Senior Software Engineer (Romania)

Company Profile CloudMargin is an award winning, growth-stage FinTech company offering an innovative Software-as-a-Service (SaaS) service. We are rapidly challenging the way financial and corporate institutions manage the collateral and risk associated with derivatives trading. We believe in offering our community an affordable, easy to deploy and scalable service. Backed by professional investment and corporate investors, our global team works closely across product, technology and sales disciplines. Our flat structure and ethos of openness and communication means you’ll be engaged with everyone in the business and have the senior leadership team as one of your key stakeholders. Primary Purpose of Role This is a role for an engineer who wants real influence. As a Senior Software Engineer at CloudMargin, you'll work across teams to solve our hardest problems, shape key architecture decisions, mentor the next generation of engineers, and lead how we adopt AI-assisted and agentic development across the whole engineering organisation. Core Accountabilities Deliver complex features across teams, contributing to key architecture and design decisions Design for performance, scalability, security and testability - reducing complexity rather than adding it Mentor engineers and set the standard for engineering excellence across the team Set the team's standards for safe, effective use of AI-assisted and agentic tooling - evaluating new tools and driving adoption of what works Take operational responsibility for what you ship, and communicate clearly with stakeholders at every level Experience 5+ years (or equivalent) of software development experience 2+ years with React (or a similar frontend framework) and 2+ years with NodeJS Deep, practical knowledge of TypeScript, microservice architecture and AWS (we run Fargate, moving to Lambda, API Gateway and SQS) A track record of mentoring, raising engineering standards and pragmatic technical decision-making Hands-on fluency with AI-assisted development tools and clear-eyed judgement about their strengths and limits. If you've built and led at scale in a different but comparable stack, we're open - depth of judgement matters more to us than exact tool history. Skills Our engineers work in self-organised Scrum teams building new features and products on a modern stack: TypeScript, NodeJS and React, microservices on AWS (Fargate today, moving to Lambda, API Gateway and SQS), with TDD and full CI/CD. AI-assisted development (GitHub Copilot, Claude Code, Cursor) is a growing part of how we build - we invest in using it well, and every engineer owns and reviews what ships. Compensation & Benefits Competitive base salary Leave entitlement 25 days paid leave per year plus all Public Holidays Flexibility We operate a hybrid-remote approach to work which includes at least two days per week in the office. 45 working days Work From Anywhere (WFA) policy Learning and development £1,000 (or local equivalent) per year Family 6 weeks paternity pay Maternity Bonus Wellbeing Pension Life insurance 2x Wellness Days per year (no questions asked!) Perkbox Health Private healthcare Equal Opportunities CloudMargin is committed to equal opportunities in employment and to a working environment free from discrimination, bullying, harassment and victimisation. We welcome applications from all backgrounds and will make reasonable adjustments throughout the recruitment process on request - just let the Recruiting Team know your requirements. Candidate Privacy Policy https://cloudmargin.com/privacy-policy/