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Overview
Discover top contract Backend Engineer jobs on Haystack, the leading IT job board connecting skilled developers with exciting short-term opportunities. Whether you specialize in Java, Python, Node.js, or other backend technologies, find flexible contract roles that match your expertise and advance your career today. Start your search for the best Backend Engineer contract jobs now!
C++ Software Engineer
Certain Advantage
Bristol
Hybrid
Mid - Senior
£65/hour
RECENTLY POSTED

World Class Defence Organisation based in Bristol is currently looking to recruit a C++ Software Engineer subcontractor on an initial 6 month contract, with very likely extension.  The role will be onsite 4 days per week.  A 4 day working week is OK (Monday to Thursday). Rate: £65.00 per hour Overtime Rate: Hours worked over the standard 37 hours per week, will be paid at ‘time and a quarter’ Location: Bristol Hybrid / Remote working: The role will be onsite 4 days per week. A 4 day working week is OK (Monday to Thursday). Duration: 6 Months with very likely extension. Contracts are often ongoing and long-term thereafter. IR35 status: Inside IR35 (Umbrella) Interview process: One stage video interview Job Description: The company are a world leader in missile and missile systems looking for a highly capable and adaptable to join our Development Facility in Bristol. Join the growing dynamic Software team in Bristol in developing the latest mission-critical defence systems. You will work as part of a small team and be empowered to work individually with little supervision. Responsibilities: A strong background in software engineering, its realisation and system wide impact. Experience of working in C++ Collaborative, open approach to development and have the ability to work well in a team and maintain momentum during development. Experience of working across the entire software development process from engaging with requirement authorities to automated target integration and proving, supported with effective documentation Experience of new tools, techniques and approaches that might enable us to evolve our processes to improve our efficiency and sustainability Experience in other languages such as Ada, QT Knowledge of DDS middleware and Real Time Operating Systems Knowledge of standards such as DefStan 00-55, DO-178C or IEC61508 and restricted coding standards such as MISRA C

Perl Software Developer
Certain Advantage
Stevenage
Hybrid
Junior - Mid
Private salary
RECENTLY POSTED

Perl Developer Certain Advantage are hiring for a Perl Developer based in Stevenage. (Once a month onsite in Stevenage) This role is on an initial 6-month contract basis. The company: We’re working with a leading defence and aerospace organization that designs, develops, and delivers advanced missile systems and related technologies. It supports national and allied armed forces with cutting-edge, integrated solutions across air, land, and sea domains. The role: Code technical publication stylesheets using PERL language Develop database solutions to store and retrieve company information Install and configure information systems to ensure functionality Analysing, planning, and defining data architecture framework, including security, reference data, metadata, and master data Migrate data from legacy systems to new solutions Improve system performance by conducting tests, troubleshooting and integrating new elements Optimize new and current database systems Define security and backup procedures Collaborating with other teams within the organisation to devise and implement data strategies, build models, and assess shareholder needs and goals Provide operational support for Management Information Systems The individual: Proficiency in PERL is essential Proficiency in SQL and C# Experience with data visualization is highly desirable. Proficiency in MS Excel Experience in data modelling, metadata management, data synthesis Experience gathering and analysing system requirements Proven analytical skills Problem-solving attitude Does this sound like your next career move? Apply today. Working with Certain Advantage We 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 (url removed) and register for job alerts and career guidance tips

Java Tech Lead
Velocity Talent Ltd
Burgess Hill
Hybrid
Senior
£300/day
RECENTLY POSTED

Java Tech Lead / Architect with 10+ years experience is needed for an initial 6-month contract with further extensions up to 18 months paying £300 a day inside IR35 to drive the design and execution of high-scale, event-driven systems. This role is a hybrid of strategic architectural planning and hands-on engineering leadership. You will be responsible for defining technical roadmaps, mentoring a high-performing engineering team, and ensuring the delivery of robust microservices within a complex, long-term program.

Key Responsibilities

  • Architectural Leadership: Design and oversee the implementation of scalable microservices and event-based architectures using Java, Spring Boot, and Kafka.
  • Team Steering: Act as the technical point of contact for the team; facilitate decision-making, sprint planning, and resource allocation.
  • Quality Governance: Conduct rigorous code reviews, approve pull requests, and establish best practices for CI/CD and automated testing.
  • Hands-on Delivery: Lead by example by contributing to mission-critical code and solving complex technical bottlenecks that require “Architect-level” troubleshooting.
  • Stakeholder Management: Translate business requirements into technical blueprints and communicate progress/risks to program leadership.

Technical Requirements

10+ years of professional software development experience

Expert-level proficiency in Java (current versions) and Spring Boot.

