Java software engineer jobs in HarpendenCreate job alerts

Lead Rust Engineer Up to 120,000/130,000 London Low Latency | Async Rust | Tokio Drones We have a new and exclusive partnership with one of the most exciting scale-ups in Europe, who are looking to double in size their engineering team. They have a valuation exceeding 2 billion Euros. The company builds aerial intelligence hardware and software. They're main focus is the manufacturing of UAV's. Alongside this, they are also developing bleeding edge software that provides actionable insights in defense, security and professional services. The Rust Team: The company are building a new Rust Engineering pod in the UK, and are hiring several Rust Engineers and a Team Lead. This engineering team are focusing on building a greenfield command and control center, designed specifically for unmanned systems. What you'll be doing: • Architect, build, and support reliable, high-performance systems for coordinating swarms and handling sensor data., • Develop streamlined communication methods and real-time data processing tools tailored for robotic platforms., • Work hand-in-hand with multidisciplinary teams to connect backend infrastructure with robotic applications and sensor arrays., • Enhance overall system efficiency, expandability, and dependability within distributed robotic setups. Experience you'll need: • Production experience with Rust, or contributions to production grade open source repos. 2+ Years., • Experience working with Tokio, or other asynchronous frameworks such as async.std or Smol., • Ideally a background in a core programming language such as C, C++, or Core Java. Candidates from functional backgrounds such as Scala, Erlang or Clojure are also encouraged to apply., • Experience developing low-latency, high throughput systems. Nice to have: • Experience working with drones or robotics, • experience working with microcontrollers

We are looking for a Senior Software Engineer who will be responsible for designing, developing, and deploying high-quality software solutions. You will work on complex software projects, contributing to the architecture, development, and improvement of software systems. This role involves mentoring

Brio Digital are supporting a consultancy on a major NHS digital programme and are looking for experienced Java Developers to join an established engineering team. You will contribute to the design, build, and delivery of complex, high-availability digital solutions within a large-scale NHS environm

We are seeking a highly skilled Java Software Engineer's to work on a UK Government programme. Strong recent experience with Java 20 or above. Experience with software patterns.

A Java Developer (2-5 years experience) designs, codes, tests, and maintains scalable Java applications, collaborating with teams, debugging issues, and using frameworks like Spring/Hibernate, focusing on clean, efficient, object-oriented code, participating in the full SDLC. Number] years of profes

We are seeking multiple Senior Java Engineers to join the programme engineering team. Strong, demonstrable experience as a Senior Java Engineer in a production environment. Senior Java Engineers (12x) — Contract - (Financial Services / Investment Management).

Strong Java development experience (Java 11+). We’re partnering with a leading global financial institution seeking experienced Java Contractors to join high-impact engineering teams delivering scalable, mission-critical platforms.

SOW & Deliverables - Develop and maintain scalable Java-based services and applications - Build and support Spring Boot microservices - Work with Kafka and event-driven architectures - Contribute to agile delivery using Test-Driven Development (TDD) principles - Support engineering best practices a

Role Overview - Location: Milton Keynes (Once per month onsite /Flexible working available) - Package: Up-to 95,000 Basic, bonus scheme + benefits - Industry: Fintech / Digital Banking What You’ll Be Doing - Leading the design and delivery of full stack features across backend and frontend syst

Key Responsibilities - Develop and maintain scalable digital services and applications - Work across backend and full-stack development activities using modern technologies - Write clean, maintainable code following Test-Driven Development (TDD) principles - Collaborate with multidisciplinary teams

HCLTech is a global technology company, home to 219,000+ people across 54 countries, delivering industry-leading capabilities centered on digital, engineering and cloud, powered by a broad portfolio of technology services and products. Must Have – Java, Low-latency, financial services background,

Lead communities of practice across Software Engineering to promote awareness and adoption of new technologies. As a Lead Software Engineer in Wholesale Payments, FX Payments Tech, you will play a pivotal role in designing and delivering secure, scalable technology products. Skilled in all aspects o

Bachelor’s or Master’s degree in Computer Science, Engineering, or related field, or formal training/certification in software engineering concepts. As a VP Engineer in the Markets CRM Platform team, you will lead a global group of engineers to design and deliver advanced technology solutions. A

We’re looking for an experienced Java Developers to join a fast-paced engineering team on an initial 6-month contract (Outside IR35). Strong commercial experience with Java. Ideal for a contractor who can hit the ground running and deliver high-quality Java solutions with minimal oversight.

