Senior Software Engineer (Java / Kotlin)

Senior Software Engineer (Java / Kotlin)

Full-Time No working from home possible
Runa

At a Glance

  • Tasks: Architect and deploy software services that transform global payments.
  • Company: Join Runa, a pioneering tech company revolutionising digital payments.
  • Benefits: Enjoy competitive salary, hybrid work, L&D allowance, and generous holiday.
  • Other info: Mentor junior engineers and grow your career in a dynamic environment.
  • Why this job: Make a real impact in the payments space with cutting-edge technology.
  • Qualifications: Proficient in Java or Kotlin, with experience in event-driven architectures.

Runa is pioneering a first-of-its-kind payment rail that enables the seamless, global money movement at scale. Legacy banking and payment infrastructure struggles to support the demands of today's low-volume, high-velocity payouts, leading to inefficiencies in global payouts. Businesses worldwide send over $20 trillion annually in rewards, remittances, and disbursements often incurring costs of up to 50% per transaction and subjecting recipients to lengthy delays.

Runa transforms this landscape by providing a new digital payments infrastructure that empowers businesses to send digital money instantly and cost-free to anyone, anywhere. The Runa API empowers thousands of businesses to make payments to 5 billion+ consumers in 190+ countries instantly to cards, wallets, bank accounts and gift cards. Leading companies such as Sodexo, TopCashback, Perkbox, Sweatcoin, Coinbase, and Globetopper rely on Runa to facilitate instant, flexible global payouts to tens of millions of consumers.

The Role

As a Senior Software Engineer, you will be responsible for architecting, implementing and deploying software services from end to end. You'll produce clean, scalable, and reusable code to build products which will have a big impact on our customers.

You will have the opportunity to work with a modern, event-driven architecture running on containerised cloud infrastructure, whilst guiding and mentoring more junior engineers in the team.

Our Tech

This role will be building with Java and Kotlin, leaning heavily on event-driven architectures to move money reliably at scale. Services will run in containers on EKS, backed by both SQL and NoSQL databases on AWS.

If you're deep in the Java and Spring ecosystem (Spring Boot, Spring REST, Spring Data, resilience patterns like circuit breakers), you'll feel right at home. Experience with event-streaming and messaging tools like Kafka, EventBridge, SNS or SQS, Kubernetes tooling such as Helm, or infrastructure as code with Terraform will help you ramp up even faster.

What Excites You

  • Contributing towards the design, delivery and deployment of large scale, complex projects which are used heavily by thousands of people with high throughput.
  • Using modern technology like event-driven microservice architecture and container orchestration on AWS.
  • Mentoring more junior members of the team to help support their growth and development and help scale the team by leading on technical interviews.
  • Being a subject matter expert on technology and domain-specific problems, and taking ownership of software services from end to end.
  • Improving responsiveness and overall performance of our web services.
  • Getting stuck into problems at the heart of how money actually moves, in the payments space.

What Excites Us

  • Proficiency in at least one of Java, or Kotlin, with a strong track record of architecting and developing new services and features end to end.
  • Experience building applications with event-driven architectures.
  • Familiarity with containerisation (e.g. EKS or similar).
  • Knowledge of cloud platforms, ideally AWS.
  • Working knowledge of both SQL and NoSQL databases.
  • The ability to take ownership of design and architecture of large scale systems and developing API heavy software solutions without the need for guidance.
  • A passion for promoting software engineering best practice, guiding and mentoring more junior engineers to deliver clean, scalable, and reusable code.
  • Proactively contributing to the continual improvement of our engineering processes.

Bonus points for:

  • Deep experience with Java and the Spring ecosystem (Java 17+, Spring Boot, Spring REST and Spring Data, resilience patterns such as circuit breakers).
  • Experience with event-streaming and messaging technologies (e.g. Kafka, EventBridge, SNS, SQS).
  • Familiarity with Kubernetes tooling such as Helm.
  • Experience with infrastructure as code, ideally Terraform.
  • Experience within the payments domain.

What's in it for you

  • We have a hybrid structure with the requirement of 3 days a week at our London Office (Shoreditch)
  • £1,000 annual L&D allowance to invest in mastering your craft, including accredited studies. Plus 5 L&D days per year
  • 25 days holiday + public holidays
  • Runa Reset Days - Runa closes on the first Friday of each quarter for a well-deserved, Reset Day
  • Summer Hours - In the month of August, we log off at 3pm on Fridays.
  • Work from anywhere for up to 45 calendar days a year
  • Participation in the Employee Options pool giving you ownership in Runa
  • Private Medical + Dental Health Insurance with Bupa
  • Enhanced parental leave for all new parents, up to 16 weeks full pay

We are currently working towards salary transparency however we are not there just yet so our talent team will discuss this during the initial call to ensure that the right expectations are given.

The Interview Process

Call with Talent Lead

System Design Interview

Coding Interview

Values Interview

Diversity and Inclusion

We are committed to providing a hiring and working experience in which all people feel they are equally respected and valued regardless of race, religion, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status.

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Senior Software Engineer (Java / Kotlin) employer: Runa

Runa is an exceptional employer, offering a dynamic work culture that fosters innovation and collaboration in the heart of Shoreditch, London. With a strong focus on employee growth, Runa provides generous learning and development allowances, flexible working arrangements, and unique benefits like Runa Reset Days and summer hours, ensuring a healthy work-life balance while empowering employees to make a significant impact in the evolving payments landscape.

Runa

Contact Details:

Runa Recruitment Team

StudySmarter Expert Advice🤫

We think this is how you could land Senior Software Engineer (Java / Kotlin)

Join Local Tech Meetups

Get out there and mingle with fellow developers by joining local tech meetups. It’s a fantastic way to meet people who might be working at Runa or know someone who does. Plus, you can pick up some trendy tech skills and trends while you're at it!

Contribute to Open Source Projects

Show off your coding chops by jumping into open-source projects. Not only does this give you practical experience, but it also gets you noticed in the dev community. You'll create a killer portfolio that speaks volumes about your skills to Runa.

Tap into Online Developer Communities

Don’t underestimate the power of online developer communities like GitHub, Stack Overflow, and even Reddit. Participate in discussions, share your projects, and build your visibility. We can often find opportunities through these channels that can lead to a full-time gig at companies like Runa.

Explore Job Boards Specifically for Tech Roles

Keep your eyes peeled on job boards that focus on tech roles. Sites like TechCareers or Stack Overflow Jobs can often have listings for companies like Runa that might not show up on broader job sites. Make it a habit to check these regularly, and don’t hesitate to apply directly through our website!

We think you need these skills to ace Senior Software Engineer (Java / Kotlin)

Java
Kotlin
Event-Driven Architecture
Containerisation (EKS)
AWS
SQL Databases
NoSQL Databases

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 Runa.

Craft a killer cover letter:Your cover letter is your chance to stand out—make it personal! Explain why you want to work at Runa 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 Runa

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 Runa 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.