Roles | Haystack

Make yourself visible and let companies apply to you.

👉 Get started

Roles

Explore roles

Filters applied

None

Search

Salary

Location

Remote preference

Role type

Seniority

Tech stack

Sectors

Contract type

Company size

Visa sponsorship

Senior Front-End Developer

London Bridge St, London SE1 9SG

What will you do Create extremely well-crafted front-end web applications using React.js (with Hooks), ReduxBuild reusable cross-platform components and front-end libraries for future use- Write resilient code that will be continuously tested, deployed, and performed at scale Be part of a self-organizing and cross-functional Agile team- Support in leading within the team, actively improving overall software quality whilst also helping fellow team members Contribute to the team’s technical direction and the improvement of its tools and processes as well as technical interviews What you’ll have At least 2 years experience working with React.jsGood understanding of Browser Rendering BehaviorAdvanced Level of JavaScript (ES6+) - Experience with any state management approach- Unit, Integration, e2e tests- REST API experience CSS Framework experienceStyling experience (Styled Components, JSS, CSS Modules, etc.)Experience and understanding of Agile software development principles Nice to have Experience with HooksExperience with HLS or other streaming technologiesTypeScriptPerformance optimizationGraphQLSome experience with build tools and task runnersReact NativeExperience with cloud (AWS)Experience with building in Web widgets or ExtensionsFamiliar with react-spring or any animation libraries

Software Engineer

E-Zest Solutions

71-75 Shelton St, London WC2H 9JQ

Data Pipeline ETL ELT Data Lake CI CD We are looking for a Software Engineer with 6+ years of experience ResponsibilitiesAbility to evaluate business requirements and map to the technical stories & tasksShould possess good communication skills and be able to articulate thoughts clearly to business and teamShould be detail oriented with an analytical mind setRequirementsSoftware Engineer with extensive experience of developing data pipelines using core PythonIn-depth knowledge of Business Intelligence concepts like Data Lake, Data Warehouse, Data Mart, etc.Experience of working on multiple Data Platforms like Teradata, SnowflakeExtensive exposure to ELT ETL with good level SQL skills is requiredExperience of working with at least one of the ETL tool like AWS Glue, Fivetran, Matillion, etc.Good to have experience with Apache AirflowShould have strong Test Process orientation and familiarity with use case identificationShould have hands-on experience in Agile, Jira, and Test management toolsGood to have exposure of developing an automation framework to validate dataGood understanding of CI CD processGood exposure to AWS Services like AWS Lambda, AWS Glue, S3, IAM, Cloudwatch, SQS, etc.

PHP Developer Jobs

Key Skills & Experience2+ Years commercial experience in PHPMySQLREST Developing for APIsUnit TestingAdvantageous skillsNodeJSREACTLaravelJavaScriptLAMPDevOpsLumen

Weavers Court, Linfield Rd, Belfast BT12 5GH

RESPONSIBILITIES:– Development of highly scalable software solutions in an AWS environment – Agile requirements specifications, component designs and interface specifications – Test-driven development, component testing and participating in system and integration testing – Contributing to peer reviews of designs, code and test specifications – Continuous professional development, innovation and improvement.ESSENTIAL CRITERIA:– Degree in a relevant discipline (or alternatively possessing broader experience than required below) – At least 4 years software development experience – Proficient in at least one modern coding language – AWS certified Developer Associate certification – Experience of development in a Linux Unix environment – Full software lifecycle in agile development technologiesDESIRABLE CRITERIA:– AWS certified DevOps Engineer Professional certification – Experience in the use of development frameworks and associated tooling – Experience of containerization

Devops Engineer

Weavers Court, Linfield Rd, Belfast BT12 5GH

RESPONSIBILITIES:– Design and build secure cloud infrastructure using infrastructure automation – Design, build and maintain CI CD systems using tools such as Jenkins, Ansible and Azure DevOps – Work with agile development processes and take ownership for certain aspects of the CI CD processes by putting appropriate methods and tools in place – Implement monitoring, log analysis and reporting systems – Work with Product Owners and other key Stakeholders to create project Backlog – Build platforms as part of a productESSENTIAL CRITERIA:– Degree in a relevant discipline (or alternatively possessing broader experience than required below) – 2 year’s experience in a DevOps role or a developer role involving significant DevOps responsibilities – Experienced in DevOps tooling – Agile tooling (Jira), Collaboration (Confluence & MS Teams) – Experienced in at least one of the main cloud technologies – AWS, Azure, RedHat, GCP, IBM Cloud – Strong working knowledge of Linux, Windows and OSXDESIRABLE CRITERIA:– Other Cloud technology experience – Oracle knowledge and experience – SQL – DevOps Certification – Agile (SAFe and SCRUM)

