Software development remains the largest category in tech hiring globally. Whether you specialise in full-stack, backend, frontend, mobile or DevOps, demand for strong engineers continues to outpace supply across all major markets.
Software Engineer - B2B2C Health Scale-up Up to £75,000 + Equity London (Hybrid – 2 days in office) JavaScript React Node.js TypeScript In Product is partnered with a profitable, growing health tech scale-up…
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Software Engineer - B2B2C Health Scale-up Up to £75,000 + Equity London (Hybrid – 2 days in office) JavaScript React Node.js TypeScript In Product is partnered with a profitable, growing health tech scale-up operating in the B2B2C space. As a Software Engineer, you’ll join a small, experienced engineering team and work within a cross-functional squad alongside a Product Manager and Product Designer.
Role Overview As a Software Engineer (Full-Stack) at Ontik, you’ll play a pivotal role in building and scaling our financial operations platform. Essential Experience 5+ years of experience in software engineering,…
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Role Overview As a Software Engineer (Full-Stack) at Ontik, you’ll play a pivotal role in building and scaling our financial operations platform. Essential Experience 5+ years of experience in software engineering, ideally with some experience in a startup environment.
That's why we're rebuilding the infrastructure that underpins the travel industry - simplifying systems and building tools that will make the future of travel effortless. Engineering at Duffel We're building tools to…
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That's why we're rebuilding the infrastructure that underpins the travel industry - simplifying systems and building tools that will make the future of travel effortless. Engineering at Duffel We're building tools to simplify travel distribution, search, and booking through one seamless API.
We're seeking a UX/UI Designer with strong opinionated design skills paired with front-end development ability to shape how our products look, feel, and work. You'll establish best practices for front-end design across…
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We're seeking a UX/UI Designer with strong opinionated design skills paired with front-end development ability to shape how our products look, feel, and work. You'll establish best practices for front-end design across the company and help implement them - building design systems, component libraries, and patterns that scale across our internal platform, customer-facing websites, mobile apps, and new products.
Software Engineer - B2B2C Health Scale-up Up to £75,000 + Equity London (Hybrid – 2 days in office) JavaScript React Node.js TypeScript In Product is partnered with a profitable, growing health tech scale-up…
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Software Engineer - B2B2C Health Scale-up Up to £75,000 + Equity London (Hybrid – 2 days in office) JavaScript React Node.js TypeScript In Product is partnered with a profitable, growing health tech scale-up operating in the B2B2C space. As a Software Engineer, you’ll join a small, experienced engineering team and work within a cross-functional squad alongside a Product Manager and Product Designer.
Job Title - .NET Developer (Contract) Location - London (Hybrid – 2–3 days onsite) Contract Type - Contract (Outside IR35 / Inside IR35 – depending on client) Duration -12 months (likely extension) Day Rate -…
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Job Title - .NET Developer (Contract) Location - London (Hybrid – 2–3 days onsite) Contract Type - Contract (Outside IR35 / Inside IR35 – depending on client) Duration -12 months (likely extension) Day Rate - Competitive Role Overview We are looking for an experienced .NET Developer to join a delivery-focused engineering team working on business-critical systems in a fast-paced London-based environment. Key Responsibilities Design, develop and maintain applications using C# and .NET / .NET Core Contribute to the development of RESTful APIs and backend services Work on the modernisation and refactoring of legacy .NET applications Collaborate with product managers, business analysts and QA to deliver high-quality features Write clean, testable and maintainable code following best practices Participate in code reviews and contribute to improving engineering standards Support production systems, including bug fixing and performance tuning Work within Agile / Scrum delivery teams Required Skills & Experience Strong commercial experience with C# and .NET / .NET Core Experience building and consuming REST APIs Solid understanding of object-oriented design and software engineering principles Experience with SQL Server and relational databases Familiarity with unit testing frameworks (e.g.
Senior Software Engineer (Robotics) London (On-site, 5 days/week) Permanent Role With Excellent On-site Benefits We’re looking for a Senior Software Engineer to help turn our advanced robotics stack into a dependable,…
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Senior Software Engineer (Robotics) London (On-site, 5 days/week) Permanent Role With Excellent On-site Benefits We’re looking for a Senior Software Engineer to help turn our advanced robotics stack into a dependable, real-world product. #Robotics #SoftwareEngineering #CPlusPlus #ROS #AutonomousSystems #RoboticsJobs #Innovation #HardwareIntegration #TechCareers #Jobster Show less
Software Engineer London / Hybrid Perm Role £80,000 - £100,000 Harrington Starr has partnered with a fast-growing fintech that’s transforming how businesses manage foreign exchange and treasury operations. Key…
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Software Engineer London / Hybrid Perm Role £80,000 - £100,000 Harrington Starr has partnered with a fast-growing fintech that’s transforming how businesses manage foreign exchange and treasury operations. Key Responsibilities Develop and maintain software across the full stack Contribute to architecture and design decisions Support, optimise, and maintain production code Research and integrate new technologies Foster a culture of engineering excellence and continuous improvement Key Requirements 5+ years’ experience working with C#/.NET Experience developing front and middle office systems Strong SQL skills Experience with cloud-native solutions (Azure or AWS) Knowledge of event-driven, microservices architectures Full SDLC experience — from design through delivery and support Key Benefits Join a fast-scaling fintech building next-generation financial technology Work on complex, high-impact systems handling large-scale transactions Collaborative, innovative, and growth-oriented team culture Hybrid working model with flexibility and autonomy Please apply via the link provided or reach out to me directly to book in a confidential phone call - ollie.bluck@harringtonstarr.com #Jobster Show less
Quantitative Developer - London/Remote 40+ leading quant firms seeking top-tier developers. What you'll do: Build low-latency trading systems and infrastructure Develop quantitative libraries and research platforms…
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Quantitative Developer - London/Remote 40+ leading quant firms seeking top-tier developers. What you'll do: Build low-latency trading systems and infrastructure Develop quantitative libraries and research platforms Optimize execution algorithms and risk systems Requirements: 2+ years quant dev or HFT experience Expert C++/Python skills Financial markets and trading systems knowledge Our network: Pay: $180K-$2M+ based on experience Locations: London, Remote Focus: Ultra-low latency, systematic platforms, research infrastructure From prop trading tech to systematic fund platforms.
