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ARQ

Senior Software Engineer, Java

ARQ

. Design, develop, and maintain scalable, secure, and high-performing backend systems .

Posted 10/26/2026full-timeLondon • United KingdomSeniorWebsite

Core Competencies

Role fit
Core Competencies

Use this summary to align your resume positioning with the role.

Proficient in Backend Development with a strong focus on Java, REST API design, and microservices architecture. Demonstrates expertise in clean code practices, TDD, DDD, and continuous integration to deliver scalable and secure systems in the financial technology domain.

Highest-signal resume keywords
Backend DevelopmentJava ProgrammingREST API DesignMicroservices ArchitectureTDD and DDD

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills
Backend DevelopmentJava ProgrammingREST APIMicroservicesClean CodeTest-Driven DevelopmentDomain-Driven DesignContinuous IntegrationContinuous DeliveryBusiness Logic Development
Soft Skills
Excellent Communication SkillsQuick LearnerResults DrivenAmbitious
Certifications & Qualifications
Bachelor's Degree in Computer ScienceBachelor's Degree in MathematicsBachelor's Degree in PhysicsBachelor's Degree in Engineering
Industry Keywords
Financial TechnologyCard PaymentsTreasury ManagementTransaction BookingCrypto LiquidityHypergrowth Startups

Tech Stack

Tools & technologies
JavaMicroservices

About the role

Key responsibilities & impact
  • Design, develop, and maintain scalable, secure, and high-performing backend systems
  • Focus on greenfield development and improvement of existing systems
  • Build REST APIs
  • Engineer microservices
  • Evolve systems supporting card payments, treasury management, transaction booking, and crypto liquidity
  • Develop business logic with emphasis on clean, maintainable code
  • Use TDD, DDD, and continuous integration and delivery
  • Collaborate with a talented team to create solutions that drive financial inclusion and transform how people manage money

Requirements

What you’ll need
  • Demonstrable experience in Backend development, with fluency in Java
  • Bachelor's Degree (or above) in Computer Science, Mathematics, Physics, or other Engineering / Science disciplines
  • Quick learner with an ambitious and results driven personality, with excellent communication skills (english fluency, verbal and written)
  • Track record of building complex products that millions of people use in hypergrowth startups

Benefits

Comp & perks
  • Stock options, so you own part of what you build
  • Discretionary performance bonus
  • The latest tools and technology
  • A world-class team that will challenge and grow your skills
  • The opportunity to help build the best fintech app in Latin America
  • Office Policy: 3-4 days a week in-office