Junior python developer jobs in Cardiff - Page 2Create job alerts

Develop and implement new plug-ins to boost the functionality of our Integrated Development Environment (IDE), tailored specifically for our custom Domain-Specific Languages (DSLs)Write and test code for our proprietary compilers, with a focus on enhancing performance, scalability, and long-term mai

Python developers who enjoy building production systems from the ground up and working independently on application development, while collaborating closely with a wider AWS platform team. Software Engineer (Contract) – Python / FastAPI.

Building and maintaining scalable APIs and backend services in Python using FastAPI. Proven experience developing APIs or backend services with Python and FastAPI. Python (FastAPI) backend that powers AI driven insights and data heavy systems.

Языки: С++, для единичных задач Lua и Python;.

We're looking for a Mid-Level to Senior Python Developer with a strong STEM background — someone who can not only write clean, effective code but also understand and work with scientific tables and datasets. Solid understanding of Python fundamentals. You’ll contribute to the design and developm

Collaborate with traders and developers on data needs.

Power & Cooling Engineer, Datacentre / HPC.Our client is a global technology leader that designs, develops, and manufactures IT hardware and software.Last year they posted revenue at nearly $70 billion!.This is to work as part of an EMEA Power and cooling team but focusing on the fast growing AI rea

Languages: Advanced SQL and Python for data manipulation, automation, and ML integration.

Database Engineer (PostgreSQL & Python) - MUST BE BASED IN THE UK. Opportunity for a Database Engineer (Junior/Mid/Senior) to join a remote-first, UK-headquartered technology business. Alongside this, you’ll write production-quality Python to automate database operations, build bespoke tooling, an

Python, scikit-learn, PyTorch, TensorFlow/Keras, LangChain, Pydantic, Spark, Kafka, Databricks, MLflow, Azure, Docker, Kubernetes. Hands-on Python for data science and ML.

Low Latency C++ Engineer | Crypto Trading Powerhouse.Up to £185,000 DOE + RSUs + Bonus + Benefits.Fully Remote (must be based in the UK).Want to help shape the future of crypto trading?.This is a chance to join one of the world’s leading crypto trading platforms and a team known for its cutting-e

Front End JavaScript Developer. As a Front End Developer you will join one of our multinational Scrum teams to create state-of-the-art software solutions. Identify and collaborate with senior developers to address complex problems and implement effective solutions.

Are you a veteran developer who still loves being "hands-on"?. Leading the design of robust functionality, including developer-friendly APIs, intricate domain modeling, and data integrations.

Mentor junior engineers and contribute to architectural decisions.

I’m currently working with a global, market leading engineering business who are looking for a.North Wales on a hybrid basis!.In role you will be joining an experienced development team and play a key role in delivering a variety of product solutions and interfaces used by their clients.You’ll p

We’re excited to be supporting an ongoing aerospace programme with one of CMC’s long-standing clients, and we’re now looking for an experienced Embedded Software Engineer with DO-178 experience to join their team.The project is well established and currently approaching Critical Design Review,

Proficiency in one or more: Java/Python/C++/Rust/Go (strong preference for Java for control-plane/services).

Python, JavaScript, Azure, AWS, AI, LLM's, RAG.

About Webigence and Spark Travel.UX‑first, often highly complex software.Our engineers pair forward‑thinking agile practices with an obsession for intuitive design, shipping products that feel effortless even when the logic underneath is anything but.Alongside a handful of long‑standing third�

For parttime roles – please note this will be pro rata.Contracted Hours: FullTime 37 Hours Per Week, Part time Hours will be considered (21 hours minimum) Contract Type: PermanentClosing date: 11th January 2026 at 11.Make a DifferenceEvery role at the CareQuality Commission (CQC) helps us achi

HP/PCP/Lease/Fleet) and/or VW Bank (New/Used/Demo/Loans)Investigative mind to identify issues and follow through to resolution of defectsComfortable with reviewing large/complex data sets and creating summaries of issuesRelationship building – working with HQ Data Quality team, local IT developers

Are you looking to benefit from a new career in Web Development?.Skills shortages in the IT sector is driving the need for qualified, entry-level career seekers and career changers.We help place graduates from this programme in top UK companies and organisations needing to employ entry-level softwar

Experience using Terraform, R/Python and reproducible analytical pipelines.

This role involves mentoring junior engineers, collaborating with cross-functional teams, and driving the adoption of best practices in software development. Mentor and support junior engineers, helping to develop their skills and promote best practices.

Spatial AI & ML Data Scientist (ArcGIS, Python). Strong spatial data science and GIS skills (QGIS, ArcGIS, Python GIS stack).