Deep expertise in Kafka for event-driven architecture and streaming.

Proven track record in Microservices design patterns, API Gateway management, and Cloud-native development.

Previous experience leading engineering teams through the full SDLC in an Agile environment.

Preferred Attributes

Experience with Cloud platforms (AWS/Azure/GCP) and containerization (Docker/Kubernetes).

Strong understanding of Database design (SQL and NoSQL).

Excellent communication skills, capable of bridging the gap between technical teams and non-technical stakeholders.

Working Conditions

Hybrid Model: Candidates must be able to commute to West Sussex 3 days per week.

Stability: While the initial contract is 6 months, this is a multi-year program offering significant long-term potential.

Software Engineer
JAM Recruitment Ltd
Multiple locations
In office
Mid - Senior
£500/day - £570/day
RECENTLY POSTED

DV Cleared Software Engineer (DBA / Data-Focused)

Contract: 12 months

Location: Cheltenham (5 days per week onsite, occasional travel to Gloucester)

Rate: £500 - £570 per day (Umbrella, Inside IR35)

Must hold live UKIC DV clearance

About the Role

An exciting opportunity has arisen for an experienced Software Engineer with a strong DBA background to support a growing national security programme based in Cheltenham. This role sits within a high-performing technical team delivering solutions that have real-world impact across the UK Government sector.

You’ll work on data-focused systems, contributing across the full software lifecycle while supporting and improving secure Oracle-based platforms and automation using Ansible.

Key Responsibilities

Design, develop, test, document and support software components within a secure system environment

Provide accurate estimates for development effort from given specifications

Work with a strong focus on data processing and database-driven systems

Support and develop Oracle and Ansible-based infrastructure, including automation

Analyse code defects and deliver timely, robust fixes

Required Skills & Experience

Strong background as a DBA / data-focused software engineer

Hands-on experience with Oracle and Ansible

Solid understanding of backend systems and data processing

Proven ability to troubleshoot, analyse and resolve complex technical issues

Comfortable working collaboratively within Agile teams

Desirable

Exposure to cloud or platform technologies such as AWS, Docker, microservices

Experience working in secure or regulated environments

The Ideal Candidate

You’ll be technically strong, curious, and motivated to solve complex problems. This role would suit someone who enjoys working close to the data layer, values clean, well-documented solutions, and wants to contribute to meaningful, high-impact programmes.

TPBN1_UKTJ

Software Engineer
JAM Recruitment Ltd
Multiple locations
In office
Mid - Senior
£500/day - £570/day
RECENTLY POSTED

DV Cleared Software Engineer (DBA / Data-Focused)

Contract: 12 months

Location: Cheltenham (5 days per week onsite, occasional travel to Gloucester)

Rate: 500 - 570 per day (Umbrella, Inside IR35)

Must hold live UKIC DV clearance

About the Role

An exciting opportunity has arisen for an experienced Software Engineer with a strong DBA background to support a growing national security programme based in Cheltenham. This role sits within a high-performing technical team delivering solutions that have real-world impact across the UK Government sector.

You’ll work on data-focused systems, contributing across the full software lifecycle while supporting and improving secure Oracle-based platforms and automation using Ansible.

Key Responsibilities

  • Design, develop, test, document and support software components within a secure system environment
  • Provide accurate estimates for development effort from given specifications
  • Work with a strong focus on data processing and database-driven systems
  • Support and develop Oracle and Ansible-based infrastructure, including automation
  • Analyse code defects and deliver timely, robust fixes

Required Skills & Experience

  • Strong background as a DBA / data-focused software engineer
  • Hands-on experience with Oracle and Ansible
  • Solid understanding of backend systems and data processing
  • Proven ability to troubleshoot, analyse and resolve complex technical issues
  • Comfortable working collaboratively within Agile teams

Desirable

  • Exposure to cloud or platform technologies such as AWS, Docker, microservices
  • Experience working in secure or regulated environments

The Ideal Candidate

You’ll be technically strong, curious, and motivated to solve complex problems. This role would suit someone who enjoys working close to the data layer, values clean, well-documented solutions, and wants to contribute to meaningful, high-impact programmes.

Salesforce DevOps Engineer
Anson McCade
London
Hybrid
Mid - Senior
£575/day
RECENTLY POSTED

A leading digital delivery organisation is seeking an experienced Salesforce DevOps Engineer to support a major public services programme. This role focuses on designing, building, and maintaining an end-to-end Salesforce CI/CD ecosystem that enables reliable, scalable, and secure releases across multiple environments. You will play a key role in shaping automated build, test, deployment, and environment management pipelines while working closely with development and delivery teams.