AWS Operations Engineer

Weavers Court, Linfield Rd, Belfast BT12 5GH

RESPONSIBILITIES:– Assist and advise on cloud migration activities – Support distributed agile development teams – Mentoring junior staff – Continuous professional development, innovation and improvement.ESSENTIAL CRITERIA:– Degree in a relevant discipline (or alternatively possessing broader experience than required below) – At least 4 years experience – AWS certified SysOps Administrator Associate – Experience of development in a Linux Unix environmentDESIRABLE CRITERIA:– AWS certified DevOps engineer Professional – Security Certifiications – Solid understanding of highly available, highly performant, distributed architectures

Software Developer

Key ResponsibilitiesBuild, deliver, and maintain high quality software (requirements, design, code, documentation, etc.) Continuously strive to make improvements to the existing products and or systems and services Maintain relevant documentation to describe logic, coding configuration, testing and changes where applicable Work cross-functionally with various Sage teams: the ability to speak to both technical and non-technical team members is very important in this position Proven development experience in an Agile environment Update job knowledge by studying state-of-the-art development tools & techniques (code-agnostic developers are highly preferred) Provide 3rd tier support and or expertise for the area of responsibility Willingness to learn Ruby is required TECH STACK (not required): Python, Ruby, JavaScript, Java AWS Linux Environment New Relic Docker Terraform

Backend Engineer

Responsibilities:

-Develop highly-scalable mobile internet backends for millions of users

-Work with Product Owners and other development team members to determine new features and user stories needed in new / revised applications or large/complex development projects

-Participate in code reviews with peers and managers to ensure that each increment adheres to original vision as described in the user story and all standard resource libraries and architecture patterns as appropriate

-Respond to support calls for applications in production for quick diagnosis and repair to keep things running smoothly for users

-Participate in all team ceremonies including planning, grooming, product demonstration and team retrospectives

-Mentoring less experienced team members

-Potential On-Call responsibilities depending on team and tenure

-Preferred experience in Spring Boot, Spring Cloud, Spring Data and iBATIS

-Strong experience with highly-scalable web backends

-Experience designing highly transactional systems

-Advanced proficiency in Object Oriented Design (OOD) and analysis

-Advanced proficiency in application of analysis / design engineering functions

-Advanced proficiency in application of non-functional software qualities such as resiliency and maintainability

-Advanced proficiency in modern behavior-driven testing techniques

-Deep understanding of Microservices

-Proficient in SQL

-Expert knowledge of application development with technologies like RabbitMQ, MySQL, Redis etc

-Strong experience with container and cloud solutions such as Docker, Kubernetes and AWS Cloud

-An ability to work independently

-Excellent communication skills

Responsibilities

Delivering clear analysis and reporting of core business metrics to shareholders

Creation and management of reports and dashboards

Monitoring the performance of key business products

Providing actionable insight to drive growth of core products

Extraction and analysis of large data sets from MySQL / Oracle DBs

Data management - Enhance and optimise existing reporting processes

Ad hoc analysis and reporting to clients and shareholders

Mentoring less experienced team members

Aid in reconfiguring existing architecture and database structure to address our shareholder’s evolving needs

Daily maintenance and monitoring of all BI related databases, including proficient handling of emergencies

Performance tuning for current and newly added queries to the databases, ensuring the database resources are fully utilized

Conduct independent research on new and advanced technology to fulfill our scalability needs

2+ years experience in a similar data-driven role

Excellent working knowledge of SQL (preferable) or Oracle or Python

Familiarity with a range of BI and data visualisation tools ie PowerBI

Understanding of basic principles of rational databases

Strong understanding of sports and gaming will be beneficial

Proactive and self-driven with excellent analytical skills

Ability to thrive in a fast paced and dynamic environment

Great communication skills

DevOps Director

Responsibilities

• Manage a global DevOps team and mentor team members on new technologies in your area of expertise • Improve existing infrastructure and CI/CD procedure • Holistically improve all aspects of our infrastructure, including reducing costs, improving build and deployment times, streamlining environment provisioning, lowering load times, incorporating the latest techniques and technologies, and more • Monitor and maintain the existing cloud infrastructure via autoscaling, automated alerts • Take ownership and responsibility for our cloud operation activities • Liaise with external security agencies for annual audits as well as perform our own internal security sweeps • Aid in reconfiguring existing architecture to allow for rapid deployments to new countries

Basic: • Fluent in written and spoken English • A natural disposition to mentor and guide team members • Rich experience with large-scale, AWS-hosted, microservice systems • A creative approach to problem solving and crafting simplified solutions • Proven experience on Kubernetes, AWS and Web technology

