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Discover the best GitHub jobs on Haystack, your go-to IT job board for top developer opportunities. Whether you're a seasoned GitHub expert or looking to build your career in version control and collaboration, find the latest remote and onsite GitHub developer roles, software engineer positions, and more. Start your job search today and connect with leading tech companies hiring GitHub professionals!

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UX Front End Developer

+23

SheffieldFull time, Permanent.£35,000 - £50,000 DOEMonday FridayWe are hiring a UX Front-End Developer to help us deliver accessible, high-performance web applications. You ll be part of a cross-functional product team, working closely with designers, back-end engineers, and stakeholders to bring designs to life and ensure smooth integrations.As a UX Front End Developer you will be responsible for:Translating designs from Figma or Sketch into pixel-perfect, responsive web pages.Ensuring the front end looks and behaves exactly as intended across devices and browsers.Creating a well-documented component library using React and Storybook.Styling with Bootstrap 5, while maintaining flexibility for custom themes and utilities.Versioning and maintaining components through Git.Building clean and strongly typed API calls using Axios or Fetch.Implementing robust error handling and secure authentication flows.Delivering interfaces that comply with WCAG 2.1 AA standards.Achieving Lighthouse performance, accessibility, and best practice scores of 90% or above for every release.Taking part in daily stand-ups, sprint planning, demos, and retrospectives.Working closely with team members to deliver features iteratively and efficiently.Using Jest and React Testing Library for unit testing.Running end-to-end tests with Cypress or Playwright.Maintaining at least 80% test coverage across projects.Configuring and running GitHub Actions pipelines.Automating linting, testing, building, and deployment processes with no manual steps.Reviewing pull requests thoroughly and constructively.Enforcing coding standards, type safety, and documentation.Hosting brown-bag sessions on best practices (e.g. Git workflows, VS Code tips, performance tuning).Supporting less experienced developers through guidance and feedback.Staying up to date with front-end frameworks, tools, and design system trends.Proposing practical improvements to enhance our developer experience and product quality.Benefits:Career progression opportunities with a clear development path.Discounts on bars and restaurants across Sheffield.Regular company eventsFree on-site parkingA contributory pension scheme.Generous annual leave allowanceRequired technical skill set:HTML5 / CSS3: Demonstrable production code and portfolio links.JavaScript (ES6+): Minimum 2 years experience using modern syntax.React (functional components and hooks): Real-world applications and component libraries.Bootstrap 5: Skilled in custom theming and utility classes..NET (C#) & ASP.NET Core: Integrated front-end/back-end projects.TypeScript: Experience delivering fully typed React applications.State management: Redux, Context API, or similar used in shipped features.Git: Clean commit history, branching, rebasing, and PR workflow.GitHub Actions: Experience with CI pipelines that lint, test, and build.VS Code / Visual Studio: Confident in configuring settings, extensions, and launch configs.Accessibility: Knowledge of WCAG 2.1 and ARIA, with audit/test results as evidence.Testing: Jest, React Testing Library, and Cypress/Playwright, including coverage reports.Build tools: Webpack or Vite, npm or Yarn, with a focus on optimised bundles and code-splitting.CI/CD: Experience with GitHub Actions or Azure DevOps for automated deployments.Desirable skills:Experience with design systems (Storybook, Pattern Lab).GraphQL and Apollo.Next.js (SSR/SSG).Building Progressive Web Apps (PWA).Performance profiling using Core Web Vitals or Chrome DevTools.Docker for front-end containers.UX research (user testing, usability studies).Education and experienceAt least 3 years experience in front-end development, with a strong UX focus.At least 2 years experience working with .NET-backed applications.Evidence of live sites or GitHub repos demonstrating React, Bootstrap 5, accessibility, and responsive design.Regular use of Git, GitHub Actions, and VS Code / Visual Studio in a collaborative team environment.Tools and environmentYou ll be working with a modern development environment that includes:Design tools: Figma, Sketch, Adobe XD.Development tools: VS Code (with ESLint, Prettier, GitLens) and Visual Studio (for .NET).Version control: Git with feature branch workflows and protected main branches.CI/CD: GitHub Actions for linting, testing, building, and deploying.Package managers: npm and Yarn.Testing frameworks: Jest, React Testing Library, Cypress, and Playwright.Project management: Tiega.Cross-browser testing: Chrome, Edge, Firefox, Safari, and BrowserStack.

