Software Engineer (Backend)

Software Engineer (Backend)

Full-Time 78750 - 96250 £ / year (est.) Home office (partial)
Flourish Ventures

At a Glance

  • Tasks: Design and implement backend systems that are scalable, reliable, and secure.
  • Company: Join Lorum, a pioneering fintech company reshaping global payment infrastructure.
  • Benefits: Enjoy flexible working, private healthcare, wellness days, and employee stock ownership.
  • Other info: Collaborative environment with opportunities for travel and community volunteering.
  • Why this job: Be part of an ambitious project that transforms financial systems and makes a real impact.
  • Qualifications: 3+ years in backend systems with strong skills in Rust or similar languages.

The predicted salary is between 78750 - 96250 £ per year.

Location: London or New York - in office 4 days a week

About Lorum Global payments are not broken. Incentives are. Clearing has been deprioritised inside balance sheet driven institutions whose models rely on lending and interest. When liquidity takes priority over settlement, payments slow and certainty drops. The same financial institutions that distort clearing as providers are disadvantaged as users. They are forced into fragmented setups, inconsistent rails, duplicated compliance, and unpredictable timelines. Stablecoin shortcuts and treasury pooling treat symptoms at the surface, but almost no one is rebuilding the underlying infrastructure in each market.

We are rebuilding clearing as its own specialist function. We act as a clearing and transaction banking partner for regulated institutions, with treasury built into the core so liquidity, settlement, and reconciliation sit in one controlled system. Our platform unifies global and local licenses, direct central bank clearing, and access to domestic rails. We allow clients to open named customer accounts in every market we operate, collecting funds and paying out through a single network while retaining full ownership of their customer relationships. Market expansion becomes as simple as one correspondent relationship, not hundreds.

Why Lorum Joining Lorum means contributing to one of the most ambitious clearing infrastructure projects in global finance. You will help shape settlement systems that perform under real regulatory standards and institutional volumes. You will build for regulated institutions that rely on precision, predictable timelines, and regulatory integrity. It is about working across currencies, markets, and supervisory frameworks to deliver reliable, final settlement.

Role purpose We are looking for an experienced backend engineer to join our team and help build the foundational infrastructure. You’ll be joining a small, cross-functional team focused on shipping real value quickly and building systems that are observable, reliable, and designed to evolve. This role is ideal for someone who enjoys working in fast-moving environments, thrives in ambiguity, and cares deeply about building high-quality backend systems that solve real-world problems. We’re particularly looking for engineers with strong experience in distributed systems and an interest in working with Rust. We don’t expect you to have experience with our exact stack, but we do expect you to bring deep engineering expertise, sound judgment, and a pragmatic approach to problem solving.

Key Responsibilities

  • Backend systems design & implementation
  • Scalability, performance & reliability
  • Security & compliance aware engineering
  • Collaboration & delivery
  • Tooling, testing & continuous improvement

Ideal candidate

Must-Haves

  • 3+ years of experience building backend systems in a strongly typed language (e.g. Rust, Go, Java, Kotlin, C++, or similar).
  • Commercial experience in backend or systems engineering, working on distributed services or APIs.
  • Genuine interest in working with Rust day‑to‑day (prior Rust experience or demonstrable learning is important).
  • Solid understanding of backend fundamentals: concurrency, data modelling, transactions, reliability, and observability.
  • Experience designing and consuming APIs (REST/gRPC/GraphQL) and integrating with other services and data stores.
  • Strong testing mindset and familiarity with CI/CD workflows.
  • Clear communication skills and a collaborative approach to working with Product, Operations, and other engineers.

Nice-to-Haves

  • Hands‑on experience with Rust in production or substantial personal/OSS projects.
  • Experience in fintech, payments, banking, trading, or other financial infrastructure domains.
  • Familiarity with event‑driven architectures, message queues, and stream processing.
  • Experience with PostgreSQL (or similar relational databases) and data‑intensive workloads.
  • Experience running services on a major cloud provider (e.g. AWS, GCP) and with containerisation/orchestration (e.g. Docker, Kubernetes).
  • Exposure to regulated or high‑assurance environments and the constraints they introduce.

