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Overview
Find top contract AI/ML engineer jobs on Haystack, your go-to IT job board for cutting-edge tech roles. Whether you're an experienced machine learning developer or an AI specialist, explore flexible contract opportunities with leading companies driving innovation. Start your next AI/ML contract position today and advance your career in artificial intelligence and machine learning!
AI Prompt Engineer
Harvey Nash
Edinburgh
Remote or hybrid
Mid - Senior
Private salary
RECENTLY POSTED

AI Prompt Engineer - 12 Month Contract - Outside IR35

Role Description:

Harvey Nash’s Pub Sec client are seeking an AI Prompt Engineer to design, develop, and optimise prompt-based solutions for AI systems.

This role will design and optimise AI prompts for extracting data from forms, fine-tune models for accuracy, automate end-to-end workflows, and manage production deployments. The ideal candidate will ensure robust, scalable, and secure AI solutions that streamline document processing

The initial focus of the role will look at building on exiting solution to extract structured data from various forms and documents. This role combines expertise in natural language processing (NLP), prompt engineering, and workflow automation to enable accurate and efficient data processing.

Key Responsibilities:

  • Prompt Design & Optimisation:

  • Develop and refine AI prompts to accurately extract data fields from structured and semi-structured forms.

  • Test and iterate prompts for different document types and languages to maximize accuracy and reliability.

  • Ensure prompt development is reusable and scalable across different use case scenarios

  • Work closely with developers, data scientists, and business analysts to align solutions with business needs.

  • Fine-tune AI models to improve performance across diverse document types and languages.

  • Workflow Automation

  • Develop automated pipelines for document ingestion, data extraction, and validation.

  • Integrate AI solutions with OCR tools and enterprise systems for seamless processing.

  • Deployment & Support

  • Manage deployment of AI solutions into production environments.

  • Monitor system performance, troubleshoot issues, and provide ongoing support.

  • AI Model Integration*:

  • Collaborate with data scientists and developers to integrate prompt-based solutions into existing AI/ML pipelines.

  • Ensure compatibility with OCR tools and document processing systems.

  • Data Quality & Validation:

  • Implement validation logic to ensure extracted data meets quality standards.

  • Work with QA teams to identify and resolve extraction errors.

  • Research & Innovation:

  • Stay updated on advancements in prompt engineering, LLMs, and document AI technologies.

  • Experiment with new techniques for improving extraction performance and reducing manual intervention.

  • Collaboration & Documentation:

  • Partner with business analysts to understand form structures and data requirements.

  • Document prompt strategies, workflows, and best practices for internal knowledge sharing.

  • Document guidance to support deployment approach and ongoing support and maintenance activities

Required Skills & Qualifications

  • Strong understanding of Large Language Models (LLMs) and prompt engineering principles.
  • Experience with document AI, OCR technologies, and data extraction workflows.
  • Proficiency in Python or similar languages for automation and integration tasks.
  • Familiarity with APIs and cloud-based AI services (e.g., Azure OpenAI, AWS, Google AI).
  • Excellent problem-solving skills and attention to detail.
  • Background in NLP, machine learning, or data science.
  • Experience with form processing systems in finance, healthcare, or enterprise environments.
  • Knowledge of data privacy regulations and secure handling of sensitive information.
  • Demonstrated success in delivery across both distributed and hybrid on-premises and cloud technology estates.
  • Experience in managing both agile and waterfall projects.
  • Excellent interpersonal skills, influencing and communication skills.
  • Ability to apply a broad understanding of IT infrastructure and interdependencies to create effective, risk-minimising migration plans.
  • The candidate will have an awareness of Digital First Service Standards, and Government Digital Services (GDS).
Data Science Practitioner
Randstad Digital
Glasgow
Remote or hybrid
Senior - Leader
£250/day - £375/day
RECENTLY POSTED
TECH-AGNOSTIC ROLE

We are looking for a senior Data Science Practitioner to lead the charge in designing and delivering AI/ML-based decision-making frameworks. You won’t just build models; you will be the architect of business outcomes, translating complex data into measurable value.
As a subject matter expert, you will mentor a high-performing team, manage cross-functional integrations, and stay at the bleeding edge of AI (RAG, MCP, and SageMaker) to keep our projects ahead of the curve.

What You’ll Do

  • Architect Decision Systems: Design innovative AI/ML models that don’t just predict-they drive strategic business decisions.
  • Lead & Mentor: Act as the technical North Star for the team, making key decisions and guiding junior scientists in best practices.
  • Bridge the Gap: Collaborate with software engineering and product teams to integrate models into the SDLC and existing workflows.
  • Measure Impact: Define and justify the ROI of AI solutions to stakeholders through rigorous evaluation frameworks.