DevOps Engineer

Amtis Professional Ltd

+10

DevOps Engineer - Remote -1 Day P/W Burton On Trent - £60,000 - £65,000 + BenefitsAWS, Azure, CI/CD, Terraform, Git, Python, ARM, KubernetesRole OverviewWe are seeking a skilled DevOps Engineer to design, implement and maintain robust cloud infrastructure solutions across AWS and Azure platforms. This role plays a pivotal part in enabling continuous integration and delivery, ensuring system reliability, embedding security best practices, and actively contributing to team development through knowledge sharing.Key Responsibilities

Design, deploy and manage scalable, secure infrastructure in AWS and Azure

Build and maintain CI/CD pipelines using tools such as Azure DevOps

Implement and manage monitoring, alerting and logging systems (e.g. Datadog, Logic Monitor, SolarWinds)

Automate infrastructure provisioning using Infrastructure as Code (IaC) tools such as Terraform

Ensure compliance with security policies; manage IAM, PIM and RBAC access controls

Respond to incidents and contribute to root cause analysis and post-mortem reviews

Create and maintain comprehensive documentation and runbooks

Collaborate with cross-functional teams to align DevOps practices with wider project goals

Ensure adherence to regulatory standards including CQC, GDP, NMC, GPhC, and ICO relevant to the role

Remain fully informed of responsibilities relating to Infection Prevention and Control

Technical Skills & Experience

Cloud Platforms - Hands-on experience with AWS and Azure. Any relevant certifications (e.g. AWS Architect, AZ-104, AZ-305)

DevOps & CI/CD - Strong grasp of DevOps principles. Experience with Azure DevOps, GitHub Actions, Jenkins. AZ-400 certification desirable

Containerisation - Experience with AKS/EKS, Proficiency in AWS CloudFormation or ARM templates

Scripting & Automation - Proficient in PowerShell, Bash, or Python

Infrastructure as Code (IaC) - Hands-on experience with Terraform, Bicep, or ARM Certified: Terraform Associate preferred

Monitoring & Observability - Familiarity with tools like Azure Monitor, AWS CloudWatch, Prometheus, Grafana

Security & Compliance - Strong understanding of IAM, cloud security, compliance frameworks

Cloud Platform Expertise: Proven experience with AWS and Azure cloud platforms.AWS Certified Solutions Architect - Associate or Professional, Microsoft Certified: Azure Administrator Associate (AZ-104), or Microsoft Certified: Azure Solutions Architect Expert (AZ-305)

DevOps & CI/CD: Strong understanding of DevOps principles and hands-on experience with CI/CD tools like Azure DevOps, GitHub Actions, or Jenkins.

Azure Kubernetes Service: Proven experience designing and managing AKS clusters

Containerization: Docker, Kubernetes, Helm charts, and container orchestration

Azure DevOps: Advanced pipeline configuration for container builds and deployments

Additional certification: Microsoft Certified: Azure Kubernetes Service (AKS) Specialist or similar container-focused Azure cert

Azure Monitor for containers: Implement comprehensive monitoring for AKS workloads

Azure Key Vault integration: Secure secrets management for containerized applications

Azure Policy for Kubernetes: Implement governance and compliance for container workloads

Azure Arc: If relevant, managing hybrid/multi-cluster scenarios

Security & Compliance: Solid grasp of cloud security best practices, identity and access management, and compliance frameworks.

Collaboration & Mentorship: Excellent communication skills with a passion for mentoring, documentation, and enabling others through knowledge sharing.

For immediate consideration apply now!

