Join ARQ as a Senior Software Engineer to design and develop scalable backend systems in a fast-growing fintech environment.
Posted by employer 2 days ago
First seen on Joblaze 1 day ago
Last verified on the company career page 1 day ago
Skills & Technologies
What you'll build
- Design, develop, and maintain backend systems
- Build REST APIs
- Engineer microservices
- Improve existing systems
- Collaborate with a talented team
Must have
- Demonstrable experience in Backend development
- Fluency in Java
- Bachelor's Degree in Computer Science, Mathematics, Physics, or Engineering/Science disciplines
- Excellent communication skills
Nice to have
- Track record of building complex products in hypergrowth startups
Practical constraints
- 3-4 days a week in-office
Requirements
- Education
- Bachelor's degree
Not disclosed in this posting: compensation, years of experience, visa sponsorship.
Benefits
Joblaze summary
In this role, the Senior Software Engineer will focus on designing and enhancing backend systems that support ARQ's fintech products, including building REST APIs and engineering microservices. Proficiency in Java, along with experience in backend development and a solid understanding of clean code practices, is essential. This position is ideal for someone with a strong technical background and a history of contributing to complex products in fast-paced environments. ARQ's early-stage growth offers a collaborative atmosphere where team members can significantly influence product development.
Joblaze insights
- Listed yesterday — first seen on Joblaze October 7, 2026. Last confirmed on ARQ's careers page October 7, 2026.
- This exact title is also open at 1 other location at ARQ: London.
- PostgreSQL appears in 21.1% of 38 comparable senior backend roles in United Kingdom; Spring Boot appears in 2.6% of 38 comparable senior backend roles in United Kingdom.
Quick facts
- Is the Senior Software Engineer (Java) role remote?
- It's hybrid — ARQ expects some on-site time in London, United Kingdom.
- Where is the role based?
- ARQ is hiring for this position in London, United Kingdom.
- What's the tech stack?
- Joblaze extracted these technologies from the posting: Java, PostgreSQL, Spring Boot.
- What seniority level is this role?
- ARQ targets senior candidates for this position.
- Is this full-time or contract?
- Full-time for this Senior Software Engineer (Java) role at ARQ.
From the original posting
What we're looking for
As a Backend Engineer, you’ll design, develop, and maintain scalable, secure, and high-performing backend systems that power our innovative products. You’ll collaborate with a talented team to create solutions that drive financial inclusion and transform the way people manage their money.
What you'll be doing
The work will focus on greenfield development and improvement of existing systems
Projects will include building REST APIs, engineering microservices and evolving a number of systems that our business depends on (e.g. card payments, treasury management, transactions booking, crypto liquidity)
Our technology stack is based predominantly on Java 25 on the backend with Postgres database
We rely on Spring Boot for quick and quality delivery
We have a pragmatic approach to develop our business logic, focusing on clean code, with emphasis on maintainability and fast turnaround with TDD, DDD and continuous integration & delivery
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
Competitive salary and benefits
Discretionary performance bonus
The latest tools and technology
Office Policy: 3-4 days a week in-office
Standard company text repeated across ARQ's postings is omitted here.