Whats on Offer

  • 6-month contract (Inside IR35)
  • £575 per day
  • Hybrid working London based
  • Opportunity to work on high-profile public sector transformation programmes
  • Modern engineering environment with strong emphasis on automation and best practice

What You Need

  • Proven experience as a Salesforce DevOps Engineer or in a similar platform-focused DevOps role
  • Strong Salesforce platform knowledge, including application implementation and configuration
  • Hands-on experience designing and maintaining Salesforce CI/CD pipelines
  • Experience with GitLab CI/CD
  • Strong knowledge of AWS and infrastructure-as-code using Terraform
  • Experience implementing scratch-orgbased validation workflows
  • Experience with semantic-releasedriven packaging approaches
  • Automated environment configuration experience
  • Integration of automated regression testing (e.g. Provar)
  • Experience developing custom Salesforce CLI plugins
  • Exposure to UI automation using tools such as Puppeteer
  • Strong problem-solving and troubleshooting skills
  • Comfortable working within Agile delivery teams
  • Must hold active SC clearance or be eligible and willing to obtain it
  • British passport holder required

If you are a Salesforce DevOps specialist looking for your next contract opportunity in a secure and impactful environment, please apply for immediate consideration.

Machine Leaning Developer?with AI &Python
Randstad Digital
Sheffield
Hybrid
Mid - Senior
£350/day - £400/day

Machine Learning Developer (Document AI & NLP)

Duration:6-month contract (FTC/Subcon) role

Hybrid 3 days onsite

Location:Sheffield

The Role

You will design and build Python-based ML and OCR components, taking ownership of the full lifecycle-from initial requirement gathering with stakeholders to deployment and production support.

Core Responsibilities

  • Model Development: Build and iterate on models for content extraction and classification.
  • End-to-End Delivery: Support the full software development lifecycle (SDLC), including testing, deployment, and API resilience.
  • Collaboration: Work closely with Product Managers and technical teams to translate business needs into scalable AI solutions.
  • Innovation: Continuously test and improve existing features using traditional ML and Generative AI.

Technical Requirements

Mandatory Skills:

  • Azure Machine Learning: Proven experience within the Azure ecosystem.
  • Document AI: Strong background in Intelligent Document Processing (IDP) using both traditional and Generative AI (specifically open-source models).
  • Python Expert: Deep proficiency in Python for production-level Machine Learning and NLP.

Frameworks & Tools:

  • ML/DL: TensorFlow, PyTorch, or Hugging Face.
  • Processing: OpenCV, Spacy, Regex, and OCR technologies.
  • DevOps/Security: Experience delivering secure, resilient code and managing APIs.

Nice to Have:

  • Knowledge of PostgreSQL for data management.
  • Experience with Azure Kubernetes Service (AKS), Azure CLI, and Azure DevOps.
  • Experience in high-cadence production environments.

Randstad Technologies is acting as an Employment Business in relation to this vacancy.

PySpark Developer
Randstad Digital
London
Fully remote
Senior - Leader
£300/day - £350/day

Lead PySpark Engineer (Cloud Migration)

Role Type: 5-Month Contract

Location: Remote (UK-Based)

Experience Level: Lead / Senior (5+ years PySpark)

Role Overview

We are seeking a Lead PySpark Engineer to drive a large-scale data modernisation project, transitioning legacy data workflows into a high-performance AWS cloud environment. This is a hands-on technical role focused on converting legacy SAS code into production-ready PySpark pipelines within a complex financial services landscape.

Key Responsibilities

  • Code Conversion: Lead the end-to-end migration of SAS code (Base SAS, Macros, DI Studio) to PySpark using automated tools (SAS2PY) and manual refactoring.
  • Pipeline Engineering: Design, build, and troubleshoot complex ETL/ELT workflows and data marts on AWS.
  • Performance Tuning: Optimise Spark workloads for execution efficiency, partitioning, and cost-effectiveness.
  • Quality Assurance: Implement clean coding principles, modular design, and robust unit/comparative testing to ensure data accuracy throughout the migration.
  • Engineering Excellence: Maintain Git-based workflows, CI/CD integration, and comprehensive technical documentation.

Technical Requirements

  • PySpark (P3): 5+ years of hands-on experience writing scalable, production-grade PySpark/Spark SQL.
  • AWS Data Stack (P3): Strong proficiency in EMR, Glue, S3, Athena, and Glue Workflows.
  • SAS Knowledge (P1): Solid foundation in SAS to enable the understanding and debugging of legacy logic for conversion.
  • Data Modeling: Expertise in ETL/ELT, dimensions, facts, SCDs, and data mart architecture.
  • Engineering Quality: Experience with parameterisation, exception handling, and modular Python design.

