Senior Software Engineer - Chats Stream

Methodfi; United Kingdom; Hybrid; GBP 70,000 - 90,000; Full time

Job summary

A leading creator monetisation platform in the United Kingdom is looking for a Senior Software Engineer to join their critical monetisation stream. You will design and maintain real-time chat services, own APIs, and drive high-impact features in collaboration with product teams. The ideal candidate has expertise in distributed systems and a strong background in API design, with a focus on performance and user impact. The company offers a competitive salary, remote working options, and flexible hours.

Benefits

Competitive salary

Unlimited holiday

Remote working

Flexible hours

Budget for growth and wellbeing

Qualifications

• Strong background in real-time, distributed system development (WebSockets, gRPC, streaming architectures).
• Ability to design scalable, fault-tolerant systems from first principles.
• Experience debugging complex performance issues using tools like Prometheus, Grafana, or DataDog.

Responsibilities

• Design, develop, and maintain Fanvue’s real-time, stateful Chat Service at scale.
• Own and evolve internal event-driven APIs.
• Instrument, monitor, and continuously improve performance.

Skills

Real-time distributed system development

API design experience

Strong communication skills

Debugging complex performance issues

Tools

Prometheus

Grafana

DataDog

Go

Node.js

C#

Job description

Join us in redefining the creator economy with AI

Fanvue is the fastest-growing creator monetisation platform in the creator economy. We are the leading AI-powered creator-first platform, designed to empower creators worldwide to directly monetise their audience. We’re on a mission to redefine the creator economy by empowering creators to connect, share, and earn more efficiently.

🎯 The Role

We’re hiring a Senior Software Engineer to join the Chats stream — Fanvue’s most critical monetisation engine. You will be one of the key owners of our real-time chat platform, responsible for building and scaling the systems that drive creator–fan interactions, AI-native features, and high-volume transactional messaging.

This role exists because we currently have a single engineer supporting this mission-critical stream. Bringing in a second expert ensures continuity, unlocks new monetisation capabilities, and accelerates our ability to ship high-impact features.

🚀 What You’ll Do

• Design, develop, and maintain Fanvue’s real-time, stateful Chat Service at scale

• Own and evolve internal event-driven APIs that connect chat data to monetisation, user, and AI systems

• Instrument, monitor, and continuously improve performance across latency, throughput, and concurrency

• Architect the foundational data and API layers required for Always-On AI features (translation, summarisation, agentic workflows)

• Write clear, rigorously engineered design documents and contribute to high-quality code reviews

• Partner closely with Product to build new social and monetisation features such as reactions, in-chat tipping, and unlockable content

• Collaborate with SRE to define infrastructure, monitoring dashboards, and scaling strategies for peak creator usage

• Act as a technical leader within the team, improving engineering practices and mentoring others

👀 Who You Are

A highly skilled backend or distributed-systems engineer with deep experience building low-latency, high-throughput, real-time services. You think in systems, care about performance at scale, and understand the business impact of every architectural decision. You bring:

• Strong background in real-time, distributed system development (WebSockets, gRPC, streaming architectures)

• Ability to design scalable, fault-tolerant systems from first principles

• Product-minded engineering instincts with an understanding of user value and monetisation

• High ownership mentality with a pragmatic, outcome-driven approach

• Experience debugging complex performance issues using tools like Prometheus, Grafana, or DataDog

• Mastery of backend languages such as Go, Node.js, or C#, and strong API design experience across REST and event-driven systems

• Excellent communication skills and the ability to articulate complex technical trade-offs clearly

Nice-to-haves

• Experience working in creator platforms, chat products, or AI-enabled systems

• Familiarity with NoSQL and in-memory data stores like Redis or DynamoDB

• Prior experience building monetisation primitives or transactional messaging features

✨ You’ll Thrive Here If

• You love solving complex engineering problems at scale

• You think in terms of systems, observability, and high availability

• You enjoy collaborating closely with product teams to build user-facing value

• You want to own huge technical surfaces with autonomy and accountability

⚠️ You’ll Struggle Here If

• You prefer slow-moving environments or lack of accountability

• You are uncomfortable with deep architectural ownership

• You do not enjoy performance, scalability, or distributed systems challenges

🌍 Why Join Fanvue?

• Own one of the highest-impact engineering surfaces in the company

• Competitive salary, equity, and benefits package

• A culture that values innovation, ownership, transparency, and speed

• Unlimited holiday

• Remote working

• Flexible hours, according to when you perform best

• Budget for growth and wellbeing

⭐ Fanvue is for Everyone

We know that diverse teams build better products. Even if you do not meet every single requirement, we encourage you to apply. Many great people grow into parts of a role, and we value potential just as much as experience.