Mainframe Developer With Cics Webservices Job Description Role Overview
Role / Job Title: Mainframe Developer with CICS Webservices
Work Location: London
Mode of Working: Hybrid
Office Requirement (if hybrid): 2 3 days a week
Key Skills Required
Mainframes
CICS Webservices
Required Skills
Experience working in ZOS Connect EE and DB2 REST, with extensive knowledge in CICS webservices.
Development experience using FileAid, Xpeditor, IBM Explorer for z/OS, and Visual Studio.
Proficient with SOAP, WSDL, and JSON, with a comprehensive understanding of SOA and RESTful APIs.
Experience working with code repositories, bug tracking tools, and wikis. Tools include GitLab, Endevor, JIRA, and Confluence.
Knowledge of different security integration patterns such as basic authentication, client authentication (mTLS), and OAuth (JWT).
Experience with DevOps and Agile methodologies and associated toolsets and practices, including CI/CD and Jenkins.
Desirable Skills / Knowledge / Experience Option 1: Java-Based Skills
Java skill set.
Strong foundation in Java, including OOP and functional programming (Java 8+).
Familiarity with Spring Boot annotations, configuration, and how it simplifies Spring application setup and deployment.
RESTful API development experience.
Option 2: Integration & Middleware Skills
Hands-on experience using DataPower appliances.
Development experience using XSLT, Gateway Script, and XPath.
Java Engineer | Glasgow based | Must have Azure experience! | £550-£700 (Inside IR35) | 6 months initially (likely extension)
We’re looking for a Java Engineer, that has previous experience working with Azure, specifically Azure app services for a range of exciting projects. If you don’t hold strong experience in this cloud, it will not be right for you.
Rate: £550-£700 (Inside IR35)
Length: 6-month initial contract, strong likelihood of extension
Location: Scotland (fully on site)
Key Skills & Experience:
- Strong core Java development background
- Experience with Spring Boot
- Exposure to Azure App Services
- Proficiency with CI/CD pipelines (Jenkins preferred)
- Terraform experience desirable
- Must have valid Right to Work in the UK (no sponsorship available)
You’ll be joining a well established organisation, working on a range of internal systems and services.
If this sounds like you, apply now for more details!
Java Engineer | Glasgow based | Must have Azure experience! | £550-£700 (Inside IR35) | 6 months initially (likely extension)
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Software Engineer (Java)SC Clearance RequiredCertain Advantage are hiring for a Software Engineer based in Portsmouth.This role is on an initial 12-month contract and is required to be onsite 3 days a week. Your responsibilities:
- Contribute across the full software development lifecycle, including design, development, testing, and deployment.
- Design software solutions using UML/SysML and contribute to technical architecture within a microservices environment.
- Develop high-quality Java applications using Spring Boot, Spring Framework and related technologies.
- Implement and maintain RESTful web services over HTTPS within distributed systems.
- Write and maintain automated tests, ensuring quality and reliability are built into the solution from the outset.
- Participate in Agile ceremonies including sprint planning, estimation, reviews and retrospectives.
- Collaborate closely with team members and wider stakeholders to design, implement and test new product features.
- Contribute to CI/CD pipelines, source control (Git) and issue tracking tools such as Jira.
- Ensure compliance awareness and act with integrity, supporting standards, reputation and sustainable growth.
The individual:
- Java Core (version 8+)
- Spring Boot, Spring Framework - Good knowledge of Developing in Spring with Hibernate
- Good Knowledge of developing REST within HTTPS
- Experience of developing within a microservice architecture
- Distributed systems
- Knowledge and use of software design patterns
- Agile Development Processes
- CI/CD delivery techniques
- Source code management (we use GIT)
- Use of Issue tracking systems (such as Jira)
- UML/SysML using Enterprise Architect or similar
- Ability to self-motivate and to work well within a team environment.