Your Technical Toolkit

  • Advanced Mastery: Data Science & Machine Learning.
  • Cloud Expertise: Intermediate+ proficiency in Amazon SageMaker.
  • Modern AI: Familiarity with Retrieval-Augmented Generation (RAG) and Model Context Protocol (MCP).
  • Engineering Rigor: Solid understanding of the Software Development Life Cycle (SDLC).

Please let me know if you would be interested

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

Algorithm Software Engineer
Certain Advantage
Filton
Hybrid
Mid
£520/day
RECENTLY POSTED

World Class Defence Organisation based in Bristol is currently looking to recruit an Algorithm Software Engineer 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: Work alongside algorithm engineers and technical expert to transcode a large, complex legacy algorithm codebase from ADA to Matlab As part of a wider team, define, distribute and review core activities to enable efficient completion of the transcoding within project timeframe. Develop test harnesses and provide robust and extensive testing procedures to ensure equivalence between transcoded code base and legacy ADA algorithms Follow Code of Practise (CoP) in developing Matlab algorithms to ensure compatibility with auto-coding tools, rectifying/resolving issues and reframing algorithms as necessary to ensure compatibility with tool chain. Build good working relationships with stakeholders, including downstream software team, to enable effective transfer and integration of Matlab algorithm artefacts into larger product Support resolution of queries and non-compliances Skillset/experience required: Essential: Experience writing, delivering and testing algorithm related software Experience writing software/algorithms within Mathworks tools Verification of requirements and evidence review Rapid assimilation of technical information Ability to work as part of a team Desirable: Experience writing, interpreting ADA code Specific tools knowledge: IBM Engineering Workflow Management / GIT Sea launched weapons experience Experience with C TPBN1_UKTJ

Performance Info Engineer
Morson Edge
Bristol
Hybrid
Mid - Senior
£400/day - £470/day
RECENTLY POSTED

Rate: £400-470/day inside IR35
Location: Bristol, hybrid
Reports To: Head of Data Governance

6 month contract

Purpose:
The Performance Info Engineer is responsible for designing, developing, testing, and maintaining high-quality data products and pipelines that support business intelligence, analytics, and decision-making. This includes transforming and integrating data from multiple sources, ensuring alignment with architectural standards, and enabling actionable insights for project safety, quality, time, and cost management.

Key Responsibilities:

  • Translate business requirements and designs into technical solutions.
  • Develop, test, and deploy data products using Databricks, Power BI, SQL, Python, Scala, and other technologies.
  • Build, optimize, and maintain ETL/ELT pipelines and data flows for batch and streaming processes.
  • Document data mappings, transformations, and lineage; re-engineer manual processes for scalability and automation.
  • Ensure adherence to data standards, security, GDPR, and quality requirements.
  • Use agile methodologies (Azure DevOps) to manage tasks, dependencies, and deliverables.
  • Support continuous improvement, monitoring, and CI/CD deployment of data products.

Knowledge & Skills:

  • Strong technical knowledge of data engineering, BI, and analytics.
  • Ability to communicate technical concepts to non-technical stakeholders.
  • Problem-solving and proactive approach to improving data pipelines.
  • Knowledge of data ethics, security, and legal obligations.

Qualifications & Experience:

  • Degree or equivalent in a relevant field.
  • Experience in CI/CD, agile software engineering, SQL, Python/Scala, and R.
  • Professional qualifications in software engineering or information analysis are desirable.
  • Experience in nuclear, safety-critical, or regulated industries is advantageous.
Algorithms Software Engineer
Morson Edge
Gloucester
In office
Mid - Senior
£398/day - £520/day

Algorithm / Software Engineer (MATLAB / ADA)

Location: Bristol (site based)

Rate: PAYE: £49.70/hour PAYE (£56.93/hour incl. holiday) or £65/hour Umbrella

We seek an engineer with recent high-integrity or safety-critical industry experience (defence, aerospace, or similar), or eligible for UK security clearance.

Overview

An opportunity is available for an experienced Algorithm / Software Engineer to support the migration of a large, complex legacy algorithm codebase from ADA into MATLAB within a regulated engineering environment. The role sits within a multi-disciplinary team and involves close collaboration with algorithm engineers, technical specialists, and downstream software teams.

This position would particularly suit candidates with a defence or aerospace background who are familiar with high-assurance software development and verification practices.