Plus: • Bachelor or Masters degree in a related subject would be beneficial • Experience forming and leading teams is beneficial • Understanding of Java/Spring, Android, and Vue.Js deployment pipelines is a plus

Frontend Engineer

Responsibilities

Develop mobile-first frontends in VueJS

Focus on performance and user experience

Create frontends for the backend management systems

Participate in code reviews with peers and managers to ensure that each increment adheres to original vision as described in the user story and all standard resource libraries and architecture patterns as appropriate

Participate in team ceremonies including planning, grooming, product demonstrations, and team retrospectives

Mentoring less experienced team members

Familiarity with at least one: Vue, React, Angular

Familiarity with Git, ES6, Webpack, Less or Sass, and NodeJS

Familiarity with state management like Vuex, Redux, Ngrx

Excellent communication skills

Knowledge of backend stack is a plus

QA Manual Engineer

We don’t necessarily expect you to have experience with all our requirements, we do want to see as many as possible!

2+ years of testing experience

Familiarity with Web / Android / iOS manual testing

Familiarity with various tests (function / integration / regression / stress / API)

Familiarity with the test tool (Postman / Chrome console)

Familiarity with MS SQL / MySQL is advantageous

Familiarity with Jira / Jenkins is advantageous

WordPress Developer

Gooey are looking for a Front End / WordPress developer to work within our development team, delivering WordPress websites for some of the UK’s leading agencies and brands.

You will be an experienced Front End Developer looking to take the next step in your career, working at an agency that prides itself on their clean, semantic and functional code.

We are an agency for agencies, so our team is highly-skilled and set up to work as an extension of external agency teams. All our developers are front-end and WordPress experts, we work efficiently and to high standards, as an agency we produce circa 300-400 websites per year. The websites we build are mostly quick turnaround, averaging about 5-15 days development, so we never get stuck on long drawn-out website builds, instead working on new and exciting projects on a nearly weekly basis.

All of our WordPress builds are custom themes using plugins like ACF, Gravity Forms and Yoast SEO (among others). We use tools like Gulp and Git to streamline our process and we use things like AOS to make our builds super speak.

The office is laid back and the developers are not micro-managed, they are trusted to stay on schedule and hit deadlines, no matter where they code – whether it be at their desk, on the couch or sat at home.

Skills & Experience

Strong WordPress theme development experience. JavaScript experience (jQuery). Knowledge and use of SASS/SCSS. Knowledge and use of Gulp. Experience of working either agency- or client-side as a WordPress Developer. Experience with ACF Pro, Gravity Forms or Contact Form 7. Benefits

Fantastic salary based DOE. 28 days holidays Flexi-time Regular social events Pension scheme Office PS4, Xbox, pool table, table tennis, air hockey and our own bar.

Security Engineer

This is an exciting opportunity for a software security engineer passionate about open source software and Ubuntu. Come build a rewarding, meaningful career working with the best and brightest people in technology at Canonical, the growing international software company behind Ubuntu.

What you’ll do: • Follow security-related mailing lists and other sources of information about emerging vulnerabilities, and promptly assess their impact on Ubuntu • Keep track of vulnerabilities in Ubuntu releases as they are discovered, researched and fixed (using internal software tools) • Analyze, fix, and test vulnerabilities in Ubuntu packages • Collaborate with other teams in the Ubuntu community and with upstream developers where appropriate, to exchange or develop vulnerability patches and make sure that Ubuntu includes the very best security features • Participate in the development of proactive security features in Ubuntu • Occasionally audit source code for vulnerabilities • Provide guidance and assist with projects across Ubuntu and Canonical to ensure secure coding practices are followed • Resolve issues raised by end users and commercial support customers

Who you are: • You have a strong grasp of Linux security technologies • You have a thorough understanding of the common categories of security vulnerabilities and techniques for fixing them • You are familiar with coordinated disclosure practices • You are familiar with open source development tools and methodologies • You have a strong technical knowledge of Ubuntu, with the capacity to learn about new systems and techniques quickly • You are skilled in C, Python, and other programming languages • You can develop automated regression tests, preferably with PyUnit • You have excellent logic, problem-solving, troubleshooting, and decision-making skills • You can clearly and effectively communicate with the team and Ubuntu community members • You have excellent online communications skills, including IRC, email, and other online venues • You can communicate security information in a positive and collaborative manner • You can be productive in a globally distributed team through self-discipline and self-motivation • You have 2+ years security experience, open source security experience preferred

Senior Observability Platform Developer

Canonical seeks an experienced developer with a proven track record in Python and/or Go. As part of the Observability team, you will develop a cloud-native monitoring stack that composes best-in-class open-source monitoring tools.

