CONTRACT Backend Engineer Jobs

Make yourself visible and let companies apply to you.

Roles

CONTRACT Backend Engineer Jobs

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!

Filters applied

Backend Engineer

Contract

Salary

Location

Remote preference

Role type

Seniority

Tech stack

Sectors

Contract type

Company size

Visa sponsorship

Hybrid (Client Site Visits in London)

Inside IR35

6 months contract

We are currently looking for an experienced Full Stack Developer to join a high-performing team delivering secure, scalable digital solutions for a government client. This is a hybrid role, with a mix of remote work and regular visits to client sites in London.

This role is inside IR35 and requires active SC clearance (Security Check). Applicants without valid and current SC clearance cannot be considered, due to the time scale of the project.

Role Overview:

As a Full Stack Developer, you will contribute across the full development life cycle-designing, developing, and maintaining modern web applications. You will work in a collaborative environment alongside product owners, designers, and other developers, delivering high-quality software in a fast-paced, agile setting.

Key Responsibilities:

Develop scalable, high-performance web applications across the full stack.

Create responsive, user-centric Front End interfaces using React and TypeScript.

Build robust Back End services using Java and the Spring framework.

Work with cloud-native microservices on Kubernetes, hosted on Red Hat OpenShift.

Implement and manage CI/CD pipelines using GitHub and ArgoCD.

Collaborate closely with cross-functional teams including DevOps, QA, and UX.

Maintain clean, well-documented, and tested code; conduct and participate in code reviews.

Stay current with industry trends and emerging technologies.

Required Skills & Experience:

Active SC Clearance (must be current).

Proven experience as a Full Stack Developer in enterprise environments.

Strong Front End expertise with React, JavaScript, TypeScript, HTML/CSS.

Back End proficiency with Java (Spring Boot) and ideally Node.js.

Hands-on experience with Kubernetes and Red Hat OpenShift.

Familiarity with CI/CD practices using GitHub Actions, ArgoCD.

Version control with Git.

Strong understanding of software engineering best practices and Agile methodologies.

Excellent problem-solving, communication, and team collaboration skills.

Nice to Have:

Experience with PostgreSQL or other relational databases.

Exposure to cloud platforms such as AWS, Azure, or GCP.

Background in government or highly regulated sectors is a plus.

NET Developer - Blackpool (Hybrid) - £400pd (Outside IR35)

.NET Developer - Blackpool (Hybrid) - 400pd (Outside IR35)

Location: Blackpool (Hybrid)

Contract Type: 6 Months (Outside IR35)

Rate: Up to 400 per day DOE

One of Harvey Nash’s most notable clients based in Blackpool are looking for .NET Developer on an initial 6 Month contract. This is a hands-on role ideal for someone who thrives in a fast-paced environment and enjoys working across modern and legacy technologies.

Requirements:

Strong hands-on experience with .NET and C#

Experience maintaining ASP.NET applications.

Proven ability to work across both modern and legacy codebases.

Maintain and enhance legacy ASP.NET applications.

Familiarity with Agile and Waterfall delivery models.

If interested, apply now for immediate consideration for the role!

.NET Developer - Blackpool (Hybrid) - 400pd (Outside IR35)

Software Developer (Power Systems Application)

Are you ready to take your software development skills to the next level? We are on the lookout for a talented and enthusiastic Power Systems Application Software Developer to join our team on a temporary contract for 12 months. If you thrive in a fast-paced environment and are eager to contribute to innovative projects, this is the perfect opportunity for you!

Your Role:

As a PSA Software Developer (Advanced Energy Management Systems), you will play a vital role in designing, developing, and implementing software. You’ll work closely with cross-functional teams to deliver high-quality solutions that meet our clients’ needs.

Key Responsibilities:

Design and develop robust, scalable, and efficient software solutions.

Conduct thorough testing and debugging to ensure software quality.

Provide ongoing support and maintenance for existing applications.

Stay updated on industry trends and best practises to continuously enhance our software.

What We’re Looking For:

Proven experience in software development, particularly with Power Systems Applications software.

AEMS Platform source design and development

Advanced Energy Management Systems (AEMS) - e-terra desirable

Proficiency in programming languages such as Java, C++, or related language.