A leading hedge fund is seeking an ambitious Python Quantitative Developer to join its London office. Requirements Bachelor’s degree or higher in Computer Science or a related field (or equivalent experience) Strong…
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A leading hedge fund is seeking an ambitious Python Quantitative Developer to join its London office. Requirements Bachelor’s degree or higher in Computer Science or a related field (or equivalent experience) Strong proficiency in Python 3+ years’ experience as a Quantitative Developer Proven experience working in a Front Office environment #Jobster Show less
Elevate user experiences and process-based outcomes. Zoom calls with the executive team (30 mins each): Explore industry insights and the company's role.
Enhance trading algorithms, data pipelines, and market connectivity. Why Join Work directly with Front Office trading teams on next-gen algorithmic trading systems.
Salary tags blend employer provided ranges with Catalitium estimates. We mark ranges with Est. labels, note any missing data, and never inflate compensation to boost clicks.
Currency harmonized to USD/EUR/GBP/CHF to avoid surprises.
Outliers are reviewed manually before they appear on a card.
Sponsored employers follow the same disclosure and pay rules.
Yes. Remote-friendly AI and ML roles in the EU have grown over 30% year-on-year. Germany, France, the Netherlands, and Spain lead in volume. Use the AI and EU filters together to surface them quickly, and check the salary estimate badge to ensure the range meets your expectations.
How fresh are the job postings?
Listings are refreshed continuously from employer feeds and normalised daily. Each card shows a posted date pill so you can see exactly how old a listing is. Jobs posted within the last 7 days receive a green New badge. Listings older than 30 days receive a May be filled warning.
Do roles include salary estimates?
Yes. Most listings show an Est. salary pill derived from Catalitium's location-based salary database, blended with any employer-disclosed range. Senior and lead roles receive an automatic seniority uplift. If a salary range is genuinely unknown we leave the field blank rather than show a misleading estimate.
What is a ghost job and how do I spot one?
A ghost job is a listing that has been live for 30+ days and is likely already filled, on hold, or was never a real opening. Research suggests up to 40% of active listings at any time are ghost jobs. Catalitium flags every listing older than 30 days with a triangle May be filled badge so you can prioritise your energy on fresh openings.
What are the highest-paying tech roles right now?
AI and ML engineer roles currently command the highest median salaries on Catalitium, around $150k–$200k USD in the US and EUR 100k–EUR 160k in Europe. Principal and Staff Engineer roles come close, followed by senior full-stack and cloud infrastructure engineers. Use the >100k filter to see only high-compensation listings.
How do I negotiate a higher salary offer?
Reference Catalitium's salary data when negotiating: show the employer the market range for your role and region. Studies show engineers who negotiate receive 10–20% more than the initial offer on average. If base salary is fixed, push on equity, signing bonus, remote allowance, and learning budget. See our Salary Negotiation Guide in the Resources section.
Which European cities pay the most for tech?
Zurich and Geneva (Switzerland) consistently top European tech salaries, followed by London, Amsterdam, Berlin, Paris, and Stockholm. Swiss salaries are typically quoted in CHF and translate to EUR 100k–160k for mid-senior roles. London follows at GBP 70k–110k. Berlin and Amsterdam are competitive at EUR 70k–100k for comparable experience levels.
Can I track my job applications on Catalitium?
Yes. Our free Application Tracker lets you move roles through a Kanban pipeline: Applied, Phone Screen, Interview, Offer, and Closed. It requires no account and stores everything privately in your browser. Hit the Track button on any job card to add it. You can also export your full pipeline as a CSV.
How does Catalitium differ from LinkedIn Jobs?
LinkedIn optimises for engagement and premium upgrades. Catalitium is built exclusively for tech candidates who want signal over noise: every listing shows salary estimates, ghost jobs are flagged, AI-powered summaries save you time reading descriptions, and the application tracker replaces the black-hole Easy Apply experience. No premium paywall, no recruiter spam.
Can I filter to remote-only jobs?
Yes. Choose Remote in the location/country field or tap a Remote shortcut chip. Results are limited to roles that advertise remote or hybrid where the listing text supports it, and remote-friendly rows show a Remote badge.
Which tech stacks are most in demand?
Across Catalitium tech listings, Python, TypeScript/JavaScript, Go, Java, and cloud platforms (AWS, GCP, Azure, Kubernetes) recur most often; AI and data roles add PyTorch, TensorFlow, and LLM tooling. Title and AI summary chips reflect the employer's stated stack.
Which Swiss cities pay the most for software roles?
Zurich and Geneva typically lead Switzerland for software, data, and platform engineering compensation; smaller hubs follow at a discount. Swiss ranges often sit above neighbouring EU markets for comparable seniority—check Est. salary on each card when you filter by Switzerland.
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