What you’ll do: • Collaborate proactively with a globally distributed team • Write, test and document high quality code to create new features • Debug issues and interact with a vibrant community • Review code produced by other engineers • Attend conferences to represent Canonical and the Charmed Observability Stack • Work from home with global travel 2 to 4 weeks for internal and external events

Who you are: • You love technology, observability and working with brilliant people • You value soft skills and are passionate, enterprising, thoughtful, and self-motivated • You have a Bachelor’s or equivalent in Computer Science, STEM or similar degree • You have a proven understanding of the importance of observability and monitoring for keeping software running smoothly • You have strong working knowledge of modern monitoring technologies like Prometheus, Alertmanager, Grafana, Loki, Mimir, etc., and how they fit together • You are a skilled Python developer, preferably with a track record in open source • You have a working knowledge of Go • You have proven, hands-on experience deploying, configuring and using Kubernetes • You are comfortable contributing to open source codebases maintained by other companies, you have a history of driving consensus in groups of multiple stakeholders with different interests and getting the resulting work delivered • You have experience with infrastructure-as-code and configuration management tools • You have interest and experience with two or more of the following: Ubuntu Linux, container images, Debian packaging, snap, distributed systems.

Software Engineer - Backend

Aforza is looking for a mid-level Software Engineer to join our Cloud Platforms engineering team, where you will be working with a friendly team of highly talented engineers building out Aforza’s industry-leading cloud solutions. In this role, you’ll be working on building the backend for our brand-new Digital Asset Management (DAM) product. You will be involved in the entire development lifecycle, from design and analysis to development and testing of new features. What You’ll Do:Develop new backend features on Aforza’s Digital Asset Management (DAM) platformDevelop APIs in Node.js TypeScriptAdd features to a background data processing pipelineWrite unit tests using JestPerform code reviews on the team’s pull requestsTake part in all aspects of SCRUM, including sprint planning, reviews, retros and backlog estimationWhat We’re Looking For:Experience with object-oriented programming in languages such as Java or C#Backend API development experience in Node.js and be comfortable with modern JavaScript TypeScriptExperience with SQL and NoSQL databasesExperience structuring and developing REST APIsGood understanding of unit testing frameworksSome understanding of Docker Kubernetes would be an advantage

Senior React Engineer

Newcastle upon Tyne

Advert People make Sage great. From our colleagues delivering ground-breaking solutions to the customers who use them: people have helped us grow for more than thirty years, and people are driving our future as a great SaaS company. We’re writing our next chapter. Be part of it! At Sage, we recognize that the world of work has rapidly shifted over the last few years, particularly how we work. That is why we have committed to working in a hybrid way going forward. Human connection is an essential ingredient of the 4 principles that make up our Flexible Human Work hybrid framework and we want to be transparent in what that looks like when you join our Sage family. On one hand, our offices will continue to play an important role in our future and serve as a place for spontaneous conversations, connection, collaboration as well as focused time. On the other hand, we have learned to reimagine where and when we work and to unlock that flexibility and innovation for our colleagues offering them the opportunity to work flex across their home, Sage offices or customer sites. We invite you to join us and help us write our next chapter. Follow us on our social media sites to join in conversations about open positions and company news! #lifeatsage #sagecareers. If you would like support with your application (or require any adjustments) please contact us at careers@sage.com for assistance. All qualified applicants will be thoughtfully considered and never discriminated against based on their race, color, age, religion, sexual orientation, gender identity, national origin, disability or veteran status. Job Description Do you want to work at the leading edge of Javascript technologies? Do you have the drive to build great products for a world class organisation? Carbon (https: carbon.sage.com) is Sage’s open source library of React components for building great web applications, and is the front-end technology of choice for Sage’s Cloud Native and Cloud Connected products worldwide - have a look at https: www.sage.com en-gb sage-business-cloud accounting for an example. We’re looking for a Senior Software Engineer with excellent Javascript and React skills to help deliver and drive the roadmap for Carbon, building new, and improving existing, components that are needed for our products for the benefit of Sage and it’s customers. The successful candidate will be a leading member of the existing agile team. This is an exciting and challenging role with a high degree of visibility within Sage. You would have a high profile position within the team and be able to influence the direction of the team, as well as help innovate and plan adoption of new tools and technologies. Key Responsibilities Essential personal specification: Commercial Javascript experience Commercial React experience A deep understanding of Typescript, CSS-in-JS and state management A deep understanding of testing web applications - understanding of Jest, Cypress A product-based focus - understanding how changes and updates affect our consumers A great team player, communicator and contributor A mentor and leader for team members, leading skills development and knowledge sharing Driving technical innovation. Your first 12 months will look something like this: Setup and start developing on your new MacBook Work with and improve our very own component library (Carbon), built on ReactJS: https: carbon.sage.com Enjoy the freedom to work on projects you choose on the last Friday of each month. Innovating or improving existing code or processes. It’s up to you! Continue your self-development via dedicated learning days & attending conferences meetups LI-BW1

