Full Stack Developer

FULL STACK DEVELOPER

Join us in shaping the future of telecare technology. As a Developer, you'll help transform critical services into secure, scalable cloud-native applications, powering life‑changing solutions for customers across the UK.

Shift pattern:
Monday – Friday 09:00‑17:00.

Start date:

August/September 2026.
Please note that this role is subject to pre‑employment screening, including Right to Work checks and two years of referencing. All screening must be completed prior to your start date, which may result in an adjusted start date.

This role is UK based; any hybrid/remote work must also be within the UK.

• Medical insurance – individual cover
• Discounts on groceries, shopping, holidays, insurance, restaurants and more
• 24/7 employee assistance programme with an accessible app
• Family and friends’ discounts on our services and products
• Pension scheme, up to 4% company matched
• Free on‑site parking

You’re a talented developer who enjoys building modern, scalable applications and solving complex technical challenges. You thrive in collaborative environments, take pride in writing high‑quality code, and are passionate about creating secure, reliable services that make a real difference.

• Strong experience with Node.js and Express, with a proven track record of developing and maintaining back‑end services and REST APIs.
• Experience building web applications using MVC architecture and modern development best practices.
• Hands‑on knowledge of cloud‑based technologies, including databases, caching solutions, and CI/CD delivery pipelines.
• Solid understanding of application security, including JWT authentication, secure API design, and data protection principles.
• Knowledge of SIP communications, including signalling, registration, and authentication processes.
• Experience designing resilient and scalable solutions, focusing on performance, fault tolerance, and high availability.
• Strong data management skills, including schema design, transactional updates, and working with MySQL, No
  
  SQL, Redis, or similar technologies.
• Excellent analytical and problem‑solving skills, with the ability to diagnose issues and deliver effective solutions.
• Strong communication skills, enabling you to work effectively with developers, architects, product owners, operations teams, and other stakeholders.
• Degree in Computer Science, Software Engineering, or equivalent practical experience, alongside relevant Node.js development expertise.

• Experience working in telecare, healthcare, or other safety‑critical environments.
• Knowledge of Free SWITCH, Asterisk, SIP platforms, or CPaaS solutions such as Twilio or Vonage.
• Experience with IoT technologies, MQTT, event‑driven architectures, or device integrations.
• Cloud certifications or experience with AWS, Azure, GCP, Kubernetes, ECS, or AKS.
• Knowledge of advanced security concepts such as PKCE, JWE, SRTP, mutual TLS, or secure RTP proxying.
• Experience mentoring and supporting other developers within high‑performing engineering teams.

As a Developer, you will play a key role in transforming Appello’s telecare platform, helping to migrate critical services from legacy on‑premise systems to secure, scalable cloud‑native solutions.

• Modernising legacy applications by designing and delivering cloud‑native services that are scalable, resilient, and highly available.
• Building and enhancing REST APIs that support telecare services, device management, alarm handling, and real‑time data processing.
• Developing modern web applications and refactoring existing codebases using current development standards and best practices.
• Supporting real‑time communication services, helping to deliver low‑latency, secure signalling and call control in a safety‑critical environment.
• Designing and managing data solutions, creating efficient data models and implementing caching, transactional processing, and state management.
• Championing security and compliance, ensuring secure authentication, role‑based access control, GDPR compliance, and robust data protection practices.
• Driving quality and reliability through automated testing, integration testing, performance validation, and continuous improvement.
• Improving observability and supportability with structured logging, monitoring, metrics, audit trails, and clear technical documentation.
• Collaborating closely with architects, product owners, operations teams, and fellow developers to deliver innovative solutions and share knowledge.

We are committed to equal opportunities and welcome applicants regardless of religious beliefs, political opinion, race, sex, marital status, age or disability. If you require assistance to participate in the recruitment process, for example due to disability, please contact the careers team on