- Ability to promote innovation in self and others
- Ability to interact with internal & external stakeholders in a confident and professional manner
Does this sound like your next career move? Apply today.Working with Certain AdvantageWe go the extra mile to find the best people for the job. If you’re hunting for a role where you can make an impact and grow your career, we’ll work with you to find it.We work with businesses across the UK to find the best people in Finance, Marketing, IT and Engineering. If this job isn’t for you, head to certainadvantage.co.uk and register for job alerts and career guidance tips.
On behalf of our client, we are seeking to recruit a Java Software Developer on an initial 12-month contract. As the Java Software Developer, you shall contribute to all stages of the software development lifecycle and thus have solid experience in design (particularly using UML), development (particularly using Java technologies) and test. The developer should have experience of working with microservices. Automated testing is a critical part of the project so any experience of this would be highly beneficial
Role: Java Software Developer
Pay: 55 per hour Via Umbrella
Location: Portsmouth
Contract: Monday - Friday 37 hours per week, 12 months contract
IR35 Status: Inside
Security Clearance: Security Clearance required on submission
Responsibilities
- Development of code within an agile environment (scrum).
- Working with the team to design, implement and test features for a new product development.
- Task estimation in accordance with sprint planning.
Essential Skills:
- Java Core (version 8+)
- Spring Boot, Spring Framework - Good knowledge of Developing in Spring with Hibernate
- Good Knowledge of developing REST within HTTPS
- Experience of developing within a microservice architecture
- Web Services using RESTful APIs
- Distributed systems
- Knowledge and use of software design patterns
- Agile Development Processes
- CI/CD delivery techniques
- Source code management (we use GIT)
- Use of Issue tracking systems (such as Jira)
- UML/SysML using Enterprise Architect or similar
- Ability to self-motivate and to work well within a team environment.
- Ability to promote innovation in self and others
- Ability to interact with internal & external stakeholders in a confident and professional manner
If you are interested in applying for this position and you meet the requirements, please send your updated CV to: Natalie Dalkin at Line Up Aviation
Line Up Aviation has carved its own place in the recruitment of Aviation and Aerospace personnel all over the world for more than 30 years. We work with some of the industry’s best known companies who demand the highest standard of applicants.
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Java Software Engineer (Developer / Senior / Principal) Complex Systems | Modern Stack | Agile & XP Culture Remote First (office visit approx. once per month - South Manchester) £50,000 - £85,000 + Bonus + Excellent Benefits (level dependent) We’re partnering with a long-established technology business building modern platforms at the heart of a complex, highly regulated domain. With continued growth across their product suite, they’re now hiring Java Software Engineers across multiple levels - Developer, Senior, and Principal - to join their Scrum teams and help deliver software that genuinely makes a difference. The Opportunity This isn’t a traditional enterprise development role. You’ll be working on large-scale, business-critical systems in an environment that genuinely values engineering craft, collaboration, and continuous improvement. Agile and XP practices are embedded across the organisation, with a strong focus on TDD, pairing, continuous integration, and shared ownership. Engineers are encouraged to contribute ideas, challenge the status quo, and help shape both technical direction and team ways of working. You’ll be part of a cross-functional Scrum team, working closely with Product Managers, UX Designers, Test Analysts and fellow Engineers to deliver reliable, scalable software that evolves with customer needs. Role Scope by Level Java Developer (£50,000 - £60,000) Solid Java experience and a desire to grow within complex systems Comfortable contributing to production code within Agile teams Keen to develop skills in testing, modern tooling, and cloud technologies Senior Java Engineer (£60,000 - £70,000) Strong experience delivering features end-to-end Advocate for clean code, TDD and XP practices Enjoys mentoring, pairing and raising engineering standards within the team Principal Java Engineer (£70,000 - £85,000) A hands-on senior engineer who combines technical leadership with coaching Still actively coding as part of a Scrum team Supporting and developing other engineers through mentoring and 1-to-1s Contributing to technical decision-making and continuous improvement Helping shape good engineering practices rather than owning enterprise-wide architecture(Level is based on experience and impact, not job title alone.) Tech Stack & Environment The core platform