113 jobs found

🔥  Contract React Developer 📜  Outside IR35 💸  £325–£350p/d 🏡  Fully Remote Opus is partnered with a start-up. They’re scaling fast and need a Contract React Developer to help build the UIs that power real‑world systems. If you love React, care about performance, and want to work where  software meets robotics , this is one you’ll want to see. 🔍 What You’ll Be Doing Building modern UIs with  React + TypeScript Creating scalable, high‑performance frontends for data‑heavy systems Integrating with REST APIs + collaborating with cloud & robotics teams Driving UI/UX quality, architecture, and frontend standards Writing clean, tested, maintainable code 🛠️ Tech You’ll Use React TypeScript, Zustand/Redux Toolkit, React Query Vite/Webpack Tailwind CSS Jest/Vitest Playwright 📩  Apply or send your CV to (url removed)

Title: Golang Developer Length: 6-months contract Rate: £400 per day (Outside IR35) Contact: Thomas.price@forsythbarnes.com Overview We are looking for an experienced Golang Developer to join our engineering team and play a key role in building scalable, high-performance systems. You will work on modernising our architecture, developing microservices, and ensuring reliability across production environments. Key Responsibilities • Design, develop, and maintain scalable microservices using Golang • Contribute to system architecture decisions, including migration from monolith to microservices • Optimise and manage PostgreSQL databases, including indexing and partitioning strategies • Ensure application performance and reliability through monitoring, alerting, and testing • Implement and manage asynchronous communication using Kafka • Build and maintain deployment pipelines and support production environments • Collaborate with cross-functional teams...

Test Manager / Test Lead / Test Strategy / Test Approach / Test Execution / Platform Upgrade / Migration / API / Azure DevOps / 3rdParty Integration / Software Implementation / SDLC / Application Development / Remote / Desirable - Financial Services or Insurance exposure / 6-12 month contract Outside IR35 / £400 – 500 per day. One of our leading clients is looking to recruit a Test Manager / Test Lead. Location – Hybrid – Remote with travel between the UK and Channel Islands when required (approx. once or twice a month) Duration – 6-12 months Day Rate – £400 – 500 per day Outside IR35 You will be responsible for designing, developing and executing a comprehensive Test Strategy and Approach on a platform upgrade / migration programme. Experience: Test Management / Test Lead experience Test Strategy creation, design and execution Test Approach / Framework 3rd party management / integration Platform migration / upgrades Data migration / mapping SDLC /...

🔥 Contract React Developer 📜 Outside IR35 💸 £325–£350p/d 🏡 Fully Remote Opus is partnered with a start-up. They’re scaling fast and need a Contract React Developer to help build the UIs that power real‑world systems. If you love React, care about performance, and want to work where software meets robotics , this is one you’ll want to see. 🔍 What You’ll Be Doing Building modern UIs with React + TypeScript Creating scalable, high‑performance frontends for data‑heavy systems Integrating with REST APIs + collaborating with cloud & robotics teams Driving UI/UX quality, architecture, and frontend standards Writing clean, tested, maintainable code 🛠️ Tech You’ll Use React TypeScript, Zustand/Redux Toolkit, React Query Vite/Webpack Tailwind CSS Jest/Vitest Playwright 📩 Apply or send your CV to matthew.carter@opusrs.com

Kotlin Developer - Contract (Outside IR35) Remote (UK-based) £400 per day (Outside IR35) 2-Month Initial Contract We're looking for an experienced Kotlin Developer to join a fast-paced project on an initial 2-month contract. This is a great opportunity to work on a modern, high-impact platform with a collaborative and agile team. What you'll be doing Developing and maintaining Back End services using Kotlin Building scalable, high-performance applications Contributing to system design and technical decisions Writing clean, maintainable, and well-tested code What we're looking for Strong commercial experience with Kotlin Solid background in Back End development (eg JVM ecosystem) Experience with Spring Boot (or similar frameworks) Familiarity with RESTful APIs and microservices architecture Comfortable working in agile environments Ability to hit the ground running in a startup setting Nice to have Experience with cloud platforms (AWS, GCP, or Azure)...

