Software Engineer – Full Stack (SaaS & Infrastructure)
Software Engineer – Full Stack (SaaS & Infrastructure)

Software Engineer – Full Stack (SaaS & Infrastructure)

Braintree Full-Time 36000 - 60000 £ / year (est.) Home office possible
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At a Glance

  • Tasks: Design, build, and maintain core services for our SaaS platform.
  • Company: Flox is a cutting-edge startup focused on enhancing developer productivity.
  • Benefits: Enjoy a competitive salary, equity, and a flexible remote work environment.
  • Why this job: Join a dynamic team and shape the future of software development tools.
  • Qualifications: 4+ years in full-stack development with strong skills in Go, Rust, or Python.
  • Other info: Karaoke enthusiasts welcome! Travel about 2 weeks a year to collaborate.

The predicted salary is between 36000 - 60000 £ per year.

Location: Remote (timezones between PST and UTC+1)
Employment Type: Full-Time
Reports To: VP of Engineering

About Us

Flox is an innovative Series A startup building developer tools for engineering teams. We\’re focused on simplifying complex workflows, improving developer productivity, and empowering teams to deliver high-quality software faster. At Flox, we value technical excellence, collaboration, and iterative improvement, and we\’re looking for a Software Engineer – Full Stack to help us build and scale our core platform.

About the Role

We are looking for a full stack focused software engineer to help design, build, and maintain the core services and user interfaces that power our SaaS offering. You will work on APIs, multi-tenant storage, role-based access control, authentication and authorization, payment systems, web presentation, and database schema design. You will be responsible for ensuring our services are secure, scalable, and efficient, supporting both our internal teams and customers.

This role is ideal for an engineer who thrives in a startup environment, understands the challenges of scaling SaaS platforms, and enjoys building robust and well-architected systems. You’ll work closely with product, design, and other engineers to deliver high-quality services that drive our product forward.

Responsibilities

  • Design, implement, and maintain scalable services that power our SaaS platform.

  • Develop and optimize APIs for internal and external use.

  • Work on authentication & authorization systems, including role-based access control (RBAC) and multi-tenancy models.

  • Build and integrate payment processing systems for subscriptions and billing and back office needs.

  • Enable simple get-out-of-the-way experiences via our web console.

  • Design and optimize database schemas for performance and maintainability.

  • Ensure services meet security, compliance, and SOC2 requirements.

  • Implement observability, monitoring, and incident response processes to ensure system reliability.

  • Collaborate closely with other engineers, product managers, and designers to deliver seamless user experiences.

  • Participate in code reviews, architecture discussions, and technical roadmap planning.

  • Perform incident response and support (includes on-call rotation)

Qualifications

Technical Expertise:

  • 4+ years of experience in full-stack software development for a SaaS or Enterprise administration console.

  • Strong proficiency in Go, Rust, Python, or a similar backend language.

  • In addition to the backend language, strong proficiency with Javascript/Typescript, particularly Angular.

  • Experience with RESTful APIs and/or gRPC.

  • Expertise in authentication and authorization protocols (OAuth, OpenID Connect, JWT).

  • Experience designing and implementing RBAC and multi-tenant architectures.

  • Strong understanding of SQL and database optimization (PostgreSQL, MySQL, or similar).

  • Familiarity with payment processing systems (Stripe, Braintree, or similar).

  • Knowledge of observability tools (Prometheus, OpenTelemetry, etc.).

Nice-to-Have:

  • Experience with SOC2 compliance, security best practices, and infrastructure hardening.

  • Familiarity with modern Angular frameworks

  • Familiarity with Nix, Rust, or Node.js.

  • Knowledge of event-driven architectures (Kafka, NATS, or RabbitMQ).

  • A willingness to Karaoke

What We Offer

  • Competitive salary and meaningful equity in an early-stage startup.

  • Flexible, remote-friendly work environment.

  • Opportunities for career growth in a high-impact role.

  • The chance to shape the technical culture and architecture of a rapidly growing SaaS product.

Travel: It is encouraged to travel about 2 weeks a year to collaborate with the team in person.