is Java-based, supported by a modern and evolving stack: Java (JDK 17), Spring Boot React, TypeScript AWS, including serverless approaches Terraform, Docker, Kubernetes, Chef, Vagrant, Packer CI/CD pipelines and DevOps tooling You won’t be expected to be an expert in everything - curiosity, good fundamentals, and a willingness to learn matter far more. There’s a strong internal engineering culture with communities of practice, regular knowledge sharing, and dedicated innovation days focused on learning and experimentation. You’ll Enjoy This Role If You… Enjoy working on complex, long-lived systems Care about code quality, testing and sustainable delivery Thrive in collaborative, Agile environments Like mentoring others and sharing knowledge Want meaningful work with real-world impact Bonus points for experience with: Cloud-native or serverless architectures DevOps and Infrastructure as Code Building scalable, secure platforms What’s in It for You? Remote-first working with minimal office travel Clear salary bands and progression across levels Bonus and excellent benefits package Strong investment in learning and career development Inclusive, sociable culture with regular team and company events Interested? Apply now or get in touch for a confidential chat. Even if you’re unsure which level you’d sit at, we’re happy to talk it through. Cathcart Technology is acting as an Employment Agency in relation to this vacancy
Ready to work somewhere that cares more about how you build software than how fast you can ship it?
At Opencast, we don’t measure developers by the number of tickets you complete. We care about engineering craft, clean design and thoughtful problem-solving.
Opencast consultants deliver in complex environments, pairing often and working with others who take pride in doing things properly: TDD, emerging design, refactoring and leaving code better than they found it. We build software we are proud of, and our clients trust us not just to code but to think, challenge and guide. If you value simple and robust solutions and want a role where your judgment matters as much as your keyboard, you will fit right in.
The role
We’re looking for Contractors in Software Development (consultant level) to help our major clients transform.
Software developers at Opencast care about building products right and combine their own experience and approach with our company values. They are tech agnostic, have expertise in agile methodologies, extreme programming practices and use industry-leading programming languages to deliver agile transformation.
Our approach to software development is collaborative, focused on keeping things simple, and we use test driven development and pair programming as best practice.
Working with clients and key stakeholders is a crucial part of a consultancy role. Our developers are inclusive team players that listen, collaborate, can positively challenge and manage expectations when needed but most of all are always willing to teach and help others. Leaving a client with improved ways of working, working technology and a good experience from discovery through to live is the priority.
Contractors at Opencast follow the same principles as permanent consultants. The roles are varied, technical, and never confined to any one provider or solution.
Requirements
Due to the nature of this role, applicants must either currently hold active Security Check (SC) Clearance or be eligible to obtain it.
Eligibility typically requires UK citizenship and continuous residence in the UK for the past five years, with no single absence exceeding 28 consecutive days.
As attendance at client sites is a routine part of the role’s working pattern and involves occasional travel, travel expenses are not covered.
Experience in delivering digital services for the UK government is highly valuable for many of our projects. Therefore, familiarity with the GDS toolkit will be beneficial.
Technical Skills
- Expertise in Java and/or Scala is required
- Experience with Javascript, Typescript, Kotlin, Python or Ruby is also valuable
- Understanding of Object Oriented Programming
- In depth knowledge of concepts and uses of testing
- Knowledge or experience of delivering complex services to Government Digital Service (GDS) standards
- Being comfortable with new technology, t-shaped and comfortable with ongoing learning and development is key to success
- Experience with agile methodology
A contractor in software development at Opencast is responsible for:
- Delivering in the upkeep of their team’s backlog
- Collaborating with the teams testing effort
- Leading on the implementation of user stories
- Embracing mobbing and pairing
- Working with others in a collaborative, multi-disciplinary environment
Salary
Up to £450 per day (working inside IR35)
Where you’ll work
This role requires regular on-site attendance across our HQ, hub offices, client sites and home. Applicants must be able to commute to offices and client sites as part of their normal working arrangements, as travel is essential to fulfilling the responsibilities of the role.