Additional Details

  • Industry: Financial Services experience is highly desirable.
  • Working Pattern: Fully remote with internal team collaboration days.
  • Benefits: 33 days holiday entitlement (pro-rata).

Randstad Technologies is acting as an Employment Business in relation to this vacancy.

Salesforce Developer
Anson McCade
London
Hybrid
Mid - Senior
£660/day
+1

An established digital consultancy is seeking an experienced Salesforce Developer to support the delivery of enterprise-scale Salesforce solutions for public sector clients. Youll join a highly skilled Salesforce delivery team working on complex, mission-critical programmes, building and extending Salesforce capabilities using modern development tools and best practices. The role offers a blend of hands-on development, solution design, and collaboration with technical and business stakeholders.

Whats on Offer

  • 6-month contract (Inside IR35) with potential extension
  • £660 per day
  • Hybrid working London based
  • Opportunity to work on high-impact public sector programmes
  • Collaborative, Agile delivery environment
  • Exposure to cutting-edge Salesforce Industry Cloud / Public Sector Solutions implementations

What You Need

  • Strong Salesforce development background with 5+ years experience preferred

  • Proven experience with Salesforce Industries / Public Sector Solutions and OmniStudio (essential)

  • Hands-on expertise with:

    • OmniScripts
    • FlexCards
    • Data Mappers (formerly Data Raptors)
    • Omni Processes (formerly Integration Procedures)
    • Salesforce Flows (screen, triggered, API flows)
  • Custom development skills in Apex and Lightning Web Components (LWC)

  • Experience with JavaScript and Lightning Components

  • Understanding of Salesforce security and sharing model

  • Familiarity with CI/CD pipelines and Git-based version control

  • Experience using Jira, Confluence, or similar tooling

  • Integration experience desirable (e.g. MuleSoft, Apigee, Connected Apps)

  • Strong analytical and problem-solving skills

  • Comfortable working in Agile teams and collaborating across disciplines

  • Automated testing experience (e.g. Provar, Selenium) desirable

  • Ability to work with large, complex systems and enhance existing implementations

  • Eligible for Security Clearance (SC) or willing to undergo clearance

If youre a Salesforce Developer with strong OmniStudio and Public Sector Solutions experience and are looking for your next contract opportunity, apply now for immediate consideration.

Microsoft 365 Application Developer
Artis Recruitment
Gloucester
Hybrid
Mid - Senior
£400/day - £500/day

SharePoint / Microsoft 365 Application Developer required by our market leading client in Bristol. This will be a 3 month initial contract, likely to extend and will sit Outside IR35.

We are looking for an experienced SharePoint / Microsoft 365 Application Developer to support ongoing digital transformation projects. This is a hands-on role requiring strong technical expertise, problem-solving skills, and the ability to deliver independently in a fast-paced environment.

Key Responsibilities:

  • Design, develop, and maintain SharePoint Online sites, libraries, lists, and workflows.
  • Build custom solutions using Power Apps, Power Automate, and PowerShell.
  • Develop modern SharePoint components using SPFx (SharePoint Framework).
  • Integrate Microsoft 365 services including Teams, OneDrive, Azure AD, and Exchange Online.
  • Migrate content from legacy SharePoint or file systems into SharePoint Online.
  • Create reusable templates, components, and governance-aligned solutions.
  • Troubleshoot and resolve issues across SharePoint and Microsoft 365 applications.
  • Ensure solutions follow security, compliance, and best practice guidelines.

Essential Skills & Experience:

  • Strong experience with SharePoint Online development and configuration.
  • Expertise in SPFx, TypeScript, React, and modern SharePoint development.
  • Deep understanding of Power Platform (Power Apps, Power Automate).
  • Experience with Microsoft Graph API and REST APIs.
  • Strong knowledge of Azure AD, permissions, and identity management.
  • Understanding of Microsoft 365 governance, security, and compliance.

Desirable Skills:

  • Experience with SharePoint migrations (ShareGate, AvePoint, etc.).
  • Knowledge of Azure Functions, Logic Apps, or other Azure services.
  • Teams app development and AI experience.
  • Familiarity with DevOps pipelines for SPFx deployments.
  • Understanding of information architecture and UX best practices.

