Insights
Hiring insight & salary guides.
Practical guidance for founders and talent leaders, and up-to-date tech salary guides for London, Berlin, Amsterdam and New York.
Salary guides
What roles actually pay, by market and seniority, kept current for 2026.
Salary guides
Software Engineer Salary London UK 2026: What to Pay
Software engineer salary in London 2026: our published bands from £55k mid-level to £150k staff, what moves pay, and how to benchmark before you hire.
Salary guides
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.
Salary guides
UK Data Scientist Salary: A Realistic Benchmarking Guide
A plain-English guide to UK data scientist salary levels, what drives pay, and how to benchmark roles properly.
Salary guides
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.
Salary guides
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.
Salary guides
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.
Salary guides
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.
Salary guides
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.
Salary guides
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.
Salary guides
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.
Hiring guides
Practical playbooks for founders and talent leaders running a great process.
Hiring guides
How to Hire a Frontend Engineer
A practical guide on how to hire a frontend engineer, covering screening, role design, and moving fast without losing quality.
Hiring guides
How to Write a Software Engineer CV That Wins Interviews
How to write a software engineer CV in 2026 that gets past AI screening and wins the human review, from a former engineer who screens them daily.
Hiring guides
How to Reduce Engineering Recruitment Costs
A practical guide to reduce recruitment costs in engineering hiring, covering screening, speed, hiring model and retention.
Hiring guides
How to Build an Engineering Hiring Process That Wins Offers
A practical playbook for an engineering hiring process that lands your first-choice candidates, short loops, structured assessment, selling and speed.
Hiring guides
How to Negotiate a Tech Job Offer in the UK
How to negotiate a tech job offer in the UK in 2026: total comp, equity, the ask itself and the counter-offer trap, from a recruiter who runs them.
Hiring guides
How to Choose a Tech Recruitment Agency in London
A buyer's checklist for choosing a tech recruitment agency in London: who screens, which model fits, what to read in the terms, and the questions to ask.
Hiring guides
Tech Contractor Day Rates in the UK (2026)
UK tech contractor day rates for 2026: roughly £400-£1,200/day by seniority, plus how IR35 status and umbrella vs limited company change your take-home.
Hiring guides
How Much Does It Cost to Hire a Software Engineer in the UK?
The real cost of hiring a software engineer in the UK, salary, recruitment fees, time-to-hire and the hidden costs of a bad hire, with how to reduce them.
Hiring guides
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.
Hiring guides
When to Hire Your First Engineering Manager
How to know when your startup needs its first engineering manager, the signs, what to look for, and how to avoid promoting or hiring one too early.
Hiring guides
How Long Does It Take to Hire a Software Engineer?
A realistic breakdown of time to hire a software engineer in the UK, what causes delays, and how to run a faster, better process.
Hiring guides
How to Hire a Product Manager for a Startup
A practical guide to how to hire a product manager for a startup, covering commercial judgement, technical fluency and assessment.
Hiring guides
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.
Hiring guides
How to Scale an Engineering Team from 10 to 50
The stage that breaks most companies: what changes between 10 and 50 engineers, the hiring rate your team can absorb, and how to keep the bar high.
Hiring guides
What a CPO Really Costs in 2026
A CPO on £165k costs about £190k employed before equity. The 2026 arithmetic, how it compares with a Head of Product, and the title-inflation trap.
Hiring guides
How to Hire a DevOps Engineer
A practical guide to how to hire a DevOps engineer, covering screening, DevOps vs SRE, and what good candidates actually earn.
Hiring guides
How to Hire a Platform Engineer: A Practical Guide
How to hire a platform engineer: what the role means, how to screen candidates properly, and what pay to expect in the UK market.
Hiring guides
How Much Does It Cost to Hire a Data Scientist in the UK?
A practical guide to the real cost to hire a data scientist in the UK, covering salary, agency fees, time, and the cost of getting it wrong.
Hiring guides
What an Engineering Manager Really Costs in 2026
An EM on £122.5k costs about £141k employed, and their real price is team output. The 2026 arithmetic, the payback maths and the ratio that matters.
Hiring guides
How to Assess Senior Engineers in Interviews
A practical guide to how to assess senior engineers: ownership signals, system design, and avoiding false negatives in interviews.
Hiring guides
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.
Hiring guides
How to Write a Technical Job Description That Converts
A practical guide to writing a technical job description that attracts strong engineers and survives a real technical screen.
Hiring guides
How to Hire a Data Engineer
A practical guide to hiring data engineers, what to screen for, how to write the role, what they earn, and how to move fast in a scarce market.
Hiring guides
How to Hire Machine Learning Engineers in 2026
How to hire ML and AI engineers in 2026's scarce market, what to screen for, how to spot production ability over demos, pay, and how to move fast.
Hiring guides
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.
Hiring guides
How to Hire Engineers in a New City
Opening a second engineering location: choosing the city, the anchor hire that decides everything, and why most second offices fail structurally.
Hiring guides
How to Hire Your First Product Designer
A practical guide to how to hire a product designer: judging judgement over portfolios, testing collaboration, and knowing when to hire.
Hiring guides
What a Staff Engineer Really Costs in 2026
A staff engineer on £135k costs closer to £156k once employer NI and pension land. The real 2026 employment cost, and what you are actually buying.
Hiring guides
How to Write a Job Description That Attracts Senior Engineers
How to write an engineering job description that attracts strong, senior candidates, what to include, what to cut, and the mistakes that put people off.
Compare & decide
The trade-offs behind the hiring calls that matter.
Compare & decide
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.
Compare & decide
Head of Engineering vs CTO: Which Hire Fits Your Stage
Head of engineering vs CTO explained: what each role does, when to hire which, and how to run the search well.
Compare & decide
In-House Recruiter vs Agency vs Embedded: Which Should You Use?
A practical guide to choosing between an in-house recruiter, a recruitment agency and embedded/RPO for hiring engineers, with the real trade-offs.
Compare & decide
Contingent vs Retained Recruitment: Which Should You Use?
Contingent vs retained recruitment compared: how each model works, the trade-offs, and how to pick the right fit for your next hire.
Market reports
Where demand, supply and pay are heading across our markets.
Market reports
The State of London Tech Hiring
London tech hiring has split in two: aggregate vacancies are down, while AI, platform and fintech roles are as competitive as ever. What that means.
Market reports
The State of Berlin Tech Hiring
Berlin tech pay is climbing again and senior backend, platform and ML roles are the bottleneck, while junior hiring stays crowded. What that means.
Market reports
The State of New York Tech Hiring
NYC startup funding is at its best since 2021, yet teams are hiring leaner. Where the demand and pay really sit, and what it means for hiring plans.
Market reports
The State of Amsterdam Tech Hiring
Amsterdam has more tech employers than ever but one senior talent pool. What the funding reset and the 30% ruling change mean for hiring plans.
Guides & insight
Everything else worth reading from the OpenSource team.
Guides & insight
How to Hire Your First Engineers
A founder's guide to making your first technical hires, when to start, what to look for, and how to run a process that lands strong engineers.
Guides & insight
How to Reduce Time-to-Hire for Engineering Roles
Practical ways startups and scale-ups cut weeks off engineering hiring, tighter loops, real technical screening and decision discipline, from OpenSource.
Guides & insight
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.