101 to 125 of 336 Java Jobs in the City of London

systems across complex digital programmes. Key Responsibilities Lead the design, development, and delivery of enterprise-scale digital solutions. Work hands-on with modern technologies across multiple OOP languages (e.g. Java, C#, Python, Kotlin, or similar). Define technical architecture and mentor engineering teams through best practice, clean code, and agile delivery. Collaborate closely with product, design, and delivery leads to More ❯

DATA ENGINEER – ESSTENTIAL SKILLS Proven experience as a Senior or Lead Data Engineer in a fast-scaling tech or data-driven environment Strong proficiency in Python (or Scala/Java) and SQL Deep experience with data pipeline orchestration tools (Airflow, dbt, Dagster, Prefect) Strong knowledge of cloud data platforms (AWS, GCP, or Azure) and data warehousing (Snowflake, BigQuery, Redshift) Hands More ❯

. Familiarity with AI/ML , predictive analytics , and trading platforms (IB, MetaQuotes, B2B or C-Trader). Tech Stack: Linux-first environment on AWS . Core languages: C++ , Java , Python . Large-scale data lakes and HTML5 front ends. Why Join: Shape the firm’s operational strategy with real ownership and autonomy. High-impact role with direct exposure to More ❯

and iterate Lay the groundwork for the future engineering team (tooling, processes, and architecture) ✅ Core Technical Requirements Proficient in one or more modern backend languages (e.g. Python, Go, TypeScript, Java, Rust) Strong systems design skills — you can model real-world systems and reason about scale, latency, and trade-offs Comfortable building from zero — greenfield work doesn’t scare you; in More ❯

Experience driving cross-team collaboration in complex environments. Desirable Master’s degree or PhD in a STEM discipline. Experience line managing managers. Intermediate/advanced programming skills in Python, Java, and SQL. Familiarity with modern data technologies (e.g., Couchbase, Apache Kafka, or equivalents). Experience overseeing large-scale strategic initiatives. More ❯

Maintain personal/professional training and development to meet the changing demands of the role, including all relevant regulatory and legislative training KEY SKILLS AND EXPERIENCE Strong expertise in Java, Spring Framework/Spring Boot, or related backend frameworks Solid understanding of API design, microservices, and distributed messaging architectures Solid experience in advocating for and mentoring other team members, promoting More ❯

years of experience in AI/ML research and production-level deployment . Proven ability to manage or mentor other engineers. Strong coding skills in Python, C++, Rust, or Java . Practical experience with deep learning, reinforcement learning, computer vision, or sensor fusion . Excellent communication and problem-solving skills. Desirable Extras Publications in leading AI/ML or robotics More ❯

Manager - AWS AppStream - AWS Lambda - AWS Transfer Family (SFTP) - AWS Aurora for MySQL - AWS Aurora for PostgreSQL - AWS Aurora Multi-AZ Deployments Programming and Scripting Proficient - Python Coding Abilities - Java (Basic Understanding) Network Design Competency Strong Understanding More ❯

through to production in complex environments. Strong technical understanding of real-time event-driven data processing systems including Kafka or similar frameworks. Hands-on knowledge (past or present) of Java and AWS-based cloud environments, with an understanding of scalable system design. Exceptional stakeholder management and communication skills; able to engage across senior business, product, and engineering stakeholders. Experience in More ❯

years in technical operations, reliability/SRE, support engineering, or data operations. Comfortable with a scripting language (JavaScript or Python); familiarity with a strongly-typed language (Rust/Java/C/C++) is a plus. Hands-on debugging skills: reading logs, calling API endpoints, basic troubleshooting on Linux/CLI and with HTTP tools. Experience with dashboards/metrics More ❯

cloud-based data pipelines and architectures Strong expertise in Microsoft Fabric and Databricks, including data pipeline development, data warehousing, and data lake management Proficiency in Python, SQL, Scala, or Java Experience with data processing frameworks such as Apache Spark, Apache Beam, or Azure Data Factory Strong understanding of data architecture principles, data modelling, and data governance Experience with cloud-based More ❯

delivery, including experience with systems architecture methodologies, concepts and frameworks like TOGAF. Typically, a minimum of five years work experience with architecture in some of the following technology platforms (Java, .Net, Python, Tiered Architectures, Cloud Architecture). Experience with insurance or finance based products. Applicable certifications preferred – ARCH, ASE, SDP. Preferred experience with use of Jira, Confluence, and LucidSpark. Required More ❯

diversity, and technical excellence What you'll bring Deep extensive experience of Android application development Established and highly skilled in all aspects of software engineering Strong programming skills in Java and Kotlin Solid understanding of Android architecture patterns and best practices Experience with video streaming protocols (HLS, DASH) Familiarity with ExoPlayer (bonus) Agile development experience with CI/CD pipelines More ❯

or a related technical discipline, and 5+ years of experience as a software engineer within a commercial environment. Proficiency in at least one modern object-oriented programming language (preferably Java) and willingness to learn new technologies. Proven experience developing microservices and deploying them on major cloud providers (AWS, Azure, or GCP). Working knowledge of containers and container orchestration (e.g. … of Agile software development, CI/CD pipelines, and version control systems (Git). Knowledge of unit testing, software verification, and design patterns. Nice to Have Advanced proficiency in Java and Gradle. Experience developing microservices using Spring Boot within containerised deployments (Docker/Kubernetes). Proven experience designing and scaling event-driven and distributed architectures in production environments. Proven experience … at scale. Demonstrated ability to mentor junior engineers, lead code reviews, and shape architectural decisions. Knowledge of DICOM/DICOMWeb standards or healthcare data integration workflows. Our Tech Stack Java and Spring Boot AWS DynamoDB Docker ...and more Ways of Working Operate within Motilent’s QMS, maintaining traceability and documentation as required by regulated software standards. Collaborate closely with engineers More ❯