Senior Data Engineer

We are currently hiring a Principal Data Engineer to help us build machine learning solutions that will provide insights to empower businesses and help them succeed. As a part of our cross-functional team including data scientists and engineers you will help steer the direction of the entire company’s Data Science and Machine Learning effort. If you share our excitement for machine learning, value a culture of continuous improvement and learning and are excited about working with cutting edge technologies, apply today! You have: 4+ years of relevant practical experience working on data integration, data modelling and metadata management Database experience - you know how to write and optimize SQL queries, design efficient schemas for OLAP and OLTP and understand differences and tradeoffs between them Expert knowledge and experience with several relevant languages, tools and frameworks: e.g. Python, SQL, Scala, Spark, Beam, Hadoop, Kafka, RabitMQ, Athena, Amazon EMR etc Excellent written and verbal communication skills, and ability to evaluate and explain technical details clearly Experience in building large scale ETL/ELT processes, datalakes and data warehouses Willingness to adapt to significant changes in either technology or environment Previous experience working with financial data is a plusKey Responsibilities You will: Work closely with our Data Scientists and ML engineers to build data warehouses and pipelines Collaborate with our AI Infrastructure team to extend the capabilities of our machine learning platform Monitor and optimize the quality and performance of our data pipelines and tools Collaborate with other teams to integrate new data sources, ensuring privacy and security protocols are followed Collaborate with data scientists and ML engineers to design and build data analytics tools for detecting data anomalies and ensuring data quality

Newcastle upon Tyne

The Developer will design, develop, and deliver high quality functionality and services that exceed customers’, internal stakeholders’ and business partners’ expectations and will proactively share their own knowledge for specific technical solutions and business processes in their area of responsibility. Key Responsibilities/Skills: Proven experience in software development on various platforms, in particular Java and Kotlin. Experience with AWS or similar cloud-based platforms (Dynamo DB, SQS, SNS, API Gateway). Knowledge of design and integration patterns and how to best to apply them with in a microservices architecture. API First design approach creating Open API specifications. Experience with microservices, REST/JSON API endpoints Automate unit and integration tests using JUnit and pact.io Collaborate on code using Git and GitHub Knowledge of Docker, Kubernetes and Terraform would be useful (but not essential)

Front-End/Shopify Developer

We’re looking for a Front End Web Developer to join our team. As both Shopify Plus and Google Partners, we build all kinds of eCommerce stores, APIs and Web Apps for our clients. We need someone who knows their way round HTML5 and CSS via SASS, and who understands the demands of designing and building for mobile. You’ll be familiar with version control and using Git.‘Must Have’ SkillsThe ideal candidate for this role will have experience (preferably with Shopify) within a digital or ecommerce agency - although, well-crafted front end experiences are at the top of our wish list.‘Nice-to-have’ SkillsExperience with Liquid template language would be great. Any knowledge of front-end Javascript frameworks would be a real bonus (Vue), as would someone who can find their way around PHP Frameworks (specifically Laravel). An eye for design and creativity would be nice and if you can ensure your assets are fully optimised and load-time is kept to a minimum, well, that’s all our boxes ticked…Location, Location, Location?If you happen to be in Manchester or Hull, we’ve some office space we’d love to see you in.Not close to one of our office locations? No problem. We’re 100% remote friendly and don’t let geography get in the way of talent and the development of our team. Benefits of being a StrawberryA normal working week will be 37.5 hours but we work flexibly. That means as long as work is getting done, we’re pretty relaxed about where and when you work. Holidays are 25 days plus statutory UK Bank Holidays and salary is based on your level of experience.- Flexible work hours- Learning & development budget- Company pension- Vitality health scheme- Generous holidays- Extra days for Christmas shutdown- Team lunches, drinks & events (when the world allows!)Like the sound of working with us? Then we’d love to hear about you!We are an equal opportunity employer. We do not discriminate on the basis of race, religion, colour, national origin, gender, sexual orientation, age, marital status, or disability status.

Page 20 of 21

© 2025 HAYSTACK APP LTD

Privacy policy & Cookies

Feedback

Contact