Test Manager/Test Lead/Test Strategy/Test Approach/Test Execution/Platform Upgrade/Migration/API/Azure DevOps/3rdParty Integration/Software Implementation/SDLC/Application Development/Remote/Desirable - Financial Services or Insurance exposure/6-12 month contract Outside IR35/£400 500 per day. One of our leading clients is looking to recruit a Test Manager/Test Lead. Location Hybrid Remote with travel between the UK and Channel Islands when required (approx. once or twice a month) Duration 6-12 months Day Rate £400 500 per day Outside IR35 You will be responsible for designing, developing and executing a comprehensive Test Strategy and Approach on a platform upgrade/migration programme. Experience: Test Management/Test Lead experience Test Strategy creation, design and execution Test Approach/Framework 3rd party management/integration Platform migration/upgrades Data migration/mapping SDLC/Software Development Lifecycle/Systems Implementation Current...

SC Cleared Data Warehouse Engineer - Outside IR35 - Remote Role Overview We are seeking a skilled Data Warehouse Engineer to design, build, and maintain scalable data warehouse solutions within the Microsoft Azure ecosystem. The role focuses on developing robust data models, optimizing analytical queries, and supporting enterprise reporting through Azure SQL, OLAP technologies, and DAX-powered semantic models. You will collaborate with data engineers, analysts, and business stakeholders to ensure reliable, high-performance data pipelines and analytics platforms. Key Responsibilities Data Warehouse Development Design and develop enterprise data warehouse solutions using Azure SQL Database/Azure SQL Managed Instance/Azure Synapse Analytics. Build and maintain star and snowflake schemas for analytical workloads. Develop ETL/ELT pipelines for ingesting and transforming data from multiple source systems. Implement data partitioning, indexing, and performance...

Contract React Developer Outside IR35 £325-£350p/d Fully Remote Opus is partnered with a start-up. They're scaling fast and need a Contract React Developer to help build the UIs that power real world systems. If you love React, care about performance, and want to work where software meets robotics , this is one you'll want to see. What You'll Be Doing Building modern UIs with React + TypeScript Creating scalable, high performance frontends for data heavy systems Integrating with REST APIs + collaborating with cloud & robotics teams Driving UI/UX quality, architecture, and Front End standards Writing clean, tested, maintainable code Tech You'll Use React TypeScript, Zustand/Redux Toolkit, React Query Vite/Webpack Tailwind CSS Jest/Vitest Playwright Apply or send your CV to (see below)

.Net Developer Primarily remote - twice a month in Southampton £300pd to £350pd - Outside IR35 6 - 9 month contract Our client, a leading utilities company, are looking for an experienced Developer to join them on a contract basis They provide market leading technology and infrastructure across the UK, US, and EU providing solutions to the most complex water and wastewater issues. Due to ongoing strategic initiatives and growth in their engineering software capabilities, they need support building a Windows desktop provisioning tool This contract position offers an exciting opportunity to contribute to the design and development of robust, maintainable software solutions that support engineering workflows. We are looking for you to have experience in the following: .NET Rest API WinForms Azure Terraform IoT/telemetry knowledge is desirable Interested to hear more? I would be more than happy to discuss the role in more detail

About The Company Harnham - Data & Analytics Recruitment is a leading recruitment agency specializing in data-driven roles across various industries. With a strong reputation for connecting top talent with innovative organizations, Harnham prides itself on its deep understanding of analytics, digital marketing, and technology sectors. The company is dedicated to fostering a collaborative and inclusive environment that values continuous learning, professional growth, and excellence. Their extensive network and industry expertise enable them to provide tailored recruitment solutions that meet the unique needs of both clients and candidates, ensuring successful placements that drive business success. About The Role This is an exciting freelance opportunity for a Frontend CRO Developer based in London, working in a hybrid environment. The role offers a day rate of £300/day outside IR35, providing flexibility and the chance to contribute significantly to a growing...