Concepts like the CAP theorem aren’t just theory here—they’re part of our daily engineering conversations. RxJava, Groovy, Couchbase, and Kafka, built using Terraform, running in Kubernetes on Azure utilising GitHub Actions pipelines. Design and implement end‑to‑end systems using your deep

Strong experience with Java 8+. Concepts like the CAP theorem aren't just theory here-they're part of our daily engineering conversations. RxJava, Groovy, Couchbase, and Kafka, built using Terraform, running in Kubernetes on Azure utilising GitHub Actions pipelines.

As a Software Engineer III at JPMorgan Chase within the Accelerator business, you are the heart of this venture, focused on getting smart ideas into the hands of our customers. We primarily use Jvm based languages (Java/Kotlin) but we also have parts of the platform that use other languages as neede

Design, develop, and maintain scalable Java applications.

As a Lead Software Engineer in the Payments team, you will develop technical solutions for a fully cloud-based payments application, focusing on high performance and low latency. Lead communities of practice across Software Engineering to promote new and leading-edge technologies. Execute creative s

As a Software Engineer, you will build capabilities to improve the quality of scientific research. As a Software Engineer, you will build capabilities to support researchers in sharing new knowledge with the broader research community. Demonstrate some proficiency in most of these technologies: Java

We have an exciting and rewarding opportunity for you to take your software engineering career to the next level. Actively contributes to the engineering community as an advocate of firm‑wide frameworks, tools, and practices of the Software Development Life Cycle. As a Senior Python Engineer at JP

If you have several years commercial experience working with Core Java and are looking for a new challenge with autonomy over your projects and work, apply now for immediate consideration in this Java Software Engineer opportunity!. Due to an exciting pipeline of upcoming projects, they are looking

RxJava, Groovy, Couchbase, and Kafka, built using Terraform, running in Kubernetes on Azure, utilizing GitHub Actions pipelines. Design and implement end‑to‑end systems using deep JVM and Java ecosystem expertise. Apply SOLID principles and cohesive design to build scalable software.

This is a hands‑on engineering role requiring strong backend development experience in modern Java ecosystems, with a focus on scalable, event‑driven architectures. Collaborate with architects, product owners, and other engineers in an Agile environment.

A global technology company is seeking a Senior Software Engineer I to define and shape the product and technical foundations for an investment product.

A leading global financial services firm is looking for a Lead Software Engineer to design and deliver secure technology solutions in an agile environment. Key qualifications include a Bachelor’s degree in Computer Science, proficiency in Python and Java, and experience in a corporate setting.

A leading EdTech company based in London is seeking a Senior Software Engineer to design and build scalable systems. In this role, you'll work on backend architecture, APIs, and data systems while collaborating with a global engineering team. Ideal candidates should have strong experience with Java,

Lead communities of practice across Software Engineering to promote awareness and adoption of new technologies. Demonstrated proficiency in software applications and technical processes within a technical discipline (such as cloud, artificial intelligence, machine learning, or mobile). Execute creat

We are looking to recruit an experienced Java Software Engineer who has experience of developing IT Security Applications. In this role you will working in Java on the development of new IT Security Applications to protect Microsoft Architectures integrating with Defender and Sentinel providing busi

Senior Front-end Software Engineer (React, Bazel and Java). The engineering group is migrating its entire client platform application into a Bazel‑based monorepo, so experience in that environment is highly valued. Improve testing practices across the engineering organisation.

