Co-founder · Former software developer
George
George spent years as a software developer before co-founding OpenSource. Having been the person on the other side of the technical interview, he runs the technical screening that means clients only meet engineers who can genuinely do the job. He writes our engineering-hiring and salary research from that first-hand perspective.
Areas of expertise
Written by George
How to Interview Backend Engineers
How to interview backend engineers well in 2026, what to test, how to score it, running system design as a conversation, and avoiding false negatives.
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How to Interview Data Engineers
How to interview data engineers in 2026, what to test in SQL and pipelines, running data system design well, and the batch-versus-streaming judgement.
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How to Interview Frontend Engineers
How to interview frontend engineers in 2026, what to test beyond a framework, running realistic UI exercises, and scoring depth over trivia.
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How to Interview Platform Engineers
How to interview platform engineers in 2026, why platform is a product, testing golden paths and reliability, and how the role differs from SRE.
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Senior Backend Engineer Salary UK 2026
What a senior backend engineer earns in the UK in 2026, London vs regional pay, contract day rates and what actually moves an offer.
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UK Tech Salary Report 2026
OpenSource's 2026 UK tech salary report, base pay for software, data and AI roles by seniority, city and industry, with what's moving offers this year.
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Tech Salaries by Industry 2026
How fintech, AI, SaaS and marketplace companies pay differently in 2026, with industry salary premiums mapped by role and seniority.
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Contract vs Permanent Tech Hiring
When contractors beat permanent hires (and vice versa) for startups and scale-ups, cost, speed, knowledge retention and how to mix both models well.
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Product Manager Salary Guide 2026
What product managers earn in 2026, indicative base salary ranges from mid-level PM to CPO across Europe's startup hubs, from OpenSource.
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Technical Interviews That Don't Lose Great Engineers
How to build a technical interview that predicts real performance without driving strong engineers away, from a developer turned recruiter.
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New York Tech Salary Guide 2026
What engineers, product managers and data specialists earn in New York in 2026, indicative USD base-salary ranges by role and seniority, from OpenSource.
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Amsterdam Tech Salary Guide 2026
What engineers, product managers and data specialists earn in Amsterdam in 2026, indicative euro salary ranges by role and seniority, from OpenSource.
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Berlin Tech Salary Guide 2026
What engineers, product managers and data specialists earn in Berlin in 2026, indicative euro salary ranges by role and seniority, from OpenSource.
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London Tech Salary Guide 2026
What software engineers, product managers and data specialists earn in London in 2026, indicative salary ranges by role and seniority, from OpenSource.
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