Full-Stack Java Engineer (Mid-to-Senior) - Remote First | Full-Time or 4-Day Equivalent

PhixFlow; Remote; GBP 55,000 - 62,000; Full time

Job summary

A leading low-code platform provider in the UK is searching for a Full-Stack Engineer to innovate their platform. The role includes designing features for data integration with major systems like SAP and Salesforce, enhancing user experience, and integrating AI capabilities. Candidates should possess strong skills in Java, JavaScript, TypeScript, and SQL. This position offers a flexible work environment and a competitive salary range of £55,000 to £62,000 per year, reflecting the candidate's experience.

Benefits

Flexibility to work full-time or compressed hours

25 days annual leave plus bank holidays

Health insurance and pension contributions

Gym membership contribution

Training days for professional growth

Qualifications

• Experience working within large, enterprise-scale codebases is essential.
• Proficiency in server-side development with Java is required.
• Strong interest in front-end development with JavaScript and UX/UI principles is necessary.

Responsibilities

• Design and implement features for enterprise integration.
• Develop intuitive user experiences for business users.
• Research and develop AI features to enhance platform automation.

Skills

Proven experience within large enterprise-scale codebases

Solid proficiency in Java

Strong experience with JavaScript, TypeScript, and React

Expertise in SQL and relational database design

Understanding of clean code principles

Tools

Java

React

SQL

Job description

About PhixFlow

PhixFlow is an established (since 2004), highly respected company delivering a unique low-code platform for complex data integration and business process automation. The customers we partner with include major Telcos, Utilities, and Financial Services, to solve their most intricate business challenges. Despite our stability and history, we operate with the agility and technical freedom of a start-up.

The Challenge : Innovating Platform Reach, UX, and AI

We are looking for a highly capable Full-Stack Engineer who will serve as a core innovator driving the evolution of our PhixFlow platform across three critical areas :

1. Enterprise Integration : Designing and implementing features for seamless data exchange with mission-critical systems like SAP and Salesforce.
2. Intuitive UX / DX (Developer Experience) : Extending the platform's reach by designing and building highly intuitive user experiences for less technical business users.
3. AI Integration : Researching and developing new features that integrate AI capabilities into the platform to enhance automation and decision-making.

Your ability to learn quickly and reason through complex systems is critical, ensuring we balance innovation with performance, security, and usability.

Core Technical Skills Requested

• Proven experience working effectively within large, enterprise-scale codebases.
• Solid proficiency in Java (deep server-side development and platform architecture familiarity).
• Strong experience with JavaScript, TypeScript and React (front-end development, with an interest in UX / UI principles).
• Expertise in SQL and designing / optimising relational database schemas.
• We seek deep understanding of fundamental technical skills, including clean code principles and complex system design.

Culture, Compensation & Benefits

We understand that outstanding engineers require true work-life balance and flexibility. We are a remote-first company focused entirely on output and quality, not hours logged. We will consider candidates seeking flexible hours, reduced hours, or a compressed working pattern to fit around personal or family commitments.

• Working Pattern: Flexibility is Key : Available as Full-Time (5 days) or equivalent to a 4-day week (Salary adjusted pro-rata).
• Salary Range (Full-Time) : £55,000 to £62,000 per annum.
• Work Model : Remote-First.
• Development : 5 dedicated training days per year for professional growth.
• Time Off : 25 days plus bank holidays annual holiday, increasing for long service. Enhanced Maternity, Paternity and Adoption benefits.
• Health & Finance : Company Pension contribution and private health insurance, including Dental and Optical and option to add family members.
• Well-being : Active Wellbeing Committee and Gym membership contribution.
• Team Connection : Weekly virtual coffee chats, regular social events, including an annual Company Christmas Meal.
• In-Person : 4 team meetings per year in Cambridge, UK. Reasonable travel and accommodation costs can be fully expensed for those outside the Cambridge area.
• Equipment : All necessary equipment provided including Laptops, Screens, Chair and Sit-Stand desk.

Application & Interview Process

We aim for a streamlined and efficient hiring experience that respects your time.

1. Application: Submit your CV and a cover letter to [e-mail] explaining your relevant experience, both from paid work or other open-source projects you are involved with.
2. Online Assessment: Successful applicants will be invited to complete a short intellectual challenge (logic test) designed to evaluate reasoning and problem-solving aptitude.
3. Interviews: We conduct up to two virtual interviews focusing on technical depth, cultural fit, and your approach to complex challenges.

Determining Salary within the Range

Salary will be determined based on the successful candidate's proven experience, demonstrated technical expertise, and agreed working pattern. Offers will typically be structured as follows for Full-Time (5-day) work :

• £55,000 - £57,000 : For candidates who meet core skills and demonstrate strong learning aptitude, but require moderate ramp-up time on the platform.
• £58,000 - £62,000 : For highly experienced candidates who exceed the minimum requirements, have significant and demonstrated expertise in complex integration, and can immediately contribute to the innovation and architectural evolution of the PhixFlow platform.

Technology Keywords & Interests

Experience with, or a strong interest in, the following or similar technologies and concepts is highly valuable :

• Backend : Java, Spring, Hibernate, multi-threading / concurrency, Quarkus / Micronaut.
• Frontend : JavaScript, TypeScript, React, D3.js, SVG, CSS.
• Database : SQL (SQL Server, MySQL, Oracle), Data Modelling.
• Infrastructure : Cloud Platforms (Azure, AWS), Git.
• Advanced Topics : AI / LLM (Large Language Models), Small Language Models, Fine Tuning, Security, Design Patterns.