International jobs at leading companies, and the Walnut courses that get you ready for them.

Languages and workplace

Global job readiness: CV, interviews and relocation

Prepare a CV that works in your target country, interview with confidence and plan a smooth move abroad.

Level

Beginner

Length

8 hours

Modules

4 modules, 12 lessons

Price

Free

Certificate

Global job readiness: CV, interviews and relocation

What you will learn

• Adapt your CV to the conventions of the US, UK, EU, Gulf and Asian markets.
• Structure your CV so applicant tracking systems parse it correctly.
• Answer behavioural interview questions with the STAR method.
• Compare offers across countries using gross, net and total compensation.
• Build a relocation checklist covering visas, documents, banking and housing.
• Plan your first 90 days in a new international role.

See a sample certificate (opens on Walnut LMS in a new tab)

Data and AI

Python for data professionals

Write clean, reproducible Python and use pandas to turn raw files into answers a business can act on.

Level

Beginner

Length

24 hours

Modules

4 modules, 13 lessons

Price

Free

Certificate

Python for data professionals

What you will learn

• Set up an isolated Python environment and manage dependencies with venv and pip.
• Use core Python types, functions and comprehensions to write readable data code.
• Load, clean, filter, join and reshape tabular data with pandas.
• Summarise data with groupby aggregations and present results as clear charts.
• Track and share your work with Git using branches, commits and pull requests.
• Turn an exploratory notebook into a tested, rerunnable script.

See a sample certificate (opens on Walnut LMS in a new tab)

Data and AI

SQL for analytics and reporting

Query, join and summarise business data with standard SQL, and model tables that make reporting reliable.

Level

Beginner

Length

18 hours

Modules

4 modules, 13 lessons

Price

Free

Certificate

SQL for analytics and reporting

What you will learn

• Explain tables, keys and relationships in a relational database.
• Filter, sort and aggregate data with SELECT, WHERE, GROUP BY and HAVING.
• Combine tables with inner, left and full outer joins without duplicating rows.
• Structure complex logic with common table expressions and subqueries.
• Use window functions for rankings, running totals and period-on-period change.
• Design a simple star schema of fact and dimension tables for reporting.

See a sample certificate (opens on Walnut LMS in a new tab)

Cloud and DevOps

AWS solutions architect associate

Design secure, resilient and cost-aware architectures on AWS and prepare for the SAA-C03 exam.

Level

Intermediate

Length

30 hours

Modules

4 modules, 16 lessons

Price

Free

Certificate

AWS solutions architect associate

What you will learn

• Apply the AWS Well-Architected Framework to review and improve a workload design.
• Design a multi-AZ VPC with public and private subnets, routing and layered network controls.
• Write least-privilege IAM policies and use roles instead of long-lived access keys.
• Choose the right compute, storage and database services for a stated set of requirements.
• Select a disaster recovery strategy that meets a given RTO and RPO.
• Reduce cost with purchasing options, storage tiering and tagging without weakening resilience.

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Languages and workplace

Business English for global teams

Write, speak and present in clear, confident English with colleagues and clients around the world.

Level

Beginner

Length

16 hours

Modules

4 modules, 12 lessons

Price

Free

Certificate

Business English for global teams

What you will learn

• Write short, structured emails that lead with the main point and a clear request.
• Run and take part in meetings and video calls with confident, polite language.
• Disagree, negotiate and give feedback diplomatically.
• Present data and trends accurately using the right vocabulary.
• Adapt communication to high-context and low-context cultures.
• Choose British or American conventions and apply them consistently.

See a sample certificate (opens on Walnut LMS in a new tab)

Data and AI

Power BI analyst certification

Shape data with Power Query, model it as a star schema, write correct DAX and publish secure reports in the Power BI service.

Level

Intermediate

Length

20 hours

Modules

4 modules, 12 lessons

Price

Free

Certificate

Power BI analyst certification

What you will learn

• Connect to files, databases and SharePoint and shape data with Power Query.
• Build a star-schema model with correct relationships and a dedicated date table.
• Write DAX measures that respect filter context, including CALCULATE and time intelligence.
• Design report pages that answer a clear question and meet accessibility basics.
• Publish to the Power BI service, schedule refresh and apply row-level security.
• Explain when to use Import, DirectQuery and Direct Lake storage modes.

See a sample certificate (opens on Walnut LMS in a new tab)

Software development

React and Next.js developer

Build fast, accessible and type-safe web applications with modern JavaScript, React and the Next.js App Router.

Level

Intermediate

Length

30 hours

Modules

4 modules, 12 lessons

Price

Free

Certificate

React and Next.js developer

What you will learn

• Write modern, typed JavaScript with async/await, modules and TypeScript generics and narrowing.
• Build React components with props, state and effects, and avoid common re-render and effect bugs.
• Structure a Next.js App Router application with layouts, dynamic routes and loading and error states.
• Choose between server and client components and fetch and mutate data with Server Actions.
• Test components with Vitest and React Testing Library and meet WCAG 2.2 accessibility basics.
• Measure and improve Core Web Vitals before shipping to production.

See a sample certificate (opens on Walnut LMS in a new tab)

Security

Cybersecurity analyst (SOC level 1)

Monitor, triage and respond to security alerts as a level 1 analyst in a security operations centre.

Level

Intermediate

Length

28 hours

Modules

4 modules, 12 lessons

Price

Free

Certificate

Cybersecurity analyst (SOC level 1)

What you will learn

• Explain the CIA triad and map attacker behaviour to MITRE ATT&CK tactics and techniques.
• Read network and Windows security logs and recognise the event IDs behind common attacks.
• Write SIEM queries to investigate alerts and reduce false positives.
• Triage phishing and malware alerts and extract indicators of compromise.
• Follow the NIST SP 800-61 incident response lifecycle and write a clear escalation.
• Relate SOC work to ISO/IEC 27001:2022 controls, CVSS scoring and GDPR breach notification.

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Data and AI

Generative AI engineering with LLMs

Design, build, evaluate and secure production applications on large language models, from prompts to retrieval and agents.

Level

Advanced

Length

30 hours

Modules

5 modules, 16 lessons

Price

Free

Certificate

Generative AI engineering with LLMs

What you will learn

• Explain tokens, context windows, sampling and the trade-offs between model options.
• Write structured prompts and obtain reliable, schema-valid output with tool use.
• Build a retrieval-augmented generation pipeline with chunking, embeddings and hybrid search.
• Design offline and online evaluations with golden data sets and graded rubrics.
• Mitigate prompt injection, data leakage and excessive agency using OWASP guidance.
• Operate LLM applications with sensible cost, latency, logging and fallback controls.

See a sample certificate (opens on Walnut LMS in a new tab)