Staff/Senior Backend Engineer (Node.js)

Mimica; Greater London; On-site; GBP 90,000 - 130,000; Full time

Benefits offered by this job

Stock options

Remote work

Laptop provided

Remote setup stipend

Learning budget

Paid time off

Parental leave

Health benefits

Co-working budget

Job summary

Mimica is seeking an experienced Backend Engineer to scale the MERN stack powering our AI-driven platform. You will design scalable architectures, implement backend services, and ensure reliability for multi-user workloads.

As an early engineering member you’ll influence technical direction, own critical APIs, and collaborate across teams while maintaining high engineering standards and strong security. This remote role welcomes UK/Americas/Europe time zones.

Qualifications

• 8+ years of backend engineering experience.
• Strong JavaScript/TypeScript proficiency and modern frameworks (Docker, Kubernetes).
• Experience designing APIs and managing databases (PostgreSQL, MongoDB).
• Understanding of distributed systems, microservices, scaling, and caching.
• Commitment to high engineering standards, security, and reliability.
• Fluent English and strong communication.

Responsibilities

• Contribute to architectural decisions across teams.
• Develop and optimize a real-time backend service for multi-user graph data and AI training.
• Create libraries and APIs in Node.js to interact with ML components.
• Diagnose fault-tolerance, performance bottlenecks, and resolve issues.
• Refactor components and produce documentation.
• Provide feedback via pair programming and code reviews.
• Participate in hiring and onboarding; take on end-to-end project management as we grow.

Skills

Backend engineering

JavaScript/TypeScript

APIs design

Databases

Distributed systems

Code quality & security

English communication

Docker

Tools

Docker

Kubernetes

PostgreSQL

MongoDB

Job description

What We Are Building

Mimica's mission is to empower enterprises, teams, and individuals to reclaim their most precious resource — time and work more efficiently, with greater purpose and impact.

Mimica's mission is to empower enterprises, teams, and individuals to reclaim their most precious resource — time and work more efficiently, with greater purpose and impact.

Our AI-powered task mining observes employee actions across the desktop and categorizes them into detailed process maps. Mimica’s process intelligence highlights inefficiencies, prioritizes improvements based on ROI, recommends the optimal technology for automation (RPA, intelligent document processing, GenAI), and provides a blueprint for building new automations and transforming work.

Visit our Career Page to learn more.

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 JavaScript/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 owning projects from start to finish, including speccing, architecture, development, testing, deployment, release and monitoring.
• 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.