Job Title: SC Cleared Network Security Engineer Job Type: Contract Location: Remote (very limited travel to data centers when needed) Day Rate: £350/day (OUTSIDE IR35) Contract Length: 6 Months SC Cleared Network Security Engineer - Role & Responsibilities Design and maintain secure network architectures, producing high-quality High-Level Designs (HLD) and Low-Level Designs (LLD) aligned with business and security requirements. Implement, configure, and optimise F5 BIG-IP solutions to ensure high availability, traffic management, and application delivery performance. Manage and support enterprise firewall platforms such as Palo Alto Networks PAN-OS, Check Point Gaia, and Juniper Junos OS, including policy configuration, upgrades, and incident response. Configure and troubleshoot Cisco IOS-based routing and switching environments, ensuring secure and resilient connectivity across enterprise networks. Operate within environments requiring active SC...

Job Title: Product Manager – CPaaS / Platform Migration Contract: 6 months (Extension Possible) Rate: £300–£350 per day (Outside IR35) Location: Fully Remote (UK based) Must Have: Customer migration experience Legacy to platform experience Tech/SaaS industry experience We’re looking for an experienced Product Manager to support a high-impact platform migration programme, focused on increasing customer upgrade volumes from a legacy CPaaS platform to a new Connect platform. This role plays a key part in unlocking blocked customer cohorts by identifying feature gaps, shaping requirements, and ensuring new releases directly enable safe and scalable customer migrations. Key Responsibilities Gap Analysis: Perform detailed comparisons between existing CPaaS functionality and the new Connect platform to identify feature gaps preventing customer migration. Cohort Prioritisation: Analyse customer and usage data to determine which missing...

Senior Solutions Architect – Contract Location: Farnborough & Corsham (hybrid) Rate: £400–£500 per day (Outside IR35) Role Senior Solutions Architect required to design and deliver secure, scalable network and infrastructure solutions across complex environments. Strong focus on architecture, security, and end-to-end delivery. Key Requirements Proven experience producing HLD & LLD designs Strong networking (BGP, OSPF, EIGRP, VLANs, STP) Security expertise (Checkpoint, Palo Alto, protective monitoring) Active Directory integration experience AWS (VPC, EC2, S3, Route 53, GuardDuty) Cisco stack (ACI, Nexus, Wireless, ISE, Prime) + F5 BIG-IP Experience working in ITIL / ISO 27001 environments Strong stakeholder engagement and delivery focus Clearance SC Cleared (DESNZ or MoD), or Willing to undergo BS7858 (4–6 weeks, funded) Additional Info Hybrid working – onsite varies by project Travel expenses covered (hotel, mileage, food)...

Are you an SC Cleared DSAT Designer looking for your next contract opportunity? We are seeking an associate DSAT Designer to support us on an upcoming 3 month, outside IR35 contract with an immediate start. Daily rate of £300-£450. We are a growing and successful multi-disciplinary consultancy, providing services primarily into the Defence, Aerospace, and Health sectors. As a member of our Associate network, you will offer exceptional technical expertise and share our core values of Excellence, Innovation, Trust and Integrity. We are looking for people experienced in: An understanding of the SAT/ADDIE methodology from Analysis to Evaluation. A detailed understanding of the application of JSP 822 and DTSMs (Defence Training Support Manuals 1 - 6). Experience in the development of DSAT Design stages 1,2 & 3 elements (or ADDIE equivalent), Experience in the design of blended learning solutions. Experience in the development of digital learning...