We include you
We welcome candidates from all identities, attributes, ways of thinking and backgrounds to thrive in a career at Opencast. Our aim is for the diversity of our people to be reflected in the solutions we deliver, to help create a fairer society for all.
Interview
Interviews will be conducted via Microsoft Teams. We’re happy to make adjustments to support your needs.
Want to know more?
Visit our website for more details.
Ready to work somewhere that cares more about how you build software than how fast you can ship it?
At Opencast, we don’t measure developers by the number of tickets you complete. We care about engineering craft, clean design and thoughtful problem-solving.
Opencast consultants deliver in complex environments, pairing often and working with others who take pride in doing things properly: TDD, emerging design, refactoring and leaving code better than they found it. We build software we are proud of, and our clients trust us not just to code but to think, challenge and guide. If you value simple and robust solutions and want a role where your judgment matters as much as your keyboard, you will fit right in.
The role
We’re looking for Contractors in Software Development (Senior level or Technical Lead) to help our major clients transform.
Software developers at Opencast care about building products right and combine their own experience and approach with our company values. They are tech agnostic, have expertise in agile methodologies, extreme programming practices and use industry-leading programming languages to deliver agile transformation.
Our approach to software development is collaborative, focused on keeping things simple, and we use test driven development and pair programming as best practice.
Working with clients and key stakeholders is a crucial part of a consultancy role. Our developers are inclusive team players that listen, collaborate, can positively challenge and manage expectations when needed but most of all are always willing to teach and help others. Leaving a client with improved ways of working, working technology and a good experience from discovery through to live is the priority.
Contractors at Opencast follow the same principles as permanent consultants. The roles are varied, technical, and never confined to any one provider or solution.
Requirements
Due to the nature of this role, applicants must either currently hold active Security Check (SC) Clearance or be eligible to obtain it.
Eligibility typically requires UK citizenship and continuous residence in the UK for the past five years, with no single absence exceeding 28 consecutive days.
As attendance at client sites is a routine part of the role’s working pattern and involves occasional travel, travel expenses are not covered.
Experience in delivering digital services for the UK government is highly valuable for many of our projects. Therefore, familiarity with the GDS toolkit will be beneficial.
Technical Skills
- Expertise in Java and/or Scala is required
- Experience in other languages such as Javascript, Typescript, Kotlin, Python or Ruby is also valuable
- Experience in a technical leadership role
- Deep understanding of programming paradigm, code design, testing, accessibility, performance and security
- Proven ability to apply different testing tools and methods in practice
- Knowledge or experience of delivering complex services to Government Digital Service (GDS) standards
- Being comfortable with new technology, t-shaped and comfortable with ongoing learning and development is key to success
- Experience with agile methodology
A senior level contractor in software development at Opencast is responsible for:
- Driving the elaboration of their team’s backlog
- Setting testing strategies to match industry standards
- Being a technical expert in their team (or acting as the team lead)
- Leading the technical representation in a project discovery
- Acting as a technical lead in the team, enabling them to achieve their full potential
Salary
£450 - £600 per day (working inside IR35)
Where you’ll work
This role requires regular on-site attendance across our HQ, hub offices, client sites and home. Applicants must be able to commute to offices and client sites as part of their normal working arrangements, as travel is essential to fulfilling the responsibilities of the role.
We include you
We welcome candidates from all identities, attributes, ways of thinking and backgrounds to thrive in a career at Opencast. Our aim is for the diversity of our people to be reflected in the solutions we deliver, to help create a fairer society for all.
Interview
Interviews will be conducted via Microsoft Teams. We’re happy to make adjustments to support your needs.
Want to know more?
Visit our website for more details.
Java Developer
Birmingham (Hybrid)
6 Month Contract
£(Apply online only)/day (Outside IR35)
Java Developer needed with both active SC Clearance and NPPV3 Security Clearance. 6 Month Contract based in Birmingham (Hybrid).