Benefits

  • Opportunity to travel (if applicable)
  • Flexible vacation policy
  • Private Healthcare
  • Employee stock ownership (ESOP)
  • Flexible working and autonomy
  • Pay it forward days - we offer 2 annual pay it forward days where you can take time to volunteer for a charitable cause that is important to you.
  • Wellness days - we believe you can only work your best when you feel your best, and we know working at Lorum is intense, so we offer 3 wellness days every quarter where you can take time to re‑energise.

Software Engineer (Backend) employer: Flourish Ventures

At Alloy, we pride ourselves on being an exceptional employer that fosters a vibrant work culture where collaboration and diversity are celebrated. With benefits like unlimited holiday, flexible work policies, and a strong focus on employee growth through training programs and development stipends, we empower our team members to thrive both personally and professionally. Located in a hybrid work environment, Alloy offers the unique advantage of building meaningful connections with colleagues and customers alike, ensuring that every employee feels valued and engaged.

Flourish Ventures

Contact Details:

Flourish Ventures Recruitment Team

StudySmarter Expert Advice🤫

We think this is how you could land Software Engineer (Backend)

Join Local Tech Meetups

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Contribute to Open Source Projects

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We think you need these skills to ace Software Engineer (Backend)

Backend Systems Design
Distributed Systems
Rust Programming
API Design and Consumption (REST/gRPC/GraphQL)
Concurrency
Data Modelling
Reliability Engineering

Some tips for your application 🫡

Show off your coding skills:When applying for a software engineering role, it's super important to showcase your coding skills. Make sure your CV includes your tech stack, any relevant programming languages you’re comfortable with, and examples of projects you've worked on. If you have a GitHub profile, link it up! We love to see code in action.

Tailor your portfolio:For a full-time role, we’d expect to see some solid examples of your work in your portfolio. Make sure to include at least two or three projects that highlight your problem-solving skills and your ability to work with different technologies. Focus on the projects that are most relevant to the position at Flourish Ventures.

Craft a killer cover letter:Your cover letter is your chance to stand out—make it personal! Explain why you want to work at Flourish Ventures and how your skills align with the role. Show us your passion for software development. We dig enthusiastic candidates who understand the value of collaboration and continuous learning!

Be clear and concise:When it comes to writing your CV and cover letter, clarity is key. Avoid jargon that could confuse us and stick to simple, direct language. Highlight your achievements with quantifiable results where possible, and keep everything easy to read. A well-organised application goes a long way!

How to prepare for a job interview at Flourish Ventures

Brush Up on Your Coding Skills

For a full-time software engineering role, it's crucial that we stay sharp with our coding abilities. Expect technical questions that might involve solving problems on the spot or discussing algorithms. Practise on platforms like LeetCode or HackerRank to get comfortable with the types of questions that often come up.

Know Your Tools and Frameworks

Make sure we’re well-acquainted with the tools and technologies listed in the job description. Familiarise ourselves with any specific frameworks or programming languages mentioned. If Flourish Ventures uses React or Node.js, for instance, be ready to discuss how we’ve used them in previous projects or coursework.

Showcase Your Projects

Bring along a portfolio that highlights our best work. This could be code samples, GitHub repositories, or any side projects we’ve built. Make sure we can talk through our thought process for each project, especially the challenges we faced and how we solved them—this shows our problem-solving skills in action.

Prepare for Behavioural Questions

While technical skills are key, full-time positions also require cultural fit. Be ready to discuss our previous experiences and how we handle teamwork, conflict, and deadlines. Brush up on the STAR method—Situation, Task, Action, Result—to clearly articulate our past experiences when discussing how we've contributed to a team.