Key Responsibilities

  • Transcode a complex legacy algorithm codebase from ADA into MATLAB in collaboration with algorithm engineers and technical experts
  • Define, distribute, and review technical activities within the wider team to support efficient delivery within project timelines
  • Develop test harnesses and implement robust testing strategies to ensure functional equivalence between legacy ADA code and MATLAB implementations
  • Develop MATLAB algorithms in line with defined Codes of Practice to ensure compatibility with auto-coding toolchains
  • Identify and resolve issues related to auto-coding compatibility, reframing algorithms where necessary
  • Work closely with downstream software teams to enable effective transfer and integration of MATLAB algorithm artefacts
  • Support the resolution of technical queries and non-compliances
  • Contribute to verification activities, including requirements verification and evidence review

Essential Skills & Experience

  • Experience writing, delivering, and testing algorithm-related software
  • Strong experience developing software and algorithms using MathWorks toolsets (MATLAB)
  • Experience with verification activities, including requirements verification and evidence review
  • Ability to rapidly assimilate complex technical information
  • Strong teamwork and collaboration skills
Data Analyst
Teksystems
Location not specified
Hybrid
Junior - Mid
£150/day - £200/day

DATA ANALYST

CONTRACT INSIDE IR35

LONDON, 2 DAYS ONSITE

Description

A proficient specialist who applies mathematical, problem-solving, and coding skills to manage data, extracting valuable insights, designing tailor-made solutions from data, aiding our business in achieving unique objectives and goals.

Reporting to the Head of Customer Operation, key accountabilities include:

  • Undertaking data collection, preprocessing and analysis
  • Building models to address business problems
  • Presenting information using data visualisation techniques
  • Support in the delivery of the charging, data and reporting services for the Customer Operations department.
  • Work collaboratively with the Customer Service Manager and peers within the Customer Management Team on the delivery of the team and departmental strategies.
  • Identify valuable data sources and automate cleansing processes
  • Undertake preprocessing of structured and unstructured data
  • Analyse large amounts (several million records) of information to discover trends and patterns
  • Build predictive models and machine-learning algorithms
  • Combine models through ensemble modelling
  • Present information using data visualisation techniques
  • Propose solutions and strategies to business challenges
  • Collaborate with engineering and product development teams

Skills

  • Sql
  • Data
  • Power Bi
  • Python
  • Data analysis

Job Title: Data Analyst

Location: London, UK

Rate/Salary: 150.00 - 200.00 GBP Daily

Job Type: Contract

Trading as TEKsystems. Allegis Group Limited, Maxis 2, Western Road, Bracknell, RG12 1RT, United Kingdom. No. 2876353. Allegis Group Limited operates as an Employment Business and Employment Agency as set out in the Conduct of Employment Agencies and Employment Businesses Regulations 2003. TEKsystems is a company within the Allegis Group network of companies (collectively referred to as “Allegis Group”). Aerotek, Aston Carter, EASi, Talentis Solutions, TEKsystems, Stamford Consultants and The Stamford Group are Allegis Group brands. If you apply, your personal data will be processed as described in the Allegis Group Online Privacy Notice available at https://www.allegisgroup.com/en-gb/privacy-notices.

To access our Online Privacy Notice, which explains what information we may collect, use, share, and store about you, and describes your rights and choices about this, please go to https://www.allegisgroup.com/en-gb/privacy-notices.

We are part of a global network of companies and as a result, the personal data you provide will be shared within Allegis Group and transferred and processed outside the UK, Switzerland and European Economic Area subject to the protections described in the Allegis Group Online Privacy Notice. We store personal data in the UK, EEA, Switzerland and the USA. If you would like to exercise your privacy rights, please visit the “Contacting Us” section of our Online Privacy Notice at https://www.allegisgroup.com/en-gb/privacy-notices for details on how to contact us. To protect your privacy and security, we may take steps to verify your identity, such as a password and user ID if there is an account associated with your request, or identifying information such as your address or date of birth, before proceeding with your request. If you are resident in the UK, EEA or Switzerland, we will process any access request you make in accordance with our commitments under the UK Data Protection Act, EU-U.S. Privacy Shield or the Swiss-U.S. Privacy Shield.

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Frequently asked questions
Haystack features a variety of contract AI/ML Engineer roles, including positions focused on machine learning model development, data analysis, natural language processing, computer vision, and AI research across different industries.To apply, create a free account on Haystack, upload your resume, and browse the available contract AI/ML Engineer jobs. When you find a suitable position, click 'Apply' and follow the application instructions provided by the employer.Haystack offers both remote and on-site contract AI/ML Engineer jobs. You can filter job listings by location and work type to find positions that match your preferences.Most contract AI/ML Engineer roles require strong programming skills in languages like Python, experience with machine learning frameworks (e.g., TensorFlow, PyTorch), knowledge of algorithms and data structures, and relevant project experience. Requirements may vary depending on the contract.Yes, Haystack lists both short-term and long-term contract AI/ML Engineer opportunities. Job postings will specify contract duration so you can choose what best fits your availability and career goals.
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