Paying up to £(Apply online only)/day (Outside IR35). Start ASAP in Feb/March 2026.
Hybrid Working - 3 days/week remote (WFH), and 2 days/week working on-site in the Birmingham office. Occasional travel to the Croydon office, typically once every 1-2 months.
A chance to work with a leading global IT transformation business specialising in delivering large-scale Government / Public Sector projects.
Key experience + tasks will include:
- Java Developer needed to work on developing solutions for a large-scale Government / Public Sector programme.
- Government / Public Sector / (url removed) sector experience strongly preferred.
- Strong hands-on Java development expertise including: Java 17+, Spring Boot, Spring Data JPA, Spring Integration, Spring Batch, Microservices, REST, SOAP Web Services, JPA (Hibernate).
- Experience of developing Java solutions for large-scale integration projects including: microservices, web services, messaging + distributed systems.
- Connecting processes across multiple systems using message brokers like ActiveMQ.
- Robust experience of Web Services, SOAP, RESTful), Containerization (Docker), and testing frameworks (Mockito, JUnit, Powermock, DBUnit, JMock, TestContainers).
- Supporting live systems + diagnose / resolving incidents.
- Continuous Integration methodologies such as: Maven, Jenkins, SonarQube, Git + Stash Repository.
- AWS Cloud Services (EC2, SQS, RDS, DynamoDB, S3, Route53, Cloudwatch, KMS).
- Any experience of Linux, Atlassian products, open-source DBs, PostgreSQL, or Grafana monitoring would be helpful.
- Technical Environment: Quartz, SQL PostgreSQL databases, Aurora, Messaging Services (ActiveMQ), Maven, Jenkins, Junit, AWS Cloud hosting, Bootstrap, Docker, TDD + Agile/Scrum methods.
- Advantageous Skills: Angular, Node JS, Jaspersoft, Spring Cloud, Spring Batch, Spring Integration, SQL queries, Postgres/Aurora DB config, Activiti BPMN, Postfix, AWS/Azure Devops, CI/CD tools.
Prestigious opportunity for a Senior Applications Engineer with a Global Investment Management company expanding its new offices in Manchester.We are seeking a Senior Application Engineer (Backend cloud-based application development), with deep technical expertise and thought leadership. You will drive strategy for your area of expertise across teams and foster a developer community within your domain. The role involves mentoring junior staff, ensuring high-quality deliverables, promoting best practices like TDD and BDD, and leading engineering practices across the SDLC.
As a Senior Applications Engineer you will be responsible for:-
- Providing technical expertise in Backend Development, supporting the team with effective solutions and practical insights
- Participating in all phases of the Software Development Life Cycle (SDLC), including requirements gathering, development, deployment, and ongoing maintenance
- Contributing new ideas, tools, and methodologies to help foster a culture of continuous improvement and innovation within the team
- Sharing knowledge and mentoring peers and junior engineers, supporting their growth and skills development
- Collaborating with technical leads, IT teams, and business stakeholders to understand project requirements, implications, and dependencies
- Reviewing and providing feedback on technical documentation, suggesting improvements where appropriate
- Promoting the best development approaches such as Test-Driven Development (TDD) and Behaviour-Driven Development (BDD) to deliver high-quality, maintainable code
If you possess a combination of some of the following skills, then LETS TALK!
- Experience in Java development
- Backend cloud-based application development
- Understanding of API design for mobile applications with event-driven architecture
- Strong analysis and problem-solving skills
- Preferred - Experience of building distributed scalable microservices using Java/Kotlin, Spring Boot, OAuth 2.0, Secure API design
- A working understanding of technologies/areas: AWS, API Design, Automation testing
In return, you will be rewarded with a highly competitive benefits package including a bonus and ongoing career development and training.
What you need to do now
If you’re interested in this role, click ‘apply now’ to forward an up-to-date copy of your CV, or call us now.
If this job isn’t quite right for you, but you are looking for a new position, please contact us for a confidential discussion about your career.
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