Principal Site Reliability Engineer
Principal Site Reliability Engineer
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Job Description
Principal Site Reliability Engineer - Core Systems
Hybrid in London or Remote within the UK
The company
Imagine a world where every small business has the power to thrive. Thats the world were building at iwoca. Small businesses arent just statistics theyre the heartbeat of our communities the character of our high streets and the engine of our economy. Since 2012 weve revolutionised how these businesses access finance turning what was once a lengthy frustrating process into something remarkable: funding thats fast flexible and actually works for modern businesses.
Our impact speaks for itself: weve provided billions in funding to over 150000 businesses across Europe making us one of the continents leading fintech innovators. But were just getting started. Our mission To empower one million businesses with the financial tools they deserve.
We combine cutting-edge technology and data science with genuine human understanding to make finance feel less like a barrier and more like a superpower. Whether its managing cash flow or seizing unexpected opportunities we ensure businesses get the funds they need often within minutes.
The team
Youll join the Core Systems team who optimise development build data systems and continuously improve iwoca products. They follow Agile-inspired processes using continuous integration and delivery so that features go live in days or weeks not months or years.
The role
Youll influence iwocas tech strategy to make our systems more reliable and as we get closer to our goal of funding one million businesses. The role will focus on complex data systems and flows that power multiple internal products and services.
Our biggest reliability challenges arent sudden spikes in users or data volume - theyre the accumulating complexity interconnectivity and constant evolution of these internal systems. So youll need to empathise with different teams pressures have a practical problem-solving mindset and do some far-sighted SRE work.
Youll combine hands-on work with technical leadership to:
Influence without authority- understand our systems advocate for reliability improvements and build relationships with other teams and tech leads to help them prioritise and deliver reliability changes.
Lead the adoption of new practices and tools - whether through prototypes RFCs working groups or direct implementation. We want you to develop our engineering culture to think about reliability before during and after incidents.
Collaborate with stream-aligned teams to design and deliver system improvements that benefit multiple internal consumers not just a single application.
The projects
Some example projects might be:
Set up load performance and stress tests to understand how our bespoke modelling system can scale and identify non-linear behaviours to improve.
Work with development teams to design and implement controls that prevent common failures - like request killers or circuit breakers and modify our incident-response process.
Unpick some coupling in the production database
The requirements
Essential:
Experience designing building and scaling data-intensive systems and ideally with Kubernetes PostgreSQL hosted in AWS RDS and Snowflake.
A track record of shaping incident processes on-call practices or sharing reliability ownership across multiple teams.
Deep understanding of site reliability principles and applying them to databases including observability and limiting the impact of long-running or resource-heavy queries.
Experience with infrastructure automation like setting up monitoring and alerting for pipelines
Bonus:
Strong academic background in maths physics computer science engineering or a related field.
Active in tech or open-source communities with a passion for sharing knowledge and inspiring others.
An open mind and the flexibility to approach challenges from different angles.
Experience with observability platforms such as DataDog.
Experience with managing infrastructure management using Terraform.
Familiarity Python SQL Go.
The salary
We expect to pay from 100000 - 140000 for this role. But were open-minded so definitely include your salary goals with your application. We routinely benchmark salaries against market rates and run quarterly performance and salary reviews.
The culture
At iwoca we prioritise a culture of learning growth and support and invest in the professional development of our team members. We value diversity in thought and skill and encourage you to explore new areas of interest to help us improve our products and services.
The offices
We put a lot of effort into making iwoca a brilliant place to work:
Offices in London Leeds and Frankfurt with plenty of drinks and snacks
Events and clubs like bingo comedy nights yoga classes football etc.
The benefits
Flexible working.
Medical insurance from Vitality including discounted gym membership
A private GP service (separate from Vitality) for you your partner and your dependents.
25 days holiday an extra day off for your birthday the option to buy or sell an additional five days of annual leaveand unlimited unpaid leave
A one-month fully paid sabbatical after four years.
Instant access to emotional and mental health support.
3% Pension contributions and share options.
Generous parental leave and a nursery tax benefit scheme to help you save money.
Cycle-to-work scheme and electric car scheme.
Two company retreats a year weve been to France Italy Spain and further afield.
And to make sure we all keep learning we offer:
A learning and development budget for everyone.
Company-wide talks with internal and external speakers.
Access to learning platforms like Treehouse.
Required Experience:
Staff IC
Employment Type
Full-Time