Senior C#/Angular Developer - Commodities, Trading

+2

**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

Location: UK (Fully Remote) Salary: 60,000 - 100,000 (depending on experience) + benefits Type: Full-time We’re looking for a skilled DevOps Engineer to help build and maintain the infrastructure behind a suite of innovative data-driven products. This role is ideal for someone who thrives in a fast-paced environment and enjoys working with modern cloud-native technologies to deliver secure, scalable, and high-performing systems.You’ll be instrumental in shaping deployment pipelines, improving system reliability, and supporting both internal engineering teams and external users. Collaboration, problem-solving, and a proactive mindset are key to success in this role.What We’re Looking For Proven experience designing and managing cloud infrastructure at scale. Strong knowledge of container orchestration and infrastructure-as-code. Solid understanding of cloud networking and architecture (AWS, Azure, or GCP). Experience with CI/CD systems and automated deployment workflows. Familiarity with observability and performance monitoring tools. Experience with data pipelines and workflow orchestration. Excellent communication and documentation skills. Alignment with SRE principles and a passion for automation and reliability. Security-first approach to infrastructure and operations. Ideally degree-educated in a STEM discipline or a closely related field. This role is well-suited for someone who enjoys working in a fast-paced startup environment, where adaptability and initiative are highly valued.Tech Stack Languages & Frameworks: Java, Python, Next.js Infrastructure: Kubernetes, Terraform, Helm Cloud Platforms: AWS, Azure CI/CD Tools: GitHub Actions Monitoring & Logging: Grafana, Prometheus, Loki, Sentry Workflow Orchestration: Argo Workflows Version Control: GitKey Responsibilities Architect and manage cloud infrastructure to support scalable and secure application deployments. Develop and maintain CI/CD pipelines to streamline development and release processes. Monitor and optimize system performance using modern observability tools. Support and enhance data processing workflows using event-driven orchestration. Troubleshoot production issues and implement solutions to ensure system stability. Document infrastructure and promote best practices across teams. Embed security and compliance into infrastructure design and operations.Beneficial Experience with cloud security practices (IAM, container hardening, etc.). Familiarity with tools like Trivy, Semgrep, Checkov, or OWASP ZAP. Exposure to regulatory frameworks such as SOC2, ISO 27001, HIPAA, or GDPR. Adecco is acting as an Employment Agency. We are an equal opportunities employer.

+1

Ready for a new challenge?Please note, you must have active SC Clearance for this role.Are you looking for work that makes a difference? Do you want to work with people who learn and grow together?If so, Opencast could be the place for you. We’re a growing tech consultancy that creates user-centred solutions with purpose for our clients in government and business.What’s life like as a Devops consultant at Opencast?At Opencast, we love to keep things simple, and we love automation.It’s not the same as your standard Devops Consultant job. Depending on your client’s needs, you’ll take on a range of roles. These will include:· Taking the lead on responding to outages, triaging issues, balancing stakeholder priorities/concerns, and keeping communication channels open with all parties.· Developing, and implementing continuous deployment solutions that help our clients to deliver software faster and more efficiently.· Collaborating with our clients to understand their ways of working and will have an enthusiasm to learn new tools and technologies as needed.· Contributing within Opencast communities.We care about building things right. We believe in good devops practices and keeping things simple. We want to support you as much as we can on interiorising our approach to devops engineering and you supporting others.We are proud consultants who combine our own experience and approach with our company values.We are comfortable with new tech. We are empowered, cloud native, vendor agnostic devops engineers. We are empathetic, patient and care about quality.We know when to pick our battles and how to manage expectations. We are humble, inclusive team players that listen and collaborate, with zero egos!We’re always willing to teach and help others (inside or outside of our team). And we’re always willing to learn.It’s a varied job that keeps you super technical and excited.Salary:£50,000 - £60,000What our offer includes

A competitive pension, health cash plan, share options and discretionary bonus.

Flexible hours and 25 days’ holiday. Generous training budget.

People to support you every step of the way.

Where you’ll workYour working time at Opencast will be split between multiple locations, including from our HQ and hub locations, client site or home. Travel is part of life at Opencast, and takes in account requirements of your work, our clients and your team.We include youWe 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.InterviewJob interviews are on Microsoft Teams. We’ll make any adjustments to help you.Want to know more?Visit our website or email careers@opencastsoftware.com.We are not working with recruitment agencies on this vacancy. If you are interested in this position, please apply directly with Opencast.

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Yes, many employers on our platform offer remote positions or flexible work arrangements. You can filter job listings by location or remote options to find roles that suit your preferences.

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