Samsara★3.6 (32)· London

Samsara interns work on the Connected Operations Cloud, building backend infrastructure in Golang, web clients with TypeScript/React and GraphQL, mobile with React Native, or embedded software for IoT devices. Projects involve scaling data ingestion, real-time data processing, and creating actionable insights for industries like transportation and agriculture.

Backend engineers use Python, Django, Django-REST-framework, GraphQL (Graphene), Celery, Postgres, and AWS (Packer, Consul, Terraform). They build and maintain the AI-driven energy management platform that powers utilities and optimises renewable generation. The global engineering team is around 1,400 people.

Reward Gateway★4.4 (11)· London

Define and champion the architecture vision for the Engagement Business Unit, working with global architecture and engineering leaders. The role involves leading architecture governance, establishing reusable patterns, and driving the adoption of AI-enabled engineering practices across APIs, microservices, event-driven systems, and data streaming platforms like Kafka. You'll partner with product and engineering teams to deliver scalable cloud-native applications and improve CI/CD pipelines and software delivery practices.

Senior WordPress Developer role: build bespoke WordPress sites and apps using PHP, MySQL, ACF, WooCommerce, Gutenberg, JavaScript (ES6+), SASS/SCSS, Git, Composer, npm, Vite, CI/CD. You’ll also drive AI-assisted development (RAG, MCP, Copilot) and mentor junior developers.

Spotify★4.1 (116)· London

You will work with React, TypeScript, Java, GraphQL, PostgreSQL, and Google Kubernetes Engine (GKE) to build end-to-end solutions. The team builds Groove, a platform that helps thousands of employees plan, coordinate, and deliver work across Spotify.

You will work with Java, Spring Boot (Spring Batch, Spring Cloud), microservices, REST APIs, GraphQL, Azure Cosmos DB, and Confluent Kafka. The team builds AI-driven digital products and services that support employees and HR stakeholders.

Working with Python, SQL, AWS, and APIs like GraphQL, gRPC, and REST, you will productise ML models and manage data workflows in cloud infrastructure. The HealthTech team focuses on ethical AI to improve patient care outcomes.

MAREX★3.2 (6)· London

You will work with C# .NET, JavaScript, TypeScript, React, Node.js, GraphQL, Docker, NoSQL/RDMS databases, and AWS cloud services (ECS/EKS, Lambda, S3, RDS, API Gateway). The team builds and maintains applications to strengthen the company’s market-making capabilities and improve operational efficiency across multiple asset classes and geographies.

Senior Software Engineer designs and maintains backend services and APIs using Java, Python, and Node.js, working with microservices and Spring Boot. The role involves building REST, GraphQL, and SOAP APIs, using relational and NoSQL databases (MySQL, PostgreSQL, Oracle, Redis), and performing cloud-native development in AWS environments. This position supports financial systems and integrations within the leading global business aviation company, Vista.

Build and support scalable enterprise integrations using Workato, APIs, webhooks, REST, SOAP, GraphQL, OAuth, JSON, XML, SQL, JavaScript, Python, and Workato formulas. Integrations span finance, HR, CRM, document management, and analytics platforms. No team size specified.

Work with TypeScript, LangChain, React, GraphQL, Prisma, Temporal, and LlamaIndex to build AI agents that automate high-stakes banking workflows. You will own features end-to-end, architecting a core platform that orchestrates AI, customers, and humans to replace legacy banking bottlenecks.

Design data architectures using AWS, Azure, Kafka, Kinesis, Airflow, NoSQL (MongoDB, DynamoDB, HBase, CosmosDB), GraphQL, Snowflake, DataBricks, SQL, and Python. You will drive the technical direction of Digital Identity & Fraud products at LSEG’s Risk Intelligence division, mentoring team members and aligning architecture with enterprise strategy.

Build scalable backend services using modern Java, TypeScript, React, and Next.js, and design GraphQL/gRPC APIs with PostgreSQL on the Monaco squad. You will create internal products enabling Spotify teams to launch, configure, and manage Premium offers, subscriptions, and pricing.

You'll work with Python (Django/FastAPI), React, TypeScript, PostgreSQL, Azure, Docker, and CI/CD to build customer-facing applications and APIs. The team is part of Oritain, a product origin verification company.

STINT★3.6 (65)via Jack & Jill· London

Build and maintain core systems using Python (Django), Go, Flutter, GraphQL, PostgreSQL on AWS/EKS with DataDog and GitLab. You’ll join a cross-functional product pod powering Stint’s platform that combines a flexible student workforce with AI for hospitality brands.

You will work with Python, SQL, PostgreSQL, Dagster, Git, and CI/CD tools like GitHub Actions, plus Docker, Kubernetes, and REST/GraphQL APIs. This computer-vision startup builds scalable data pipelines and infrastructure to power next-generation products across cloud, AI, and embedded systems.

Spotify★4.1 (116)· London

As a Fullstack Engineer on the Monaco squad, you'll build end-to-end features with Java 17+, TypeScript, React, Next.js, and PostgreSQL, and develop GraphQL and gRPC APIs for Spotify's subscription business. You will create internal tools that enable teams to launch, configure, and manage Premium offers globally.

You will work with Angular, TypeScript, HTML5, Java, Spring Boot, REST/GraphQL, MongoDB/MSSQL, Kafka, and AI coding agents like Copilot and Devin. This role is on Citi’s Banking Technology team building a microservices-based web platform for senior bankers as part of the Opus Capital Management strategic transformation.

Citi★3.9 (21k)· London

Design and build enterprise web application platforms using Angular, TypeScript, Java, Spring Boot, REST/GraphQL, MongoDB/MSSQL, and Kafka. The Banking Technology team delivers the Opus Capital Management strategic transformation, building a microservices platform used by senior bankers globally. This VP role leads a small, high-autonomy squad within an agile delivery team.

Boden★3.1 (112)· London

You will work with AWS (Lambda, SQS, API Gateway, DynamoDB), REST/GraphQL APIs, webhooks, OAuth, and event-driven microservices. This Operations Technical Lead role drives technical direction for services and integrations that support Boden’s order and fulfilment journeys. You will manage a team of developers and quality engineers.

You'll build Python-based backend services and data pipelines with Docker, Kubernetes, and Terraform, integrating enterprise systems like SAP and Oracle ERP while handling multi-terabyte datasets. Magentic develops agentic AI systems for supply chain and procurement workflows, targeting enterprise customers with end-to-end feature ownership from architecture through deployment and iteration.

Python, Django, TypeScript, React, GraphQL and Heroku. The company builds a platform for global workforce/vendor management, trusted by major brands. You will lead 12 Senior Engineers across 3 teams, remaining up to 40% hands-on with backend architecture.

This role requires expert-level Python, Java, Kotlin, and Typescript to build APIs (REST, GraphQL, gRPC) within microservices, distributed systems, and event-driven architectures on AWS (Lambda, ECS, DynamoDB, SQS, S

Design and build data ingestion pipelines, ETL/ELT processes, and scalable data models using Python, SQL, Apache Spark, Kafka, Airflow, Dagster, Docker, and Kubernetes. The role contributes to a scalable data platform powering analytics, business intelligence, and product development.

You will work with SQL, Python, Apache Kafka, Apache Spark, PostgreSQL, MySQL, Git, CI/CD, Docker, and Kubernetes. You will develop and maintain modern data platforms—building data pipelines, ETL/ELT processes, and scalable data models—to support reporting, analytics, and operational systems for a well-established UK organisation.