Engineering - Senior Backend Engineer - Insights (Scala)

tray.io; London; On-site; GBP 70,000 - 90,000; Full time

Job summary

A leading automation platform company in London is looking for a Senior Backend Engineer to build backend services and improve their data platform. Candidates should have experience with Scala, AWS, and related tools. The role involves collaboration within a cross-functional team to optimize performance, scalability, and reliability. Join a culture of transparency and support that prioritizes growth and innovation.

Benefits

Opportunities for learning and growth

Supportive team environment

Flexible working conditions

Qualifications

• Experience with Scala (or another JVM-based language).
• An understanding of key data engineering and data analysis concepts.
• Experience designing and implementing complex systems.
• Knowledge of infrastructure-as-code technologies.
• Ability to lead technical discussions.

Responsibilities

• Building backend services and APIs for customer-facing products.
• Improving the data platform for performance and reliability.
• Collaborating with engineering teams for onboarding.
• Advising on data expertise.
• Working as part of a cross-functional group.

Skills

Scala

AWS

Data engineering

Infrastructure-as-code (Terraform)

CI/CD pipelines

Tools

Kafka

Spark

Airflow

Redshift

Elasticsearch

Job description

Social network you want to login/join with:

col-narrow-left

Client:

tray.io

Location:

London, United Kingdom

Job Category:

Other

-

EU work permit required:

Yes

col-narrow-right

Job Reference:

524fafba7cd2

Job Views:

32

Posted:

12.08.2025

Expiry Date:

26.09.2025

col-wide

Job Description:

We believe that everyone can and should automate the tools they use every day.

The Tray Platform empowers anyone to do more faster by harnessing automation with the industry-leading, low-code general automation platform.

With, citizen automators throughout organisations can easily automate complex processes through a powerful, flexible platform, and can connect their entire cloud stack via powerful APIs (without actually having to learn the APIs!).

Your Mission

Insights Squad is a cross-functional team with a focus on complex data architectures, responsible for the data platform, high performance search and messaging systems, as well as customer-facing data products and services.

Beyond your team responsibilities, you will contribute to company-wide goals around the design, implementation and maintenance of the critical systems that underpin our cutting-edge platform. You'll play a vital role in keeping our systems healthy and secure as we strive for the world-class performance, availability and reliability.

What you will do

As a Senior Backend Engineer on the team, you will be:

• Building backend services and APIs to support new and existing customer-facing products.
• Building and improving our data platform.
• Optimising and improving areas such as scalability, availability, latency, data security and data governance.
• Collaborating with other engineering teams, helping them get onboarded onto the data platform, as well as advising and sharing your data expertise.
• Working and collaborating with other department functions as part of a full cross-functional group; the squad is composed of backend & data engineers, frontend engineers, designers and product managers.

Our tech stack will see you primarily working withScalafor backend services,Terraformfor infrastructure provisioning,and AWS as a cloud provider.

For Data platform, we will always seek to use the right tools for the job, tools which currently include Kafkafor event streaming,Sparkfor data processing,Airflowfor data orchestration,Redshiftfor data warehousing, Elasticsearch for data search and otherAWS services.

About You

• Experience with Scala (or another JVM-based language, eg. Java). Experience with cloud systems platforms (eg. AWS).
• An understanding of key data engineering and data analysis concepts.
• Experience with designing and implementing systems that are complex, performant, reliable and scalable.
• Knowledge and experience with infrastructure-as-code technologies (eg. Terraform) and CI/CD pipelines.
• Ability to lead technical discussions, sharing your experience and knowledge to help make the right decisions for long-term success.

Your team will fully support you to do your best work

Our team is humble but spirited people, who take immense pride in what they do. We work in a culture built on friendship, transparency, and above all, looking out for one another.

The heart of Tray is made of generosity and trust. It is a community built on individual interactions between people who think differently; who are always available to help, to answer questions and to empower. You'll have endless opportunities to learn and grow in a fun, fast-paced, and open environment. We love to achieve things that haven’t been done before.