Strong understanding of database management.

Excellent problem-solving skills and attention to detail.

Ability to work effectively in a team and communicate ideas clearly.

Contract Details:

Contract Type: Temporary

Contract Length: 12 months

Inside IR35

Fully Remote

SC Cleared Zscaler Engineer

ECS Resource Group Limited

Initial 3-month Contract Role

Remote Working

£500 - £600, Inside IR35

We’re recruiting on behalf of an IT Services Provider assisting them with a search for Zscaler Engineer to lead the integration of Zscaler One API into an existing platform.

As an Zscaler Engineer, you will be responsible for:

* Extend and enhance existing platform capabilities to integrate Zscaler One API

* Expose Zscaler functionality as internal APIs for automation

* Provide API endpoints for internal automation

* Implement automated security policy workflow, including rule request processes

Proven skills and experience to help succeed in this role include:

* Hands-on experience with Zscaler including Zscaler One API

* Proven ability to build secure APIs for internal use

* Strong understanding of automated security policy management

* Active SC Clearance

Further information available upon application, please contact me directly

ECS Recruitment Group Ltd is acting as an Employment Business in relation to this vacancy.

Java Software Engineer

Morson International (IT)

The Software Engineer will be working on innovative Geospatial software, using the latest cloud-based technologies. The engineer will be involved in every stage of the software development life cycle, from initial design through development, testing, and deployment, delivering robust, scalable cloud-based services.

The role can be based out of our clients Newcastle or Guildford office. Flexible working arrangements are in place for the team. The successful candidate is expected to be in the office 3 days a week, with the opportunity to work 2 days from home.

Responsibilities

Develop high-quality, readable, scalable and easily maintained code, using Java and related technologies, meeting requirements and coding standards.

Develop reusable patterns and encourage innovation that will enhance team velocity.

Contribute to quality assurance by writing unit and automated tests.

Conduct design and code reviews to ensure code developed meets coding best practices guidelines, unit testing, security, and scalability and maintainability guidelines

Ensure code is sufficiently documented and share knowledge of solutions implemented.

Participate in sprint planning, reviews, and daily stand-ups in a true Agile environment, contributing to agile based estimating.

Work with the scrum team to meet the sprint commitments

Skill Set

Essential

Java

Cloud Services development

Unit testing

Desirable

DevSecOps awareness using tools such as Tekton, ArgoCD, SonarQube

Red Hat Openshift container platform or Kubernetes

Quarkus Framework

Front End development using Angular

Software Engineer - MongoDB/Django

Our client is looking for a Senior Software Engineer, who is an expert in MongoDB.

They are currently looking for MongoDB and Django and are looking for someone to design and build solutions for them to overlap/interlink.

This is a software engineer position, not a data engineer role.

Hands-on experience building solutions to link DjangoDB and MongoDB

InterQuest Group is acting as an employment agency for this vacancy. InterQuest Group is an equal opportunities employer and we welcome applications from all suitably qualified persons regardless of age, disability, gender, religion/belief, race, marriage, civil partnership, pregnancy, maternity, sex or sexual orientation. Please make us aware if you require any reasonable adjustments throughout the recruitment process.

Python Software Engineer

Job Title: Full Stack Software Engineer (React/Python/AWS)

Location: up-to 2x/week in Leeds

Rate: £500/day Inside IR35

Employment Type: Contract

We’re looking for a talented Full Stack Software Engineer with a focus on delivering high-quality, user-centric products. This role leans towards the Front End (70%), working primarily with React, while also contributing to the Python-based Back End. You’ll also play a key role in shaping and scaling AWS infrastructure, so strong cloud experience is essential.

Tech Stack:

Front End: React, Next, HTML5, CSS3

Back End: Python (FastAPI/Flask/Django)

Cloud: AWS (EC2, Lambda, S3, CloudFormation/CDK, RDS, etc.)