Job Title: Senior Java Software Engineer Salary: £60,000 - £80,000 + package Location: Cardiff (onsite circa 2 days every other week) Clearance: Must be SC eligible CPS Group are looking for a Senior Java Software Engineer to join a highly skilled engineering team delivering enterprise-

Are you looking to benefit from a new career in Data Analysis?.If you are detail orientated, perceptive, organised, competent, analytical and can communicate well with those around you; you could have a truly rewarding future as a Data Analyst.We do this using our specialised Data Analyst career pro

Trainee Web Developer - No Experience Required. Are you looking to kick-start a new career as a web developer?We are recruiting for companies who are looking to employ our Coding Traineeship graduates to keep up with their growth. Complete a selection of professional and industry recognised coding c

Are you looking to benefit from a new career in Data Analysis?.If you are detail orientated, perceptive, organised, competent, analytical and can communicate well with those around you; you could have a truly rewarding future as a Data Analyst.We do this using our specialised Data Analyst career pro

We are seeking an SC Cleared Python Data Engineer with strong hands-on experience in PySpark, Delta Lake, and Azure cloud services. The role focuses on designing and delivering scalable, well-tested data pipelines, with particular importance placed on the ability to understand, explain, and design P

Deadline for applications: 11:59pm on 31st October 2025.Were looking for a Principal Software Engineer to shape the technical direction of high-profile projects and lead the delivery of modern, scalable software.We use technology to create impactful, human-centred solutions that make a difference to

Are you looking to benefit from a new career in Software Development?.Skills shortages in the IT sector is driving the need for qualified, entry-level career seekers and career changers.We help place graduates from this programme in top UK companies and organisations needing to employ entry-level so

An award-winning finanical services company based on the the outskirts of Cardiff.Working as an Assistant Data Analyst you will be respobsible for the followingData Transitions.Assist in the pensions data and administration aspects of new scheme take-ons.Assist to ensure accurate membership data and

Are you looking to benefit from a new career in Data Analysis?.If you are detail orientated, perceptive, organised, competent, analytical and can communicate well with those around you; you could have a truly rewarding future as a Data Analyst.We do this using our specialised Data Analyst career pro

Were looking for a Lead Data Engineer to join our Data Engineering and Analytics practice.Lead the design, development, management and optimisation of data pipelines to ensure efficient data flows, recognising and sharing opportunities to reuse data flows where possible.Coordinate teams and set best

Are you looking to benefit from a new career in Software Development?.Skills shortages in the IT sector is driving the need for qualified, entry-level career seekers and career changers.We help place graduates from this programme in top UK companies and organisations needing to employ entry-level so

Data Engineer Salary: Up to £60,000 I am working with a leading Microsoft partner that are currently recruiting for a Data Engineer to join their growing team.This organisation is driving digital transformation for a wide range of businesses across the UK, specialising in delivering innovati

Proficient in Python for data engineering (eg, Pandas, PySpark, asyncio, automation scripts).

NET / C#) Working hours: 10am-6pm (aligned to US team) Fully Remote (UK-based) Salary: £50,000 - £60,000 p/annum CPS Group are partnering with a Data Consultancy to hire a Software Engineer to support their expanding US-facing development team.This role sits within a highly collaborati

Were looking for a Lead Data Engineer to join our Data Engineering and Analytics practice.Lead the design, development, management and optimisation of data pipelines to ensure efficient data flows, recognising and sharing opportunities to reuse data flows where possible.Coordinate teams and set best

Data Analyst (S/4 HANA) up to 45k+ Bonus.As Data Analyst and part of a global IT project team, you will play a key role in managing and maintaining data assets, ensuring integrity, consistency, and usability across the company in SAP.As data analyst you will support the transition to SAP S/4HANA and

IT Service Data Analyst - Newport / Hybrid - £42,856 + Excellent Benefits.Yolk Recruitment are working with a large, established organisation delivering critical services across the UK.They're known for their commitment to reliability, continuous improvement, and making well-informed decisions that

You'll turn raw data from multiple data sources into trusted datasets for our internal users, working closely with analysts, data scientists, and the wider team.You will be responsible for developing pipelines end-to-end, but should also be happy working with established systems and architecture.Thi

Embedded Software & Firmware Engineer Are you passionate about embedded systems and excited by the idea of working on high-performance, real-time technology for next-generation aircraft cabin systems? We are currently recruiting on behalf of an innovative and industry-leading engineering company th

This role involves leading a team of engineers on high-profile projects, ensuring best practices are followed, and driving continuous improvement in software development processes.You will collaborate closely with cross-functional teams, including product management and UX/UI, to ensure that our sof

Data Management Engineer – Contract Location: Warton, Preston (minimum 3 days per week onsite) Contract Length: 12 months (likely to extend) Rate: £30.Clearance: BPSS and SC required (active SC not required at start) We are currently recruiting for an experienced Data Management Engi

Experience using Terraform, R/Python and reproducible analytical pipelines.

DV Cleared Data Engineer - London - 6 months rolling - £700pd+ Outside IR35.I'm working with a defence consultancy who are looking to hire a DV Cleared Data engineer with Geospatial experience.They are working on cutting edge data platforms, integrating top of the line AI products.The main site is