Staff/Senior Backend Engineer (Node.js)

Mimica; Greater London; Remote; GBP 90,000 - 140,000; Full time

Benefits offered by this job

Stock options

Remote-first

Learning & development budget

Health & retirement benefits

Job summary

Mimica is seeking a senior backend engineer to scale the platform’s backend (MERN). You will design scalable architecture, build APIs, and optimize services while taking operational ownership of what you build.

You will join an early engineering team shaping technical direction, processes and culture with a focus on performance, reliability and security. Fully remote role across UK, Americas, or Europe.

Qualifications

• Background in backend engineering focusing on high-performance production software and scalable architectures.
• Minimum 8 years of experience as a Software Engineer.
• Proficiency in TypeScript and experience with modern frameworks/technologies (Docker, K8s).
• Experience designing APIs and managing databases (PostgreSQL, MongoDB).
• Understanding of distributed systems: microservices, load balancing, caching, scaling, stateless architectures.
• Commitment to high engineering standards, code quality, reliability and security.
• Strong analytical and troubleshooting skills; able to decompose systems to find bottlenecks.

Responsibilities

• Contribute to architectural decisions and collaborate across teams to implement product improvements.
• Develop and optimize a real-time backend service enabling multi-user graph data edits and retraining AI models.
• Create libraries and build APIs in Node.js to interact with ML components.
• Identify fault-tolerance, availability issues and performance bottlenecks and resolve them.
• Refactor components and document implementations.
• Provide feedback via pair programming and code reviews to help peers grow.
• Participate in hiring and onboarding, taking on end-to-end project management as we grow.

Skills

Backend engineering

TypeScript

Real-time systems

APIs design

Distributed systems

Troubleshooting

Team collaboration

Tools

Docker

Kubernetes

Job description

What we are building

Mimica is an AI-powered process intelligence platform enabling enterprises and individuals to reclaim their most precious resource: time. We've all seen repetitive tasks and redundant processes quietly drain productivity and creativity. Not because companies don’t want to become more efficient, but because they don’t know where to start.

Mimica automatically analyzes your team’s work, then generates the AI agents to execute it. Our software turns everyday work into data-backed decisions, helping companies remove process bottlenecks, automate the right tasks, and upskill teams with precision and confidence.

We’ve raised $26 million in Series B financing and are scaling fast. Backed by investors including Khosla Ventures and Paladin Capital, our proprietary AI technology is trusted by Fortune 500 companies to accelerate transformation. Mimica is recognized as a Top 100 AI Start-up by Accel and an industry Leader by the Everest Group. Our team

Behind our platform is a team of exceptionally talented people, remote-first and globally distributed across 16+ countries. We're looking for curious, collaborative people excited to solve complex problems. You'll join a fast-paced environment built on high ownership, bottom-up thinking, and transparent, open communication – helping some of the world's leading organizations transform the way work gets done with AI.

Our approach to engineering

• We prioritize customer needs first

• We work in small, project-based teams

• We have flexibility in terms of the problems we work on

• We own the full lifecycle of our projects

• We avoid silos and encourage taking up tasks in new areas

• We balance quality and velocity

• We have a shared responsibility for our production code

• We each set our own routine to maximize our productivity

Your mission

In this role, your mission will be to enhance and scale the backend systems powering the Mimica platform (MERN stack). This means designing and implementing a scalable architecture, developing and optimizing backend services and APIs, improving the performance and reliability of existing components, and taking operational responsibility for what you build. As a member of our early engineering team, you’ll have the opportunity to shape our technical direction, processes and culture.

Part of your day-to-day

• Contributing to architectural decisions and collaborating across teams to identify and implement product improvements.

• Developing and optimizing a real-time backend service that enables multiple users to edit graph data and re-train AI models through their input.

• Creating libraries and building APIs in our Node.js backend to interact with the various ML components of the system.

• Diagnozing fault-tolerance and availability issues, as well as performance bottlenecks, and resolving them.

• Refactoring our components and services and producing documentation for your implementations.

• Providing feedback to peers through pair programming and code reviews and helping those around you to level up.

• Participating in hiring and onboarding new team members; taking on end-to-end project management responsibilities as we grow.

What you will bring

• Background in backend engineering, focusing on developing high-performance production software and scalable architectures.

• Minimum 8 years of experience as a Software Engineer.

• Proficiency in TypeScript, and experience using modern frameworks and technologies (e.g., Docker, K8s) to build high-throughput, low-latency systems.

• Practical experience in designing APIs and managing databases (e.g., PostgreSQL, MongoDB), with a keen eye for query optimization and efficient data storage & handling.

• Firm grasp of distributed systems concepts and techniques – microservices, load balancing, caching, horizontal/vertical scaling and stateless architectures.

• Commitment to upholding high engineering standards, prioritizing code quality, maintainability, reliability, and security.

• Strong analytical and troubleshooting skills – methodically decomposing systems to identify bottlenecks, determine root causes, and implement effective solutions.

• Drive to continually develop your skills, improve team processes and reduce debt.

• Fluency in English, with effective communication skills – articulating complex ideas, concepts, and trade-offs clearly.

Bonus

• Experience and fluency with Python.

• Experience working within an international high-impact Startup/Scale-up environment – delivering value quickly and iteratively.

• Active interest in AI, automation, or related fields.

We’d love to hear from you, even if you feel you don’t quite have all of the above.

Location

This is a fully remote position. You can be based anywhere in the UK, Americas, or Europe within a UTC-6 to UTC+1 timezone.

What we offer

Generous compensation + stock options - aligned with our internal framework, market data, and individual skills.

Distributed work: Work from anywhere - fully remote, in our hubs, or a mix.

Company-issued laptop, remote setup stipend, and co-working budget

Flexible schedules and location

Ample paid time off, in addition to local public holidays

Enhanced parental leave

Health & retirement benefits

Annual learning & development budget

Annual workaways and regular virtual & in-person socials

Opportunity to contribute to groundbreaking projects that shape the future of work

Note: Some benefits may vary depending on location and role

Mimica will only contact candidates from an @mimica.ai email address. We do not request banking or sensitive personal information during the recruiting process.