CI/CD & DevOps: GitHub Actions, Docker, Terraform

Testing: Jest, React Testing Library, Pytest

What You’ll Be Doing:

Building intuitive, responsive, and accessible UIs using React and modern JS tooling

Designing and developing scalable APIs and Back End logic in Python

Working closely with designers, product managers and other engineers to bring ideas to life

Deploying, maintaining, and optimising infrastructure on AWS

Writing clean, testable code and participating in code reviews

Contributing to architectural decisions and technical strategy

What We’re Looking For:

Proven experience in full stack development with a strong bias toward Front End

Deep expertise in React and Front End best practices

Solid Back End experience with Python

Strong AWS skills and experience deploying production systems in the cloud

Experience working in an Agile environment

Familiarity with DevOps tooling and CI/CD pipelines

A collaborative mindset and great communication skills

Nice to Have:

Experience with serverless (eg AWS Lambda)

Exposure to data pipelines or Real Time systems

Familiarity with design systems or component libraries

Apply now or email for more information.

Java Developer

Whitehall Resources Ltd

Whitehall Resources are currently looking for a Java Developer based 2 days a week onsite in Shropshire, remainder remote for an initial 6 month contract.

*MUST BE SC ELIGIBLE.*

*INSIDE IR35.*

Our client are looking for a Java Developer to write the low-level design and build some transformation code to transform data from CESA to the ETMP design which will be hosted in an Oracle database.

Presentation Layer:

Remix React Framework

JavaScript

Form generation ‘engine’

Service Layer:

Java - is vital

Spring

.NET (to support an existing project)

Object Oriented Design

JPA

Maven

Gitlab (understanding of Git at least is essential)

JDBC

Proven leadership skills

Good communication skills

Proven team engagement skills

Proven coaching skills

Quality Driven

Adaptable/ability to context switch

Stakeholder Management

Sustainable Software Engineering

All of our opportunities require that applicants are eligible to work in the specified country/location, unless otherwise stated in the job description.

Whitehall Resources are an equal opportunities employer who value a diverse and inclusive working environment. All qualified applicants will receive consideration for employment without regard to race, religion, gender identity or expression, sexual orientation, national origin, pregnancy, disability, age, veteran status, or other characteristics.

Collibra Developer

LA International Computer Consultants Ltd

Our client is looking for a number of Collibra Developers to design, implement, and optimize metadata management and data governance solutions using the Collibra platform. The role requires the candidate to be able to travel to Sheffield twcie a week and rest remtoely. This role is Inside IR35.

Essential skills/knowledge/experience:

* Excellent written and verbal communication skills; presentation skills preferred

* Proficiency in Collibra APIs, Java, Groovy, and REST integrations.

* Strong SQL knowledge and familiarity with common databases (Oracle, PostgreSQL, DB2, BigQuery, etc.).

* Experience with ETL/ELT tools (Informatica, DataStage, etc.) and BI platforms (Qlik, Power BI, etc.).

* Understanding of metadata standards, data lineage, reference data, and business glossaries.

* Experience with cloud platforms (AWS, GCP, Azure) and hybrid data ecosystems.

* Strong problem-solving skills, with the ability to design scalable, enterprise-grade Collibra solutions.

LA International is a HMG approved ICT Recruitment and Project Solutions Consultancy, operating globally from the largest single site in the UK as an IT Consultancy or as an Employment Business & Agency depending upon the precise nature of the work, for security cleared jobs or non-clearance vacancies, LA International welcome applications from all sections of the community and from people with diverse experience and backgrounds.

Award Winning LA International, winner of the Recruiter Awards for Excellence, Best IT Recruitment Company, Best Public Sector Recruitment Company and overall Gold Award winner, has now secured the most prestigious business award that any business can receive, The Queens Award for Enterprise: International Trade, for the second consecutive period.

IBM ACE / IIB Lead Engineer - INSIDE IR35

IBM ACE / IIB Lead Engineer

Inside IR35

Hybrid - 2 days per month on site in Warwickshire

6 months + possible extension

Brief

My client is looking for two experienced Lead IBM ACE Engineers to join on a 6-month basis to oversee delivery of major enterprise integration programmes.