Fimatix are a leading Agile Software Delivery Consultancy and we specialise in both Financial Services and working for HM Government clients. We are seeking a talented and motivated Java & Go Developer to help scale and evolve a modern, cloud-native platform built on AWS and Kubernetes (EKS) for one of our HM Gov clients. Key Responsibilities · Design, develop, test, and … deploy robust and scalable applications using Java and Go programming languages. · Integrate applications with AWS services, particularly AWS Simple Queue Service (SQS) and Lambdas for messaging and event-driven architectures. · Implement and maintain observability solutions, including logging, monitoring, and tracing, to ensure system health and performance. · Integrate applications with ForgeRock Identity and Access Management (IAM) suite for authentication and authorization. … reviews to ensure code quality and adherence to best practices. · Contribute to the improvement of our development processes and tooling. · Stay up-to-date with the latest advancements in Java, Go, and ForgeRock technologies. · Document technical designs, implementations, and troubleshooting steps. Essential Skills · Strong proficiency in both Java (with experience in frameworks like Spring/Spring Boot) and Go. · Experience More ❯

Senior Java Engineer (Kafka, Spring Boot, Microservices) We’re hiring a Senior Java Engineer to build secure, real-time systems using Java, Spring Boot, and Apache Kafka. You’ll design scalable event-driven microservices, collaborate across the stack, and shape a platform used in mission-critical environments. If you’re a hands-on backend engineer passionate about distributed systems, resilience … option to use a London office when you prefer in-person time. Team meetups are planned in advance, flexibility is the default. 💡 Required Experience 10+ years’ experience as a Java Backend Engineer/Senior Java Developer Proven track record building and scaling Kafka-based architectures in production Deep expertise with Spring Boot (Security, Web, and Data modules) Experience designing and More ❯

Architect: NativeScript and Java GraphQL Location : London Job Type: Contract Required Qualifications Proven experience as a software architect, with a strong portfolio of successfully delivered mobile applications and backend systems. Extensive hands-on experience with NativeScript and a deep understanding of its core principles for cross-platform mobile development. Strong proficiency in Java and experience with modern Java frameworks such More ❯

OpenAI Builders, MCP servers, etc and have experience developing proof-of-concept workflows to demonstrate the MCP platform’s capabilities. Skills: Experience in ideally two of the following Typescript, Java, Golang, Python, Scala Terraform, Kubernetes, EKS, GKE etc AWS or GCP Length: 3 months Hybrid: Paddington 2 days per week Rate: Up to £550/day IR35: Outside Interview: 1hr More ❯

+ Bonus + Bens Key skills: Experience working as a Cash Equities Trading Support Analyst FIX SQL Windows Linux Fidessa or Raptor or TMS or similar Desirable SQL Java Python Responsibilities: Support as part of a global technical team which covers Front office, Middle office users of the investment banking division on cash equities and derivatives. Level 1 and Level More ❯

designing, developing, and implementing a new Endur system. Work closely with business and technology teams to deliver innovative solutions across the trading lifecycle. Build and optimize Endur objects, JVS Java, and SQL solutions. Contribute to all stages of the project, from design and development to testing, deployment, and post-implementation support. What we’re looking for: Proven experience with Endur More ❯

VMware, Bare Metal Infrastructure etc) Containerisation/Orchestration with Kubernetes Extensive CI/CD work (ideally with Jenkins, or equivalents) Scripting/coding experience with Python, Bash, Shell or Java Strong knowledge across Automation, Networking, Linux and Security These positions range in salary offering £80-120K, dependant on experience and Seniority, and operates a hybrid working model (3 office More ❯

/System i/AS400) development using RPG (fixed & free format) and CL. Proficiency with XML, MQ Series, SFTP, and SQL. Excellent communication and documentation skills. Nice-to-Have: Java development on IBM i. Experience with Control-M job scheduling. Familiarity with Turnover change control tools. More ❯

Strong Linux system administration knowledge Experience maintaining Microsoft SQL Server Exposure to AWS (preferred) Experience with monitoring systems such as Grafana/Elasticsearch Coding experience, particularly in Python or Java Desired Traits Ability to perform effectively in high-pressure trading environments, acting quickly and with urgency Strong communication skills, with the ability to bridge trading and technology Curiosity and appetite More ❯

Experienced in building complex, real-time front-end systems. Comfortable working in agile, collaborative environments. Interested in financial technology and interoperability standards. Nice to have: React.JS and .Net or Java More ❯

architecture alongside modern Android best practices. Ensure high-quality, maintainable code and scalable solutions. Required Skills & Experience Proven experience leading Android teams and mentoring developers. Deep expertise in Kotlin , Java , RxJava , and Jetpack Compose . Strong understanding of Android architecture patterns (including VIPER , MVVM, and Clean Architecture), asynchronous programming, and UI/UX best practices. Hands-on experience with CI More ❯