • Experience with AI products, including latency UX, citation rendering, and hallucination presentation.
  • Ability to read a REST API and collaborate with backend engineers on data contracts.
  • Direct communication; you are asked what you shipped and learned, not to fill out status reports.
  • Speed with quality; we ship fast because we scope well.
  • Comfortable with AI-assisted development.

Lead Full Stack Engineer - AWS in London employer: Complexio

At Complexio, we pride ourselves on fostering a dynamic and innovative work culture that empowers our employees to take ownership of their projects and drive meaningful change. As a Lead Full Stack Engineer, you'll not only have the opportunity to shape the future of enterprise AI with Stevie but also benefit from a collaborative environment that encourages continuous learning and professional growth. Located in a vibrant tech hub, we offer competitive salaries, flexible working arrangements, and the chance to work with cutting-edge technology in a supportive team dedicated to excellence.
Complexio

Contact Detail:

Complexio Recruiting Team

StudySmarter Expert Advice 🤫

We think this is how you could land Lead Full Stack Engineer - AWS in London

✨Tip Number 1

Network like a pro! Reach out to folks in your industry on LinkedIn or at meetups. We all know that sometimes it’s not just what you know, but who you know that can get you in the door.

✨Tip Number 2

Show off your skills! Create a portfolio showcasing your best frontend projects. We want to see what you've built and how you tackle complex problems, especially in AI and UX.

✨Tip Number 3

Prepare for those interviews! Research the company and its products, especially Stevie. We love candidates who can discuss how they would improve our UX and make it trustworthy for enterprise customers.

✨Tip Number 4

Apply through our website! It’s the best way to ensure your application gets seen by the right people. Plus, we’re always looking for passionate individuals who are ready to ship quality products fast.

We think you need these skills to ace Lead Full Stack Engineer - AWS in London

Frontend Development
User Experience (UX) Design
WebSockets
Server-Sent Events (SSE)
Rendering Models
Performance Optimisation
Architectural Patterns
AI Product Experience
REST API Integration
Collaborative Features Development
Document Generation
Problem-Solving Skills
Direct Communication
Agile Development

Some tips for your application 🫡

Show Off Your Experience: Make sure to highlight your 5+ years of frontend experience in production. We want to see what you've shipped and how you've tackled complex problems, especially in the realm of AI products. Don't hold back on showcasing your skills!

Tailor Your Application: When applying, tailor your application to reflect the specific requirements mentioned in the job description. We love seeing candidates who understand the nuances of enterprise UX and can articulate their approach to building trust with users.

Be Clear and Concise: Keep your application clear and to the point. We appreciate direct communication, so avoid fluff and focus on what you've learned and achieved in your previous roles. Remember, we want to know what you shipped, not just what you did.

Apply Through Our Website: We encourage you to apply through our website for a smoother process. It helps us keep track of applications better and ensures you get the attention you deserve. Plus, it’s super easy!

How to prepare for a job interview at Complexio

✨Know Your Tech Inside Out

Make sure you’re well-versed in frontend technologies, especially those relevant to the role like WebSockets and REST APIs. Brush up on your understanding of rendering models and performance characteristics, as you’ll need to demonstrate your expertise in these areas during the interview.

✨Showcase Your Problem-Solving Skills

Prepare to discuss specific examples where you've taken vague problems and turned them into concrete solutions. Think about projects where you’ve shipped user-facing products and how you tackled challenges, especially in AI product development.

✨Understand the User Experience

Since the role focuses heavily on UX for enterprise customers, be ready to talk about how you differentiate between consumer UX and enterprise UX. Share insights on how you ensure trust and value in your designs, particularly for high-stakes users like CFOs.

✨Communicate Clearly and Confidently

Direct communication is key in this role. Practice articulating what you’ve shipped and what you’ve learned from your experiences. Be prepared to discuss your collaboration with backend engineers and how you handle data contracts, as this will show your ability to work effectively in a team.

Lead Full Stack Engineer - AWS in London
Complexio
Location: London
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