Project 1: Lead integration for the ACE Integration (BRIDGE) programme

Project 2: Lead integration for the IBM MDM solution, replacing the current SaaS platform

Key Responsibilities

Oversee ACE integration across enterprise systems, including IBM MDM and Guidewire

Provide technical direction, frameworks, and best practice guidance to onshore and offshore external resources

Provide quality checks across the development team, providing guidance on work and frameworks to implement and focusing on the general overseeing of projects ensuring they’re completed to a high standard

Required Skills

Strong technical background in IIB / ACE integration solutions - with expertise in design, code management, and monitoring

Experience working in an Agile environment

Demonstrable track record in leading integration projects, with responsibility for oversight, quality assurance, and stakeholder management

Excellent communication and leadership skills, able to coordinate multiple streams of work across onshore and offshore teams.

Desirable Skills and Experience

Knowledge of Azure integration tools (Logic Apps, Function Apps, APIM, ADF)

ACE Gateway API Manager

Experience working in a regulated environment (public sector, healthcare, defence, etc)

Modis International Ltd acts as an employment agency for permanent recruitment and an employment business for the supply of temporary workers in the UK. Modis Europe Ltd provide a variety of international solutions that connect clients to the best talent in the world. For all positions based in Switzerland, Modis Europe Ltd works with its licensed Swiss partner Accurity GmbH to ensure that candidate applications are handled in accordance with Swiss law.

Both Modis International Ltd and Modis Europe Ltd are Equal Opportunities Employers.

By applying for this role your details will be submitted to Modis International Ltd and/ or Modis Europe Ltd. Our Candidate Privacy Information Statement which explains how we will use your information is available on the Modis website.

SQL Developer

Consortium Professional Recruitment Ltd

SQL Developer Industry 4.0

6 Month FTC

Salary: £65,000 £80,000 (pro rata for 6 months)

Contract: Fixed Term, 6 months

Location: Hybrid - Hull (3 days onsite per week)

Are you a SQL Developer who thrives on solving complex data challenges and making systems smarter, faster, and more efficient? This 6-month FTC is a chance to get hands-on with cutting-edge Industry 4.0 and Smart Manufacturing projects, where your work will directly impact real-time operations.

What you ll be doing:

Developing and optimising SQL Server solutions to support real-time data feeds from machines, sensors, and production lines

Managing and enhancing time series data pipelines to power predictive analytics and performance monitoring

Working on push notifications, protocols, and query optimisation to keep data fast, clean, and actionable

Driving the migration to Microsoft Fabric, with a focus on KQL (Azure Data Explorer/Fabric Real-Time Analytics)

Collaborating with cross-functional teams in an Agile environment to deliver scalable, high-value solutions

Supporting reporting and analytics - Power BI now, Microsoft Fabric in the future

What we re looking for:

5+ years of SQL Server development experience (T-SQL, stored procedures, optimisation)

Strong background in real-time data environments and industrial telemetry

Passion for innovation and making data work harder in a manufacturing context

Familiarity with Industry 4.0 / Smart Factory concepts or demonstrable interest and ability to adapt to these challenges

Experience working in Agile teams delivering incremental improvements

Nice to have:

Exposure to industrial IoT protocols (MQTT, OPC UA) or edge computing

Knowledge of Azure services (Event Hubs, IoT Hub, Synapse)

Experience with predictive maintenance or manufacturing KPIs

Why join this project?

Be at the forefront of a Smart Manufacturing and Industry 4.0 transformation

Work in a hybrid pattern - typically 3 days per week onsite in Hull, with flexibility for remote working

Deliver solutions that shape how data is captured, optimised, and used across manufacturing operations

Join a forward-thinking team modernising data infrastructure for scalable, real-time insights

We are actively shortlisting so if you are looking for your next contract, please reach out for a confidential chat!

Consortium Professional Recruitment Ltd are a professional level recruitment consultancy specialising in the delivery of high relevance recruitment services on behalf of our clients across the UK. We regularly receive large responses to our advertising which can make providing individual feedback to every applicant challenging. If you haven t received a reply from us within 14 days of your application, we regret to say your application has been unsuccessful on this occasion. We have a policy of retaining your details for future vacancies unless you request otherwise. To learn more about our services, please visit (url removed)

Senior C#/Angular Developer - Commodities, Trading

**Senior C#/Angular Full Stack Developer - Commodities/Trading sought by leading financial services organisation based in West London.

