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Expect system-design and Java depth: APIs, concurrency, testing, and trade-offs under constraints. Practice walking through past systems you designed, how you gathered requirements, and how you coordinated releases. Be ready for behavioral examples of mentoring and cross-team technical decisions.
Strong fit if you ship production Java systems, lead design conversations, and work well on-site in London with product and engineering partners. Less fit if you want remote-first work or pure individual-contributor coding without architecture ownership.
As a Senior Software Engineer (Java) at Arq in London, your day likely mixes design and delivery: clarifying requirements with product and stakeholders, assessing feasibility under time and cost limits, and aligning with analysts and other engineers on interfaces and performance. Expect hands-on Java design and implementation, code and design reviews, status updates on technical issues, and coordinating installs or upgrades of services you own.
The listing marks remote as off (remote: 0), so plan for London-based work unless Arq states hybrid details in the full posting.
O*NET tasks for this family stress requirements analysis, feasibility under constraints, cross-team design, and coordinating software installation.
Use the free or free-to-learn paths listed above (freeCodeCamp, Saylor, CS50, Microsoft Learn) to refresh fundamentals and full-stack breadth alongside strong Java practice.
Public-domain labor data — prepare examples for 2–3 of these.
Algerian Arabic, natively known as Dziria or Darja, is a variety of Arabic spoken in Algeria. It belongs to the Maghrebi Arabic dialect continuum and is mostly intelligible with the Tunisian and Moroccan dialects. Darja (الدارجة) means 'everyday/colloquial dialect'.
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Senior Software Engineer (Java) at Arq in London About This Position At Arq, a rapidly growing fintech company, we are seeking a Senior Software Engineer with expertise in Java to join our dynamic team. Our mission is to revolutionize global financial interactions by building scalable and secure backend systems that support innovative products. Day-to-Day Responsibilities Design, develop, and maintain high-performing backend systems using Java 25 and Spring Boot. Create REST APIs and microservices for various business-critical applications such as card payments, treasury management, transactions booking, and crypto liquidity. Collaborate with a talented team to deliver complex projects that drive financial inclusion. Skills & Qualifications Demonstrable experience in backend development with fluency in Java. Bachelor's Degree (or above) in Computer Science, Mathematics, Physics, or other Engineering/Science disciplines. Ambitious and results-driven personality with excellent communication skills (English fluency, verbal and written). Quick learner with a focus on clean code, maintainability, TDD, DDD, and continuous integration & delivery. Why Join Arq Joining Arq means shaping the future of our product, culture, and growth. We offer a unique opportunity to tackle big challenges, make global impacts, and grow rapidly with a world-class team. Our mission is to redefine how people interact with money across borders. Applying for This Role If you are passionate about backend development and have the skills we're looking for, we'd love to hear from you! To apply, complete your application directly on this page, or you'll be redirected to the employer's application platform to finish submitting there.
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