Backend Developer

NexusAM is transforming metal additive manufacturing by tackling its biggest barrier: the prohibitive cost of part qualification. Our platform cuts qualification time and costs while ensuring traceable, consistent quality.

Location:

London, UK

About Nexus

Nexus is an ambitious seed stage startup building the intelligence layer of metal 3D printing. Our platform,NEXUS, takes multi-modal sensor data and generates actionable insights for quality assurance. Formed at Imperial College London by leading experts in the field of additive manufacturing and artificial intelligence, we’re trusted by aerospace, defence, and medical manufacturers, and we're backed by leading investors.We're on a mission to accelerate manufacturing of high-value safety-critical parts with additive manufacturing.

The Opportunity

As our Backend Engineer, you must have experience designing and building large and complex (yet maintainable) systems, and you should be able to do this in about three times the pace most competent people think possible. You’ll work on the core of our platform: the C++ systems that ingest, process, and store high-rate,multi-modal sensor data from metal 3D printing machines to generate actionable outputs. Our software runs where our customers build parts, inside industrial factories, so performance and reliability are critical. Your work will directly enable aerospace, medical, and automotive manufacturers to produce next generation components.

Core Responsibilities

Design and develop our core C++ libraries for high-throughput sensor data ingestion, processing, and storage

Build and maintain Python bindings and APIs that expose backend functionality to our ML and application teams

Real time data streaming through WebSockets.

Maintain robust cross-platform builds, packaging, and deployment for customer environments (Windows and Linux)

Implement robust error handling, logging, and monitoring for production systems running unattended at customer sites

Required Expertise

Bachelor's degree or equivalent experience in computer science, engineering, or related field

3+ years of hands-on experience writing production C++(C++17 or later)

Strong grasp of systems fundamentals: concurrency and multithreading, memory management, and performance profiling

Experience designing software that handles large datasets or high-rate data streams

Exceptional problem-solving abilities with a bias toward practical solutions

Eligible to work in the UK

Nice to Have

Understanding of WebSockets and real-time data streaming between backend services and clients

Experience with pybind11 or similar binding frameworks

Knowledge of scientific data formats, particularly HDF5

Experience with very large point clouds or volumetric data

Background in signal processing, computer vision, or s ensor systems

Experience with scientific or industrial software development

Startup experience or demonstrated ability to thrive in ambiguous, fast-paced environments

Why Join Nexus

Impact: Your work will directly enable more sustainable, efficient manufacturing of critical components

Ownership: Your work shapes the core software architecture

Team: Expect talented, motivated, intense, and interesting co-workers

Benefits:

Comprehensive healthcare package

Central London location with excellent facilities(in-person role)

Regular team events and learning opportunities

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