Outside IR35 - 3 days a week on site**

SUMMARY

This role will suit a full-stack developer, with a broad, yet modern skill set and a proven track record, who ideally has some knowledge and experience of the commodity or financial trading sectors.

Key Responsibilities:

Full stack developer with around 8-10 years development experience, working in a agile development team to deliver robust enterprise-wide solutions utilising industry standard practices

Design, develop, enhance and maintain applications using agreed coding standards and quality targets.

Ensure quality via code reviews and thorough unit testing.

Liaise with immediate scrum team, other scrum/project teams, line manager and development lead to ensure accurate and complete delivery.

Contribute to the development and implementation of software development best practices within the organisation.

Writing clean and efficient code using relevant programming languages to implement the designed features and functionality.

Key Competencies & Skills:

Knowledge of oil, wet bulk or energy trading and risk management business

Software Development Methodologies: Understanding of Agile development practices and project management tools

Communication Skills: Effective communication to collaborate with stakeholders, gather requirements, and explain technical concepts

Problem-solving Skills: Ability to troubleshoot technical issues and identify creative solutions

Experience and expertise with the following technical stack

Angular 13+ with DevExtreme UI library desirable

Playwright, ReadyAPI and Specflow.

Jira, Github, Confluenc

Nice to have -

C# and .NET6+

Rest API’s and Microservice architecture

SQL Server Database, NHibernate or Entity Framework

Demonstrate expertise of:

Building modern-web applications

Modern UI design principles. i.e. Able to take initial design direction and interpret those guidelines to finalise the design through to a solution

Restful API Design and development fundamentals

Good SQL knowledge

Test case preparation and execution

EDUCATION & EXPERIENCE REQUIREMENTS

8-10 years’ experience designing and developing applications both individually and as part of a team

Familiarity with energy or financial trading environment

Strong inter-personal and communication skills (both verbal and written)

Strong problem-solving skills and the ability to develop innovative solutions to technical problems

Experience of working in an Agile/Scrum team environment

Educated to Degree-level (or equivalent), as a minimum requirement

Please apply within for further details or call on (phone number removed)

Alex Reeder

Harvey Nash Finance & Banking

AI Core Senior Developer - Cambridge

Job Title: AI Core Senior Software Developer

Location: Cambridge - 3 days a week on-site

Salary/Rate: £600-£630/day inside IR35.

Start Date: October 2025

Job Type: Contract

We are looking for passionate and skilled Software Developers to join our Core AI Services team. In this role, you will help design, develop, and scale AI-enabling platform services and public APIs that are secure, reliable, and cloud-native. These services will act as foundational building blocks for AI adoption across our client’s portfolio and partner ecosystem.

You will be part of a Scrum team to build innovative, standards-compliant, secure, and production-grade AI capabilities, with a builder mindset - rapid prototyping and continuous improvement with the agility of a start-up.

Key Responsibilities:

Build scalable, fault-tolerant cloud-native services on Microsoft Azure, ensuring high performance and reliability. 3

Develop secure, well-documented public APIs and SDKs for consumption by internal and external developers. 2

Collaborate with cross-functional teams to deliver end-to-end solutions across data pipelines, orchestration, and service APIs. 3

Embed robust security controls to protect sensitive data and ensure secure access to AI services. 3

Contribute to design reviews, code reviews, and architectural discussions to ensure engineering excellence. 3

Mentor junior developers, encourage continuous learning, and contribute to a culture of innovation. 3

Work with multiple teams to create AI solutions, which include AI model deployment, training, and AI tooling development. 2

AI & Cloud Expertise

Experience working with Large Language Models (LLMs) and understanding of trade-offs between performance, cost, and capability.

Understanding of Retrieval-Augmented Generation (RAG), agent orchestration, prompt engineering, and tool calling.

Familiarity with AI standards such as Model Context Protocol (MCP) and Agent2Agent (A2A).

Strong knowledge or experience in working with various ML algorithms (regression, classification, clustering, deep learning)

Knowledge of AI ethics and regulations (eg, NIST AI RMF, EU AI Act), and commitment to responsible AI development.