Ideal Candidate:

  • Someone who can take ownership of requirements and deliver end-to-end solutions.
  • Comfortable working in a hybrid or remote environment.
  • Able to advise on best practices and suggest improvements to existing processes.
SAP RPA Developer - Nottingham, UK
Infoplus Technologies UK Ltd
Nottingham
In office
Mid - Senior
Private salary

Role: SAP RPA DeveloperLocation: Nottingham, UKDuration: 6+ Months
Roles and responsibilities:1.Design, develop, and implement RPA solutions using SAP technologies.2.Collaborate with business analysts and stakeholders to identify automation opportunities.3.Maintain and support existing RPA solutions, ensuring optimal performance and reliability.4.Conduct testing and debugging of RPA applications to ensure quality and efficiency.5.Document processes, workflows, and technical specifications for RPA solutions.6.Stay updated with the latest RPA trends and technologies, particularly within the SAP ecosystem.
Supervisory / Managerial responsibilities1.Responsible to design and develop SAP RPA Solution and provide guidance to the team2.Regular review of design, build delivery and ensure the solution built is inline with the overall architecture
Core skills:1.Minimum 3+ years of experience in SAP RPA and SAP BTP development or related roles.2.Proficiency in SAP technologies and tools, including SAP Intelligent RPA.3.Strong programming skills in languages such as ABAP, Javascript, UI54.Experience with process mapping and analysis techniques5.Knowledge of SAP BTP Development and Design Concepts (e.g., SAP S/4HANA, SAP Fiori).6.Familiarity with automation frameworks and tools.7.Strong analytical and problem-solving skills.8.Knowledge of SAP AI Capabilities on BTP is desirable

Principal Software Engineer
Sirius Analysis Limited
Portsmouth
Hybrid
Senior
£7/day

Salary: Negotiable plus benefits, pension (7% contribution), 25 days holiday & life insurance We are looking for principal software engineers with diverse experience. We are a small but rapidly growing consultancy, owned highly experienced and recognised practitioners in UK defence consultancy. We are looking for candidates with a mix of technical expertise and interpersonal skills, able to work independently and in small teams. The Role: As a Principal Software Engineer, you will play a major role in leading and developing software engineering in the Software Modelling and Simulation, autonomy and geospatial fields, along with providing key advice around innovation and new techniques to stakeholders.You will be designing solutions for complex challenges that will meet and exceed user requirements. Responsibilities will include: Take responsibility for the leadership and delivery of whole, or significant sub-components, of technical consulting projects and products. Designing, developing and delivering software solutions using a large range of techniques, including Wargames, Modelling and Simulation, Robotic and Autonomous systems, Digital Twins and Synthetic Environments. Applying mathematical and computational methods to tackle real world problems, applying tools and techniques, and developing novel approaches where required. Building new relationships and maintaining current customer relationships. Expertise Required: Principal Software Engineer : At least 10 years of experience, including designing and delivering software applications and leading teams. About You: We are looking for candidates who can help the company grow and can offer exciting opportunities for those with the drive to develop their own skills and those of the company. We offer competitive salaries and packages, and the opportunity for rapid advancement for the right candidates. The successful candidate must be able to demonstrate the following attributes: Essential At least 10 years experience in designing and implementing performant software applications. Apply mathematical principles or statistical approaches to solve problems in scientific or applied fields. The ideal candidate will be educated to degree level or have equivalent relevant experience. Proficient in C/C++ native development. Demonstratable skills in stakeholder management including influencing, negotiating and conflict management. Demonstratable experience and capability in writing proposals and coordinating bid management activity. Experience in line management and enabling people to perform. Extensive experience with a range of software modelling and simulation techniques. Experience in using cases and project data context to determine specifications and requirements. Experience in one or more of the following technical disciplines: Videogame engine technology (e.g. Unreal Engine, Godot) Agent, Entity and Event based Simulation Robotics and Autonomous Systems Understand varied codebases and be confident in making changes to large projects. Understand performance and hardware constraints. Building customer and stakeholder relationships. Authoring of technical reports Proficient in MS Office, especially Excel, PowerPoint, Word. Presenting to customers. Be willing to travel (on occasion as projects demand) and comfortable to work at client sites for periods. Desirable: Experience working with Defence Digital, DE&S, Dstl, Frontline Commands or UK Defence industry. Other Requirements: Candidates must have an existing right to live and work in the UK. Candidates will need to undergo an internal BPSS check prior to gaining site access. Candidates will also need to either hold a current SC clearance or be willing and eligible to undergo a Security Clearance check (SC level) upon starting their employment with the company. To gain SC clearance you will normally need at least 5 years UK residency. TPBN1\_UKTJ

System Programmer
TOYOTA MATERIAL HANDLING UK
Leicester
In office
Mid
Private salary

We are looking for a System Programmer to support and maintain our Intranet performance to optimal levels. This is a temporary role for 24 months. The role can be based in or around either Warrington, Leicester or Castleford.

