Senior Full Stack Engineer, JVM, Kotlin

🕒 September 19, 2025

🏢🏡 London – Hybrid

⏰ Full Time

🟠 Senior

🧑‍💻 Full-stack Engineer

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Simple Machines

WebsiteLinkedInAll Job Openings

11 - 50 employees

🤖 Artificial Intelligence

💼 Consulting

Artificial Intelligence • Consulting

Simple Machines is an Australian based firm of expert consultants at the intersection of data architecture, data engineering, data science and software application development. They specialize in architecting and engineering highly performant, distributed, data driven platforms and machine learning applications that perform at massive scale. Simple Machines partners with enterprises, governments, and global technology companies to put their data to work in the real world. The company is a Preferred Confluent consulting and training partner, offering specialist consulting services in Kafka, and is also partnered with Databricks and Lightbend, providing training and consulting services in Spark and Scala.

📋 Description

• Responsible for design and technical development of backend services for a highly scalable marketing platform. • Responsible for designing the APIs, applications, and infrastructure the team develops, and documenting the technical requirements and design for the client. • Responsible for end-to-end delivery and support, including build, automation, deployment, and operations, for everything that is developed. • Partner with client stakeholders, and team members, to gather business requirements, collaborate on design decisions, and translate them into technical and design requirements. • Operate within an iterative delivery team using Agile delivery tools and practices. • Hybrid remote and in-person collaboration with the delivery team and client stakeholders.

🎯 Requirements

• What we are looking for: • A consultative approach to software development and software engineering. • Core foundation in programming, especially in JVM languages (particularly Kotlin or Java). • Experience designing and implementing data-driven APIs. • Exposure to frontend development (particularly React.js, Tailwind, REDUX, Typescript) • Past project experience with large scale webservices. • Cloud infrastructure experience with AWS and/or Google Cloud, Azure, etc. • Infrastructure-as-code experience, such as with Terraform or Cloud Formation. • In-depth experience with unit and integration testing, and test automation generally. Ideally TAA and/or BDD • Experience working with SQL databases in the context of implementing data-driven APIs, and designing database schemas and queries to meet business requirements. • A passion and proven background in picking up and adopting new technologies on the fly. • Exposure to Scala, or functional programming generally. • Exposure with highly concurrent, asynchronous backend technologies, such as Ktor, http4k, http4s, Play, RxJava, etc. • Exposure with DynamoDB or similar NoSQL databases, such as Cassandra, HBase, BigTable, or Cosmos DB. • Exposure with Git workflows, and the ability to tailor the workflow to project needs. • Exposure with containerised application deployment using Docker, Amazon ECS, Kubernetes, etc.

🏖️ Benefits

• What We Offer in the UK: • Salary: Competitive salary and benefits package. • Join a fast growing team - 30% growth in the last 12 months. • Hybrid working environment, 1-2 days in the London office. • Pension: Up to 5% employer contribution, matching up to a 5% employee contribution, for a total of up to 10%. • Annual Leave: 4 weeks standard + 1 week additional annual leave over Christmas shut down period, plus public holidays. • Health and Wellbeing Allowance: £1,250 allowance per year to be used for any food and non-alcoholic beverages during business hours, healthcare, gym memberships, sporting goods and accessories, and any wellness appointments. • Professional Development: £1,500 annual budget for training, courses, and conferences, with potential for additional funding. • Certifications: £2,500 annual budget for certifications and related courses. • Equipment Allowance: £1,500 for UK team members, plus Apple MacBook Pro laptops and necessary accessories. • Company Sick Leave: 10 days per annum, includes coverage for employee’s family. • Antenatal Support: Paid time off for antenatal appointments, including classes recommended by health professionals. • Terminal Illness Benefit: Three months' continuance of salary at full pay.