Location: UK or EU Remote Rate: £350 per day/€400 per day Contract: Outside IR35, 3–6 month initial contract Overview We are seeking a Data Engineer to join a consulting engagement, supporting the design, build, and optimisation of robust data platforms and pipelines. You will work closely with analysts, engineers, and stakeholders to deliver reliable, well-governed datasets and enable data-driven decision-making across client environments. Key Responsibilities Design, develop, and maintain scalable ELT/ETL pipelines on Google Cloud Platform. Model, transform, and test data using dbt; implement best practices for modular, maintainable projects. Build and optimise data solutions in BigQuery, including partitioning, clustering, performance tuning, and cost control. Orchestrate workflows using Apache Airflow, including scheduling, monitoring, alerting, and retries. Develop batch/stream processing solutions using Google Dataflow where appropriate....

Interaction / UX Designer Contract: 6 Months | Day Rate: £400/day (Outside IR35) | Location: Manchester (fortnightly onsite) Start: Immediate A leading product transformation consultancy is seeking an experienced Interaction / UX Designer to support a high-impact programme within a major UK public sector organisation. This initiative focuses on improving digital services and user outcomes, likely within the circular economy portfolio. Why this role is exciting Opportunity to design meaningful, user-centred services with real-world environmental and societal impact Work within a collaborative, multidisciplinary team delivering large-scale transformation Key Responsibilities Design and deliver high-quality interaction and UX solutions across digital services Translate user research insights into clear user journeys and interaction patterns Create wireframes, prototypes, and design artefacts to communicate ideas Collaborate with product managers,...

Contract Data Engineer £400- £500 per day outside IR35 📍 Manchester | Hybrid (2 days onsite) We’re looking for a hands-on Data Engineer to support the development of client-facing data products built on large-scale behavioural datasets. This is not a platform/infra role. It’s focused on shaping raw data into clean, usable datasets . What we’re looking for: Strong SQL + Python Experience building data pipelines / datasets (ETL/ELT) Solid understanding of data modelling and data quality AWS Experience Preferred Comfortable working with large datasets

Network Engineer Cardiff On-site 18 Months £400 to £450 Outside IR35 Your new company A large organisation based in South Wales. Your new role The role focusses on deploying Fortinet infrastructure, including Fortigate firewalls, Fortiswitches, and FortiManager. You will lead the network deployment, ensure alignment across business teams, and build strong internal relationships to provide a smooth handover once the implementation is complete. Key Responsibilities Creating Implementation plans using the LLD provided, planning, and installing local area networks (LAN), wide area networks (WAN) Implementing firewalls, switches, taps and centralised mgmt. As required on 2 new sites Testing new implementations and monitoring network performance, analysing data, and performing updates as required to ensure the best possible delivery. Following the successful build of 2 new DC's, there will be a migration exercise out of the existing DC. Review and apply...

Network Engineer - London - £300 - £400pd Outside IR35 I'm working with a consultancy who are looking to hire a Network Engineer for a 6 month rolling contract, site is London based. Skills: - Strong network security experience - Assess the security of infrastructure components - Controls and Reviews - Network monitoring This role is based in London, your lunch will be covered. 1 Stage interview process. Network Engineer - London - £300 - £400pd Outside IR35

DevOps Engineer Start: ASAP Rate: £300/day Outside IR35 Work Model: UK/EU Fully Remote Role Overview Seeking a DevOps Engineer to improve CI/CD workflows, automate environment creation, and support secure, reliable deployments across QA, staging, and production. Key Responsibilities Deploy and configure modern web applications on containerised infrastructure. Build dynamic QA environments with automated provisioning and teardown of DBs, storage, and configs. Define release, promotion, rollback, and migration processes. Manage database and object storage resources. Maintain and troubleshoot CI/CD pipelines using Scripting tools. Contribute to architecture discussions and support development teams. Communicate clearly with technical and non-technical stakeholders. Requirements 5+ years in DevOps/SRE or similar. Strong cloud knowledge (AWS or GCP). Experience building CI/CD pipelines. Understanding of containerised deployments and multi-environment setups....