About the role
On a day-to-day basis this is what you would be doing:

  • Resolve errors/faults as they arise.
  • Offer programmer support when required.
  • Design, develop, and maintain our business-critical applications, databases, and automated processes
  • Develop, test, deploy, and maintain automation solutions using Power Automate and Blue Prism.

We are looking for somebody with experience in a similar role. Here is a quick tick list for the other skills we are looking for:

  • Excellent communication skills.
  • Knowledge of Linux/Windows server environments.
  • Familiarity with Python, PowerShell, or other scripting languages.
  • Experience with process mapping, workflow design tools, or BPM platforms.
  • Understanding of IT security, data governance, and best practice coding standards.

What we offer

  • Competitive salary
  • Attractive company pension
  • Company sick pay
  • Voluntary critical illness cover
  • Free eye tests
  • Free flu jabs
  • 24/7 Employee Assistance Programme
  • Benefits platform with instant discounts and offers

Why choose Toyota

Toyota Material Handling is the world’s number one manufacturer of materials handling equipment providing quality sales and service support across the UK.
We foster a culture where our team members are encouraged to continually improve their processes and strive to provide the highest quality in service for our customers. We aim to create a safe environment where our team members feel valued, fulfilled, engaged and happy. We want to attract the best talent and develop our team so that they achieve their full potential.
Due to the high volume of applications we receive regrettably only those selected for an interview will be contacted.
As part of our recruitment process, we may use artificial intelligence (AI)-enabled tools to support activities such as application screening. All decisions are subject to human review, and AI is used fairly and in line with our data protection and equality obligations.
Toyota Material Handling UK is an equal opportunities employer.

SAP RPA Developer
Stackstudio Digital Ltd.
Nottingham
Hybrid
Senior - Leader
£600/day - £650/day

Role DetailsJob Title: SAP RPA Developer
Location: Boots UK, D90 Thane Road, Beeston, Nottingham
Special working conditions (travel, on call etc): Mandatory Work from Office 3 days per Week
Additional remarks (if any): Experience of managing a multi-cultural team working across different time zonesJob Purpose and primary objectivesThe position is based in Nottingham, with an opportunity to work with the SAP Technical team of the SAP Centre of Expertise where the latest SAP technologies and ways of working are being leveraged, reporting into the SAP Solutions lead. SAP RPA skills are required, predominantly to work as SAP RPA Developer on S/4 HANA Transformation program and Maintenance and Support.Key responsibilities (please specify if the position is an individual one or part of a team)

  1. Design, develop, and implement RPA solutions using SAP technologies.
  2. Collaborate with business analysts and stakeholders to identify automation opportunities.
  3. Maintain and support existing RPA solutions, ensuring optimal performance and reliability.
  4. Conduct testing and debugging of RPA applications to ensure quality and efficiency.
  5. Document processes, workflows, and technical specifications for RPA solutions.
  6. Stay updated with the latest RPA trends and technologies, particularly within the SAP ecosystem.

Supervisory / Managerial responsibilities (please specify if the position will have persons reporting to it)

  1. Responsible to design and develop SAP RPA Solution and provide guidance to the team
  2. Regular review of design, build delivery and ensure the solution built is inline with the overall architecture

Other responsibilities Budgets, targets, equipment etc (please specify)Not applicableKey Skills/KnowledgeCore skills:

  1. Minimum 3+ years of experience in SAP RPA and SAP BTP development or related roles.
  2. Proficiency in SAP technologies and tools, including SAP Intelligent RPA.
  3. Strong programming skills in languages such as ABAP, Javascript, UI5
  4. Experience with process mapping and analysis techniques
  5. Knowledge of SAP BTP Development and Design Concepts (e.g., SAP S/4HANA, SAP Fiori).
  6. Familiarity with automation frameworks and tools.
  7. Strong analytical and problem-solving skills.
  8. Knowledge of SAP AI Capabilities on BTP is desirable

Experience requiredOverall 10-12 Years with min 3 years in RPAPerson SpecificationClient facing, Regular communication with the client & Team.I.e. Negotiating, client facing, communication, assertive, team leading/team member skills, supportive.

Salesforce Developer - Up to 660 Per Day
Anson McCade
London
In office
Mid - Senior
£660/day

Salesforce Developer - Up to 660 Per DayInside IR356 Month ContractActive SC Clearance

A leading technology organisation is seeking a Salesforce Developer to join their Public Sector-focused delivery team in London. Youll be building and extending Salesforce Industry Cloud solutions, working with Flows, OmniScript, Apex, and LWC, while collaborating with project leads and stakeholders.