Fluent in developing code using AI Tools such as GitHub Copilot. Must be able to use prompt engineering to carry out multiple development tasks.

Familiar with AI orchestration, including tools like AI Foundry and/or Semantic Kernel.

Experience with tools for automated testing and evaluation of AI outputs is a plus.

Experience in Python and AI frameworks/ools such as PyTorch and TensorFlow.

Core Skills and Qualifications:

Experience in software engineering, preferably in platform or cloud-native service development using Microsoft and .NET technologies.

Hands-on experience with Microsoft Azure and associated PaaS services (eg, Azure Functions, AKS, API Management).

Strong expertise in RESTful API design, versioning, testing, and life cycle management.

Proficient in securing APIs, managing authentication/authorization and data privacy practices.

Excellent problem-solving skills, with the ability to analyse complex technical challenges and propose scalable solutions.

Experience working in Agile teams and collaborating across global R&D locations

Demonstrated ability to mentor junior team members fostering a culture of continuous learning and innovation

Demonstrated experience with AI frameworks, tools and Python

Contract Kdb+ Developer - Capital Markets - Outside IR35 - UK/Belfast

Kdb+ Developer - Capital Markets

We are seeking a skilled contract kdb+ Developer for a fast-paced Capital Markets/Investment Banking client.

Key Requirements:

Strong background in kdb+ development

Logical problem-solver with a keen eye for detail

Excellent communication and client-facing skills

Solid understanding of the Software Development Life Cycle

Desirable Skills:

Python or other programming languages

Time series and other data solutions experience

Exposure to cloud development

Experience in financial institutions

Leadership or people management experience

Contribution to wider tech ecosystems

Outside IR35- Immediate start

6-12 months

Day rate - £800-900 per day.

This is an exciting opportunity to work on high-impact systems, contribute to innovative financial solutions, and grow within a collaborative and driven team.

If you are interested please apply.

IBM ACE/IIB Lead Engineer - INSIDE IR35

IBM ACE/IIB Lead Engineer

Inside IR35

Hybrid - 2 days per month on site in Warwickshire

6 months + possible extension

Brief

My client is looking for two experienced Lead IBM ACE Engineers to join on a 6-month basis to oversee delivery of major enterprise integration programmes.

Project 1: Lead integration for the ACE Integration (BRIDGE) programme

Project 2: Lead integration for the IBM MDM solution, replacing the current SaaS platform

Key Responsibilities

Oversee ACE integration across enterprise systems, including IBM MDM and Guidewire

Provide technical direction, frameworks, and best practice guidance to onshore and offshore external resources

Required Skills

Strong technical background in IIB/ACE integration solutions - with expertise in design, code management, and monitoring

Experience working in an Agile environment

Demonstrable track record in leading integration projects, with responsibility for oversight, quality assurance, and stakeholder management

Excellent communication and leadership skills, able to coordinate multiple streams of work across onshore and offshore teams.

Desirable Skills and Experience

Knowledge of Azure integration tools (Logic Apps, Function Apps, APIM, ADF)

ACE Gateway API Manager

Experience working in a regulated environment (public sector, healthcare, defence, etc)

Both Modis International Ltd and Modis Europe Ltd are Equal Opportunities Employers.

By applying for this role your details will be submitted to Modis International Ltd and/or Modis Europe Ltd. Our Candidate Privacy Information Statement which explains how we will use your information is available on the Modis website.

ServiceNow Developer: ServiceNow, Advice & Guidance, Coding, Design

ServiceNow Developer: ServiceNow, Advice & Guidance, Coding, Design - (RL7997)

Our Global Enterprise client is looking a Sr. ServiceNow Developer/Consultant to provide advice and guidance on all matters relating to ServiceNow implementation and technical best practice.

Start Date: ASAP

Duration: 60 days (initially)

Pay Rate: £528 p/d (PLEASE NOTE: Employer NI is paid for by the client)

IR35 Status: Outside

Location: Hatfield

NOTE: Active SC Clearance is highly desirable.

Responsibilities:

Designing high quality ServiceNow solutions, while providing advice and guidance on all matters relating to ServiceNow implementation and technical best practice.