You will apply a software engineering mindset to problems, whether that’s provisioning services, writing code or writing automation tools and scripts. You will strive to do things better and faster, eliminating waste and applying this across the entire software delivery lifecycle for both internal

Senior Software Engineer I - Backend (Java) - Business Accounting Integrations and Reporting. We build the integrations that allow businesses to seamlessly connect their accounting software with Wise, streamlining their reconciliation processes and improving financial reporting. The team is made up

Apply SOLID principles and cohesive design to build scalable software. Mentor and support fellow engineers, fostering a culture of continuous learning. Share knowledge across the wider engineering community.

Java Software Developer to join their growing team in the United Kingdom. Candidates should have experience with complex Java solutions and AI coding tools.

Bachelor’s or Master’s degree in Computer Science, Engineering, or related field, or formal training/certification in software engineering concepts. As a VP Engineer in the Markets CRM Platform team, you will lead a global group of engineers to design and deliver advanced technology solutions. E

A leading technology consultancy in the UK is seeking Software Engineers of varying seniority for long-term projects. Successful candidates will have experience in Java, JavaScript, or Python, along with proficiency in DevOps tools like Docker, Kubernetes, Terraform, Ansible, and AWS.

You will join and collaborate with a global team of technologists at all stages of the software development pipeline creating high‑quality software solutions in an environment that encourages curiosity and innovation, grows talent, and applies and sharpens your multi‑faced software engineering s

Leads communities of practice across Software Engineering to drive awareness and use of new and leading‑edge technologies. Formal training or certification on software engineering concepts and 5+ years applied experience. Executes creative software solutions, design, development, and technical tro

A global financial services firm in Greater London seeks a Lead Software Engineer to design and enhance innovative data engineering solutions. You'll lead software development, improve operational stability, and drive technical innovation while working in an inclusive team culture.

Concepts like the CAP theorem aren't just theory here-they're part of our daily engineering conversations. RxJava, Groovy, Couchbase, and Kafka, built using Terraform, running in Kubernetes on Azure utilising GitHub Actions pipelines. Design and implement end-to-end systems using your deep JVM and j

As a Senior Java Engineer at Send, you’ll play a crucial role in building and evolving our Insurance platform. What You’ll Be Doing as a Senior Java Engineer. If you’re an experienced Java Engineer ready to take on your next challenge and thrive in a dynamic, fast-paced environment, we’d lov

As a Lead Software Engineer at JPMorganChase within Asset and Wealth Management, you are an integral part of an agile team that works to enhance, build, and deliver trusted market‑leading technology products in a secure, stable, and scalable way. Leads communities of practice across Software Engin

Our client - a global automotive systems industry leader - is looking to hire an AI Software Engineering Team Lead to join them on an initial 6-month contract, with a view to transition to permanent employment. Customer facing software/platform re-write experience. Deep technical expertise in modern

Leads by coding: delivers hands‑on Lead Software Engineer features and platform capabilities in Java and Python, setting the bar for engineering quality. Formal training or certification on software engineering concepts and 5+ years applied experience. As a Lead Software Engineer at JPMorganChase

Hunter Bond is seeking a Software Engineer (Java) in London, offering up to £120,000 plus bonus and package. The role involves working on high-performance financial platforms and complex engineering challenges in a collaborative, friendly environment.

You’ll write high-quality production Java, but you’ll also care deeply about the experience of engineers building on what you create. Join the Engineering Enablement team at the heart of Quote Modernisation the most significant engineering transformations Quote has undertaken in recent years. Ap

As a Staff Engineer, you'll work across multiple engineering teams, driving technical design, elevating engineering standards and ensuring sound decision-making across the broader Sainsbury’s Tech ecosystem. Then you’ll realise that ours is a modern software engineering environment because it ha

You have a product engineer mindset and a track record of delivering high quality software that adjusts to business and product needs to provide a great user experience in a timely manner. We're looking for people who have a curious mindset, thrive in collaborative squads, and are passionate about b