Role Overview:

  • Develop and deploy Salesforce Public Sector Solutions, including Flows, OmniScript, FlexCards, and Action Plans
  • Implement custom Apex classes and Lightning Web Components where required
  • Follow best practices, maintain solution quality, and contribute to CI/CD pipelines
  • Collaborate in an Agile team, supporting and mentoring colleagues where needed

What Theyre Looking For:

  • 5+ years Salesforce Industry Cloud development experience
  • Experience with OmniStudio / Public Sector Solutions
  • Skills in Apex, LWC, JavaScript, and integration tools (Mulesoft / APIGEE beneficial)
  • Understanding of Salesforce security model, testing, and CI/CD deployment
  • Strong communication, problem-solving, and time-management skills
  • Active SC clearance or willingness to obtain

Please apply with your latest CV if you meet the requirements and are interested in this opportunity

Senior Salesforce Developer
Anson McCade
UK
Hybrid
Senior
£600/day

An urgent contract opportunity is available for an experienced Salesforce Developer to support the delivery and enhancement of a large-scale public-sector Salesforce platform. This role sits within an established delivery team working on complex, business-critical services using Salesforce Public Sector Solutions.

The successful candidate will be responsible for building, extending, and maintaining Salesforce capabilities, working closely with technical leads, delivery managers, and client stakeholders. This role requires strong hands-on development experience across Salesforce Industries and OmniStudio, with the ability to contribute to high-quality, sustainable solutions in a fast-paced environment.

Whats on offer

  • Contract length: 6 months, with potential extension
  • Rate: Up to £600 per day (Inside IR35)
  • Location: Hybrid, London (occasional on-site attendance desirable but not essential)
  • Start date: ASAP
  • Opportunity to work on a high-impact Salesforce Public Sector Solutions programme
  • Collaborative Agile delivery environment

What you need to be successful

  • Strong commercial experience as a Salesforce Developer
  • Proven hands-on delivery using Salesforce Industries / Public Sector Solutions
  • Mandatory experience with OmniStudio, including:OmniScripts,Omni Processes / Integration Procedures,Data Mappers (formerly DataRaptors)
  • Strong experience building Salesforce Flows (screen, triggered, and API flows)
  • Ability to design and implement custom Apex classes and Lightning Web Components (LWC)
  • Solid understanding of Apex security and sharing models
  • Experience working with Git-based CI/CD pipelines
  • Familiarity with Jira, Confluence, or equivalent delivery tooling
  • Experience integrating Salesforce with other systems (e.g. MuleSoft, Apigee, Connected Apps) is desirable
  • Ability to build, test, and document scalable and sustainable solutions
  • Active SC clearance (or eligibility) is required
  • Salesforce certifications such as Platform Administrator, Platform Developer, App Builder, or Public Sector Solutions accreditation are highly desirable.

O.K. I’m in what’s next?
Apply with your latest CV below

Software Developer
Bowerford Associates Limited
Exeter
Hybrid
Mid - Senior
£42,000/day - £55,000/day
+2