Delivering design & high quality ServiceNow implementations based on business process requirements. REMOVE THIS WHOLE POINT

Advanced NOW Platform Implementation understanding, with in-depth knowledge in additional ServiceNow applications.

Able to communicate on complex issues, to meet business and customer requirements to avoid escalations.

Keep up to date with current and future market developments, technologies, products and strategies.

Ensuring adherence to our coding and design standards and providing technical hand-over documentation.

Increasing application operating efficiency and adapting to new requirements, as necessary.

Assisting with system testing and UAT.

Escalate issues in line with company processes, to ensure customer demands are met.

Attend and present at customer meetings to ensure understanding of customer requirements and to assist with knowledge transfer.

Recording, qualification and questioning of customer requirements, even in complex projects and in the case of unclear customer requirements.

Soft Skills:

Flexible approach and ability to work co-operatively within a newly created team environment

Should be a self-starter and be able to perform quality assurance and control to create technical deliverables that are error free/with minimal non-functional defects.

Experience in operationally supporting large, complex technical environment.

Methodical and structured in their approach to tasks.

Capability to organise and prioritise tasks

Strong interpersonal skills to establish/maintain relationships and interact with team members

Strong organisation and time management skills

Strong analytical and problem-solving skills

To apply for this ServiceNow Developer contract job, please click the button below and submit your latest CV.

Curo Services endeavours to respond to all applications, however this may not always be possible during periods of high volume. Thank you for your patience.

Curo Services is a trading name of Curo Resourcing Ltd and acts as an Employment Business for contract and temporary recruitment as well as an Employment Agency in relation to permanent vacancies.

CLM IIB (Middleware) Developer

Job Title: CLM IIB (Middleware) Developer

Length of Contract: 6 Months

Pay Rate: 415 PWD via Umbrella

Location: London, harbour exchange

Hybrid model: 3 days a week in the office

Description:

We are seeking a talented CLM IIB Developer to join our client’s development team in London. You will be responsible for developing, maintaining, and supporting the Bank’s internal and external application interfaces, including IBM Integration Bus / ACE message flows, APIs, and database integrations.

Key Responsibilities:

Develop and maintain IIB / ACE message flows and DFDL models.

Support production interfaces and troubleshoot issues.

Work with application teams to deliver high-quality solutions.

Participate in code reviews and maintain technical documentation.

Ensure smooth operation of interfaces across Europe and North America.

Required Skills:

IBM Integration Bus / ACE, IBM MQ, MQFTE

API Connect / Azure API Management, Apache Kafka

Java, Korn Shell, PERL, Ant, SQL, ESQL

Oracle (10G/11i), PL/SQL

UNIX/Linux/Windows experience

Strong communication and problem-solving skills

Desirable:

Experience with financial services

Knowledge of payment formats (SWIFT, NACHA, SEPA)

Familiarity with testing tools (SOAP-UI, JUnit, MBTestClient)

Please be advised if you haven’t heard from us within 48 hours then unfortunately your application has not been successful on this occasion, we may however keep your details on file for any suitable future vacancies and contact you accordingly.

Pontoon/Adecco is an employment consultancy. We put expertise, energy, and enthusiasm into improving everyone’s chance of being part of the workplace. We respect and appreciate people of all ethnicities, generations, religious beliefs, sexual orientations, gender identities, and more. We do this by showcasing their talents, skills, and unique experience in an inclusive environment that helps them thrive.

ServiceNow Developer - Outside IR35 Contract

Duration: 6 months (initial)

Location: South Manchester (Hybrid - flexible onsite requirements)

IR35: Outside IR35

CTC Required: You must have been a resident of the UK for at least the past 3 years.

Role & Project Overview:

One of our key clients is bringing their ServiceNow capability in-house and is looking for a highly skilled, self-sufficient ServiceNow Developer to make an immediate impact.

What You Will Do:

Work independently (no handholding)

Deliver against well defined user stories in Agile sprints

Build APIs, produce documentation, and deliver high quality outcomes

Key Skills & Experience:

Several years’ experience with ServiceNow.

Strong SPM knowledge

Consulting background preferred.

ServiceNow Certified System Administrator.

ITSM Implementation Specialist.

SPM or HR certification/specialism.

