Software Engineer (Mid and Senior Levels)

One Big Circle Ltd; Bristol; On-site; GBP 40,000 - 70,000; Full time

Benefits offered by this job

Life Assurance

Work related training courses

Complimentary snacks and refreshments

Access to Bike to Work Scheme

Secure bike storage

Job summary

One Big Circle Ltd is looking for Software Engineers at mid and senior levels to join their Bristol-based office. You will work across diverse technology areas, focusing on embedded systems, machine learning, and collaboration within multi-disciplinary teams.

Responsibilities include designing and developing software solutions, contributing to system design, and maintaining engineering standards. Company benefits include life assurance, office workspace, and access to training courses.

Qualifications

• Strong foundational skillset with a pragmatic approach to problem solving.
• Comfortable working in dynamic, multidisciplinary technical teams.
• Willing to support junior engineers and grow into greater responsibilities.

Responsibilities

• Design, develop, and maintain software solutions.
• Collaborate with teams for system integration.
• Contribute to system design and technical decision-making.

Skills

Embedded Linux

C++/Python

Machine Learning

System Design

Software Development

Collaboration

Tools

PyTorch

TensorFlow

AWS

CI/CD Pipelines

Linux

Job description

Software Engineer (Mid and Senior Levels)

Bristol-Based Office

Full-Time 37.5 hours, over 5 days

The software technology team at One Big Circle is expanding! We are looking for software engineers at all levels of seniority and experience to integrate into our existing team and work across our diverse technology estate.

Available Roles

We have a number of roles available that are suitable for engineers with circa 3+ years of experience from ‘mid level’ up to senior. The roles span a number of broad capability areas which describe the kinds of problems we work on. They are not checklists, we recognise that candidates will bring depth in some areas and interest or exposure in others. We encourage interest from applicants with partial or adjacent skills and backgrounds, to fill a number of different roles within each capability area.

Device & Embedded Software Systems

Embedded Linux, C++/Python, embedded systems, multi-sensor and camera-based devices (including thermal and line-scan), data acquisition and edge processing, device-to-cloud pipelines, networking, system integration, hardware/software collaboration, field diagnostics, performance optimisation, secure and robust systems, Linux build systems (e.g. Yocto), media pipelines (e.g. GStreamer), FFMPEG, IoT devices, sensor data processing, signal conditioning, computer vision, FPGA exposure, electronics fundamentals.

Applied machine learning, computer vision, object detection, image classification, model development and evaluation, data annotation and curation, training pipelines, performance optimisation, edge ML, MLOps, deployment and maintenance of ML solutions, Python development, Python-based ML frameworks, PyTorch, TensorFlow, sklearn, OpenCV, NumPy, feature development, code review, pytest, linting, bug fixing, relational databases, database design and maintenance, AWS/cloud infrastructure, CI/CD pipelines, developer tooling, Linux systems

The Role

As an OBC Software Engineer, you’ll be a hands‑on contributor, working closely with experienced engineers to build reliable, high‑performance systems across devices, cloud platforms, and applied ML, contributing to real‑world, field‑deployed solutions. You will take responsibility for defined components and projects, contributing to system design, implementation, testing, and deployment, while continuing to develop your technical and professional skills.

Responsibilities

You will contribute to the development of innovative solutions within a skilled team that likes getting things done:

• Design, develop, and maintain software solutions
• Contribute to system design and technical decision‑making within the team
• Collaborate with adjacent teams to achieve system integration
• Take ownership of features, projects, or technical areas (scope matched to experience)
• Diagnose and resolve issues with in‑service systems and data
• Contribute to code reviews and help maintain high engineering standards
• Support continuous improvement of development practices, tooling, and system reliability

Personal Qualities and Experience

We are looking for engineers with a strong foundational skillset, a pragmatic approach to problem solving, and a desire to grow. You should be comfortable working in dynamic and multidisciplinary technical teams.

Personal Attributes

• Practical and delivery‑focused, balancing engineering rigour with pragmatism
• Strong communication skills, able to work effectively with multidisciplinary teams
• Self‑motivated and proactive, with a willingness to take ownership of work
• Comfortable contributing to code reviews and technical discussions
• Willing to support more junior engineers
• Keen to grow into greater responsibility for technical direction and project delivery

Company Benefits

Company Benefits Include:

• Life Assurance
• Work related training courses as required
• Complimentary snacks and refreshments including fresh fruit
• Office‑centric role with allocated workspace
• Access to Bike to Work Scheme
• Secure bike storage and shower facilities
• Social events

Successful applicants will be required to pass a BPSS (Baseline Personnel Security Standard) check.