I am searching for a number of experienced C# / .NET Software Developers who can use their development skills and expertise to produce high quality, innovative solutions for a wide range of customers. You will work openly and collaboratively with a diverse range of technical and subject matter experts within the technology department and throughout the whole business. Please note, these roles are offered on a hybrid-working basis. These are NOT remote positions, and you are required in the office two (2 days) per week. Therefore, you MUST live within a commutable distance of Exeter, Devon, or you will be able to relocate to the area in order to be considered for the roles. In this role you will be responsible be: - \* Using Agile methodologies for the design, development and acceptance of software solutions. \* Working collaboratively with the Product Owner to understand the customer requirements and gain an understanding of implementation to inform solution scoping. \* You will perform critical assessments, challenge assumptions and identify most appropriate acceptance criteria that mitigate potential risk. \* You will be responsible for requirements analysis, scoping, specification definition, data analysis and project management as required to meet the needs of the solutions. \* Creating production code and performing code reviews with the team, you will be equally comfortable working alone or in pairs or mob. Please note - experience of pair programming or mob programming is not required to be considered for the role but you MUST be open and prepared to work this way as TDD and pairing accounts for 85% of the day! \* You will comprehend and use established design patterns and best practices, taking responsibility and holding self to account for high quality and maximal efficiency of deliverables. \* You will be eager to learn and research solutions and share findings with others, playing an active, positive collaborative role with colleagues and customers. \* You will be utilising AI implementing software development using AI agentic to enhance productivity and efficiency through intelligent task management, seamless communication, and adaptive learning. Please note, AI is used as a tool but not for coding purposes. \* Integrate sustainable practices into software development processes to minimise environmental impact, enhance resource efficiency, and promote long-term sustainability. To be a success in this role you require in-depth commercial experience in the following key areas: - \* Analysis and Design \* C# \* MVC \* .NET framework \* SOLID Principles \* A desire to work in a Pair Programming / Mob Programming environment. \* TSQL / SQL \* Test Automation \* TDD \* Refactoring \* Unit Testing / Mocking \* JavaScript frameworks such as React (or similar) \* Experience with using ORM (e.g. Entity Framework) \* Agile & Scrum development methodologies \* Able to present self verbally in a presentation or meeting situation. We are looking to speak with candidates who are good communicators, both verbal and written, candidates who can communicate with external stakeholders and internal team members, for example, during agile ceremonies. You will ideally be Educated to University standard with an IT-related degree. Any experience with BDD, DDD, PowerShell, Azure / AWS and using agentic AI environments, i.e. Cline, Copilot, Gemini, is highly desirable. The role comes with an excellent benefits package including, 25 days holiday + bank holidays, ability to purchase extra holidays, bonus scheme, life assurance, flexible Health cash-back scheme, health and wellbeing allowance, health insurance with long-term sickness, electric car scheme, cycle to work scheme, enhanced maternity/paternity, flexible working, excellent company culture, training and education opportunities, free car parking, values-led business and much more! KEYWORDS Analysis and Design, C#, MVC, .NET framework, SOLID Principles, Pair Programming / Mob Programming, TSQL, SQL, Test Automation, TDD, Refactoring, Unit Testing, Mocking, JavaScript Frameworks, React or similar, ORM, Entity Framework, Agile, Scrum. Please note, to be considered for this opportunity you MUST have the Right to Work in the UK long-term without company sponsorship as our client is not looking to sponsor candidates for these vacancies. Please note that due to a high level of applications, we can only respond to applicants whose skills and qualifications are suitable for this position. No terminology in this advert is intended to discriminate against any of the protected characteristics that fall under the Equality Act 2010. Bowerford Associates Ltd is acting as an Employment Agency in relation to this vacancy.

Software Engineer - PLC & SCADA
Line Up Aviation
Motherwell
In office
Mid - Senior
£45/hour - £60/hour
TECH-AGNOSTIC ROLE

We are seeking experienced Software Engineers with strong PLC and SCADA expertise to support cutting-edge defence technology development in Motherwell, Lanarkshire. You’ll join a multi-disciplinary team delivering high-quality software solutions in line with recognised industry standards.

** Please note \ Applicants MUST be a UK passport holder & born in the UK due to the nature of this contract.

Role: Software Engineers - PLC & SCADA Location: Motherwell Contract: 6 months initially but likely to be extended up to 23 months maximum. 37.5 hours per week. Pay rate: £45 - £60 per hour (PAYE only)

Main responsibilities:

  • Develop innovative, high quality software for leading UK defence projects
  • Utilising a variety of tools and programming languages, contribute across the full software lifecycle in a collaborative team
  • Support junior team members and lead in review/assurance activities
  • Design, implement, test, and deploy control system solutions

Ideal candidate profile:

Background in Instrumentation & Control Engineering (or similar) Strong knowledge of PLC programming, SCADA, and DCS systems Candidates MUST be UK passport holders & born in the UK Vetting process will also include 5 years’ referencing & a drug screen

If you are interested in applying for this position and you meet the requirements, please apply immediately.

Due to the number of applications we receive, it’s not always possible to contact unsuccessful applicants. Unless you hear from us within 14 days of your application, please assume that you have been unsuccessful on this occasion. "Follow @LineUpAviation on Twitter for all of our latest vacancies, news and pictures from our busy UK Head Office. Interact with us using the #LineUpAviation tag at anytime! Thank you for your follow

Spotlight
Software Engineer (contract)
Opencast
Multiple locations
Hybrid
Mid
£350/day - £450/day
+4

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.

Spotlight
Senior Software Engineer (contract)
Opencast
Multiple locations
Hybrid
Senior
£450/day - £600/day
+4

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.

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Frequently asked questions
Haystack features a wide range of contract Backend Engineer positions, including roles in startups, mid-sized companies, and large enterprises across various industries such as fintech, healthcare, and e-commerce.
To apply, simply create a profile on Haystack, upload your resume, and submit your application directly through the job listing. Some employers may require additional screening or coding tests.
Haystack offers both remote and on-site contract Backend Engineer positions. You can filter job listings based on location preferences to find opportunities that match your availability.
Commonly required skills include proficiency in backend programming languages like Java, Python, Ruby, or Node.js, experience with databases such as MySQL or MongoDB, and familiarity with cloud platforms like AWS or Azure.
Yes, many contract Backend Engineer jobs on Haystack allow for negotiation on contract length, hourly rate, and other terms. Communication with the employer or recruiter during the interview process will help clarify these details.