C++ Software Engineer (Remote)

Our engineering team is split across two codebases which use different languages for different use cases. As a mid-level developer your key responsibilities will be:

• Maintain and extend C++ Lambda services for Open Banking
• Build and improve React/TypeScript frontends
• Develop Python microservices and tooling
• Write and maintain AWS CDK infrastructure (Python)
• Ensure AL/ML services are reliably deployed and scaled across environments
• Participate in the full deployment lifecycle: develop, test, deploy across AWS accounts

Our platform is handling highly confidential information and keeping data secure is at the heart of everything we do. You should therefore have a methodical approach to software development and write high-quality code.

• Degree or equivalent in a technical subject
• 3+ years of professional software engineering experience
• C++ background (at least one role in work history involving substantive C++ development)
• Comfortable working daily in TypeScript and Python alongside C++
• Solid understanding of REST APIs and microservice architecture
• Comfortable with CMake build systems
• Proficient with Git (branching, rebasing, pull requests)
• Good testing habits (unit tests, integration tests)
• A private, distraction-free, dedicated home office in the UK with a fast internet connection
• A home address within two hours travelling distance of Cardiff by public transport for attending meetings
• Happy and productive on a Linux desktop (Ubuntu)
• Comfortable with CLI-first workflows, shell scripting, and terminal-based development

Cloud & Infrastructure(Essential)

• Practical cloud platform experience (AWS preferred; GCP or Azure also accepted)
• Familiarity with serverless services (Lambda or equivalent), managed databases, CDNs, DNS, secrets management
• Familiarity with Infrastructure as Code (AWS CDK or CloudFormation preferred, Terraform acceptable)
• Comfortable with CI/CD pipelines and Docker

AI-Assisted Development (Critical)

• Demonstrable experience using AI coding tools, specifically Cursor and/or Claude Code
• Comfortable using AI tools as part of everyday development
• Actively enthusiastic about AI-assisted workflows

Character & Working Style (Essential)

• Able to communicate in English with a technical audience, both verbally and in writing
• Team player who collaborates well in a small, close-knit engineering team
• Enthusiastic and curious, genuinely interested in the product and the technology
• Willing to move fluidly between languages as the task demands
• Focused on delivering working software that meets the requirements

Nice to Have (Not Essential)

• Open Banking experience (UK AIS/PIS/VRP, FCA regulation)
• Payments industry knowledge (payment initiation, bank integrations, fraud/tripwire detection)
• React experience (modern React, component libraries such as MUI)
• Understanding of OAuth2/OIDC
• Experience with DynamoDB data modelling

• Salary dependent on experience
• Learning opportunities and technical challenges
• Company pension scheme
• Flexible hours, home working, 37.5 hours per week (must be within 2 hours travel of Cardiff)
• In-person team days every few months
• 25 days annual holiday (plus public holidays)
• Extra £312 per year tax-free for home office expenses

Are you looking to take on a new C++ coding challenge? Do you want to work from home with flexible working hours? Would you like to work at the forefront of financial technology?

Hope Macy is a leading fintech company growing its development team. We are an authorised payment institution and credit reference agency with the UK Financial Conduct Authority (FCA) and provide financial solutions for ethical lending and money management. All our developers work from home and have flexible working hours.

We’re building technology that makes financial services simpler, smarter, and more connected. Our team is always looking for better ways to solve problems and create value for our clients. It’s an exciting space to work in, with plenty of opportunities to shape products that make a real difference.