How to Apply

To apply, please submit your resume and a brief cover letter explaining why you’re excited about joining Flox as a Software Engineer – Full Stack

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Software Engineer – Full Stack (SaaS & Infrastructure) employer: Flox Dev UK Ltd

Flox is an exceptional employer for Software Engineers seeking to make a significant impact in a dynamic startup environment. With a focus on technical excellence and collaboration, we offer competitive salaries, meaningful equity, and a flexible remote work culture that encourages personal growth and innovation. Join us to shape the future of our SaaS platform while enjoying opportunities for career advancement and the chance to collaborate with talented teams across various time zones.
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Contact Detail:

Flox Dev UK Ltd Recruiting Team

StudySmarter Expert Advice 🤫

We think this is how you could land Software Engineer – Full Stack (SaaS & Infrastructure)

Tip Number 1

Familiarise yourself with the specific technologies mentioned in the job description, such as Go, Rust, and Angular. Having hands-on experience or projects showcasing these skills can set you apart during interviews.

Tip Number 2

Understand the challenges of scaling SaaS platforms by researching common issues and solutions. Being able to discuss these topics intelligently will demonstrate your readiness for the role and your proactive approach.

Tip Number 3

Engage with the Flox community on platforms like LinkedIn or GitHub. Networking with current employees or following their updates can provide insights into the company culture and values, which you can reference in your conversations.

Tip Number 4

Prepare to discuss your experience with observability tools and security best practices, as these are crucial for the role. Be ready to share examples of how you've implemented these in past projects to showcase your expertise.

We think you need these skills to ace Software Engineer – Full Stack (SaaS & Infrastructure)

Full-Stack Software Development
Proficiency in Go, Rust, Python, or similar backend language
Strong proficiency with Javascript/Typescript, particularly Angular
Experience with RESTful APIs and/or gRPC
Expertise in authentication and authorization protocols (OAuth, OpenID Connect, JWT)
Experience designing and implementing RBAC and multi-tenant architectures
Strong understanding of SQL and database optimization (PostgreSQL, MySQL, or similar)
Familiarity with payment processing systems (Stripe, Braintree, or similar)
Knowledge of observability tools (Prometheus, OpenTelemetry, etc.)
Experience with SOC2 compliance and security best practices
Familiarity with modern Angular frameworks
Knowledge of event-driven architectures (Kafka, NATS, or RabbitMQ)
Collaboration and Communication Skills
Problem-Solving Skills
Adaptability to a startup environment

Some tips for your application 🫡

Tailor Your CV: Make sure your CV highlights relevant experience in full-stack software development, particularly with SaaS platforms. Emphasise your proficiency in Go, Rust, Python, and Javascript/Typescript, as well as any experience with RESTful APIs and authentication protocols.

Craft a Compelling Cover Letter: In your cover letter, express your enthusiasm for the role at Flox. Mention specific aspects of the job description that excite you, such as working on scalable services or collaborating with product and design teams. Show how your skills align with their needs.

Showcase Relevant Projects: If you have worked on projects that demonstrate your expertise in building robust systems or optimising database schemas, include these in your application. Briefly describe your role and the technologies used to give context to your experience.

Highlight Soft Skills: Flox values collaboration and iterative improvement. In your application, mention experiences where you successfully worked in a team, participated in code reviews, or contributed to architecture discussions. This will show you fit well within their culture.

How to prepare for a job interview at Flox Dev UK Ltd

Showcase Your Technical Skills

Be prepared to discuss your experience with full-stack development, particularly in Go, Rust, or Python. Highlight specific projects where you've built scalable services or optimised APIs, as this aligns closely with what the company is looking for.

Understand SaaS Challenges

Familiarise yourself with the unique challenges of scaling SaaS platforms. Be ready to discuss how you've tackled issues related to multi-tenancy, role-based access control, and security compliance in your previous roles.

Collaborative Mindset

Emphasise your ability to work collaboratively with product managers, designers, and other engineers. Share examples of how you've contributed to team discussions, code reviews, and architecture planning to demonstrate your teamwork skills.

Prepare for Cultural Fit

Flox values iterative improvement and technical excellence. Be ready to discuss how you embody these values in your work. Also, don't shy away from mentioning your willingness to engage in fun activities like karaoke, as it shows you're a good cultural fit for a startup environment.

Software Engineer – Full Stack (SaaS & Infrastructure)
Flox Dev UK Ltd
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  • Software Engineer – Full Stack (SaaS & Infrastructure)

    Braintree
    Full-Time
    36000 - 60000 £ / year (est.)

    Application deadline: 2027-08-17

  • F

    Flox Dev UK Ltd

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