Strong platform competency - able to build APIs, produce documentation, and work effectively in Agile.

Ability to prioritise and manage work effectively.

Comfortable with well-defined user stories and standard sprint ceremonies.

Technologies / Modules You’ll Work With:

SPM Module (strongly preferred)

HR Module

ITSM Module

ServiceNow Developer - Outside IR35 Contract

Morson International (IT)

Duration: 6 months (initial)

Location: South Manchester (Hybrid - flexible onsite requirements)

IR35: Outside IR35

CTC Required: You must have been a resident of the UK for at least the past 3 years.

Role & Project Overview:

One of our key clients is bringing their ServiceNow capability in-house and is looking for a highly skilled, self-sufficient ServiceNow Developer to make an immediate impact.

What You Will Do:

Work independently (no handholding)

Deliver against well defined user stories in Agile sprints

Build APIs, produce documentation, and deliver high quality outcomes

Key Skills & Experience:

Several years’ experience with ServiceNow.

Strong SPM knowledge

Consulting background preferred.

ServiceNow Certified System Administrator.

ITSM Implementation Specialist.

SPM or HR certification/specialism.

Strong platform competency - able to build APIs, produce documentation, and work effectively in Agile.

Ability to prioritise and manage work effectively.

Comfortable with well-defined user stories and standard sprint ceremonies.

Technologies/Modules You’ll Work With:

SPM Module (strongly preferred)

Job Title: Software Engineer - Python

Location: Edinburgh | Office-Based

Day Rate: £425 (Inside IR35)

Contract Duration: 6 months

The Role

We are seeking a skilled and hands-on Python Developer to join our team, focusing on applications within the Power Utilities domain. The successful candidate will contribute to the design, development, and delivery of high-quality software solutions, following best practices and Agile methodologies.

Key Responsibilities:

Develop applications using Python.* Apply strong knowledge of software development and delivery life cycles.* Work within Agile teams to deliver high-quality solutions.* Participate in software testing and the release process.* Support software delivery and deployment activities.

Essential Skills & Experience:

Proficient in Python development.* Solid understanding of software development life cycles and Agile methodology.* Experience in software delivery and release processes.

Desirable:

Experience in the Power Transmission and Distribution domain.

Power Systems Applications Engineer - Network transmission

Infoplus Technologies UK Ltd

Your responsibilities:

Responsible for advanced Power Systems Application software development and successful delivery of assigned functions to meet corporate project/product commitments.

The responsibilities include: working with Electric Utilities or ISOs (Independent System Operators) and Transmission System Operators (TSOs) on functional software specifications, designing, coding, testing, integration, application tuning and delivery.

Essential skills/knowledge/experience:

5+ years of relevant work experience in customizing and delivering Energy Management Systems preferably e-terrra AEMS - Reliance

5 + years of relevant experience with C++, Java or other related language.

5+ years of relevant experience with the client’s AEMS Reliance source design and development.

5+ years of relevant experience with electric utility industry practices.

5 years of relevant experience with Linux and Windows Operating Systems

5 years of relevant experience with C, Java & Oracle Database

SQL, Shell Scripting, ability to read and interpret logs & debug files

Installation of Operating system patches and other 3rd Party Software such as Oracle, NetApp etc.

System configuration and Hands on Experience in GitHub and ClearCase

5 years of relevant experience on Realtime or Mission Critical Systems

Must have experience in picking up and installing fixes on live customer systems

Proven track record of problem analysis, identification and resolution

Strong troubleshooting & debugging skills

Good communication skills (verbal and written)

MS Office applications (Word, PowerPoint, Excel) and MS Outlook competency

Reliance (Formerly known as XA/21) experience

Object-Oriented programming techniques, Oracle, and/or system administration, is a plus

Page 1 of 8

Frequently asked questions

What types of contract Backend Engineer jobs are listed on Haystack?

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.

How do I apply for a contract Backend Engineer job on Haystack?

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.

Are the contract Backend Engineer jobs remote or on-site?

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.

What skills and technologies are commonly required for contract Backend Engineer roles?

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.

Can I negotiate contract terms such as duration and rate?

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.

Terms

Feedback

Contact

Careers