Sr. Full Stack Software Engineer

Location: Remote (Candidates must actively reside in Ireland or the UK)

At Skillko HSI, we simplify training, compliance, and workforce management for organisations in regulated industries.

We're hiring a Senior Full Stack Software Engineer to design scalable systems, build modern applications, and mentor engineers across both the back and front end. You'll work closely with our Principal Engineer, leading development in Java, Spring Boot, and AWS, while creating intuitive UIs with modern JavaScript frameworks like AngularJS.

This is a hands-on technical lead role where you'll guide others in coding best practices, architecture, and performance—helping shape both our platform and our engineering culture as we scale.

What You'll Do

As a Senior Engineer, you'll serve as both a hands-on contributor and a technical coach, driving engineering excellence across the full stack.

• Leadership & Mentorship - Guide and support engineers across the stack, mentoring in Java and JavaScript best practices, code quality, performance, and modern architectural approaches.
• Full Stack Development - Take ownership of end-to-end feature delivery, building scalable backend services in Java, Spring Boot, and Hibernate, and dynamic front-end interfaces with modern JavaScript frameworks (AngularJS).
• Code Reviews & Coaching - Conduct detailed code reviews, providing constructive feedback to strengthen quality and maintain consistency across back-end and front-end codebases.
• Technical & Architectural Leadership - Define and champion engineering best practices, code quality standards, and scalable architecture principles while partnering with the Principal Engineer to evolve secure, maintainable, and high-performing systems.
• Production Support & Root Cause Analysis - Take ownership of critical issues, ensuring rapid triage, deep analysis, and sustainable resolutions.
• Cross-Functional Collaboration - Partner with Product, Design, and DevOps to deliver impactful features that drive customer success.
• Testing & Automation - Advocate for and implement strong automated testing, CI/CD, and observability practices.
• Continuous Improvement - Streamline workflows, enhance development efficiency, and evaluate emerging technologies for adoption.
• Security & Compliance - Embed secure coding principles and participate in reviews to ensure product and data integrity.

Our Tech Stack

We work with modern, proven technologies — and value adaptability and curiosity as much as experience.

• Backend: Java, Spring Boot, Hibernate
• Frontend: AngularJS / HTML / CSS
• Database: PostgreSQL (AWS RDS)
• Cloud & DevOps: AWS, Git, CI/CD pipelines
• Other: RESTful APIs, automated testing frameworks

Requirements

• 8+ years of software engineering experience, showing growth in scope, impact, and technical leadership
• 6+ years' experience in Java and Spring Boot (deep backend expertise required)
• 3+ years' experience developing front-end applications using modern JavaScript frameworks (e.g., Angular, React, or Vue)
• Proven ability to mentor engineers in both backend and front-end disciplines
• Experience designing and maintaining REST APIs and backend systems
• Hands-on experience with AWS (Elastic Beanstalk, EC2, RDS, S3, SQS, SNS preferred)
• Familiarity with CI/CD pipelines, Git, and automated testing
• Strong understanding of secure coding principles and application-level security
• Excellent communication and collaboration skills
• Experience working in Agile environments with a continuous improvement mindset

Benefits

• Meaningful impact - Help shape the core platform used by thousands of businesses in regulated industries.
• Technical ownership - We empower engineers to make decisions, innovate, and drive improvements across the stack.
• Collaborative, supportive culture - Join a tight-knit team that values curiosity, learning, and high-quality code.
• Career growth & development - Opportunities to advance your technical leadership skills and grow within a scaling, forward-thinking company.