Node Developer

Solirius Reply; Greater London; Hybrid; GBP 60,000 - 90,000; Full time

Benefits offered by this job

Competitive Salary

Bonus Scheme

Private Healthcare

25 Days Annual Leave

Training Budget

Parental Leave

Fertility Leave

Pension

Employee Assistance Program

Gym Membership

Flexible Working

Away Days

Job summary

Solirius Reply is seeking an experienced Node.js Developer in the Greater London area to join a collaborative team delivering complex backend and API solutions. You will work across the stack, pairing with frontend engineers to build scalable services and robust data solutions.

The role emphasizes modern JavaScript, TypeScript, RESTful APIs, database design, and cloud adoption, with Agile delivery and continuous improvement through code reviews and testing.

Qualifications

• Proven experience in Node.js development.
• Strong knowledge of JavaScript (ES6+), asynchronous programming, and event-driven architecture.
• Experience with building and maintaining RESTful APIs.
• Solid understanding of SQL and NoSQL databases (MongoDB, PostgreSQL, MySQL).
• Familiarity with authentication and authorisation mechanisms (OAuth, JWT).
• Experience with version control systems like Git and GitHub/GitLab.
• Familiarity with containerization technologies such as Docker.
• Strong understanding of web performance, security best practices, and error handling.
• Ability to write clean, efficient, and scalable code.
• Familiarity with CI/CD pipelines and DevOps practices is a plus.
• Experience with TypeScript
• Familiarity with GraphQL or other modern data-fetching technologies.
• Experience in integrating message brokers (RabbitMQ, Kafka).
• Familiarity with cloud platforms like AWS, Azure, or Google Cloud.
• Knowledge of microservices architecture and related tools.
• Experience with testing frameworks like Mocha, Chai, or Jest.
• Familiarity with front-end technologies like React, Vue, or Angular is a plus.
• Experience with back-end technologies like Java or .Net is a plus.

Responsibilities

• Back‑End Development: Design, develop, and maintain server‑side applications and APIs using Node.js, ensuring performance, scalability, and security
• API Integration: Work with RESTful APIs and third‑party services to integrate and enhance system functionality
• Database Management: Develop and maintain database architectures (MongoDB, PostgreSQL, MySQL) for robust data storage solutions
• Code Optimization: Write clean, modular, and reusable code, adhering to best practices and design patterns
• Testing and Debugging: Conduct unit and integration testing, debug issues, and ensure high‑quality, reliable, and maintainable code
• Collaboration: Collaborate with front‑end developers to integrate front‑end components with server‑side logic and maintain smooth user experiences
• Continuous Learning: Stay updated on the latest trends in Node.js and related technologies, applying new knowledge to improve system performance and code quality
• Agile Methodology: Participate in Agile development cycles, contributing to sprint planning, code reviews, and continuous delivery

Skills

Node.js

JavaScript ES6+

REST APIs

SQL/NoSQL

OAuth/JWT

Git

Docker

TypeScript

GraphQL

Cloud (AWS/Azure/GCP)

Testing (Mocha/Chai/Jest)

CI/CD

React/Front-end

Tools

Docker

GitHub/GitLab

GraphQL

Job description

About Us

Solirius Reply, part of the Reply Group, delivers technical consultancy and application delivery to our clients in order to solve real world problems and allow our clients to respond to an ever-changing technical landscape. We partner closely with our clients, embedding our consultants into their businesses in order to provide a bespoke service, allowing us to truly understand our clients' needs. It is this close collaboration with our clients that has enabled us to grow rapidly in recent years and will drive our ambitious future growth plans. We currently have over 300 consultants working with a variety of key clients from both the public and private sectors such as the Ministry of Justice, Department for Education, FCDOS, UEFA, International Olympic Committee and Mercedes Benz; with plans to increase our client base further in the near future. We operate as a flat organisation and believe in trusting and supporting our team to operate independently. We pride ourselves on being specialists at what we do, making the most of our consultants' expertise in their fields in order to provide a best-in-class service to our clients. All our consultants have the opportunity to work on a range of different projects, providing a broad range of knowledge on which to develop their careers and progress in the direction they choose.

About You

You are a motivated and adaptable professional with a strong analytical mindset and a passion for using technology to solve real-world problems. You enjoy working in collaborative, agile teams and take pride in delivering high‑quality solutions that make a tangible impact. With strong communication skills and a consultative approach, you're comfortable engaging with clients, understanding their needs, and translating them into effective outcomes. You understand and align with Solirius Reply Values.

The Role

We are looking for an experienced Node Developer with Java or Front End Development experience to join our team here at Solirius. You will be working as part of a team, developing and delivering exciting projects with a fantastic team of technology experts. You will be a fundamental part of the team and will be an expert in your field/specialism.

Key Responsibilities

• Back‑End Development: Design, develop, and maintain server‑side applications and APIs using Node.js, ensuring performance, scalability, and security
• API Integration: Work with RESTful APIs and third‑party services to integrate and enhance system functionality
• Database Management: Develop and maintain database architectures (e.g., MongoDB, PostgreSQL, MySQL) for robust data storage solutions
• Code Optimization: Write clean, modular, and reusable code, adhering to best practices and design patterns
• Testing and Debugging: Conduct unit and integration testing, debug issues, and ensure high‑quality, reliable, and maintainable code
• Collaboration: Collaborate with front‑end developers to integrate front‑end components with server‑side logic and maintain smooth user experiences
• Continuous Learning: Stay updated on the latest trends in Node.js and related technologies, applying new knowledge to improve system performance and code quality
• Agile Methodology: Participate in Agile development cycles, contributing to sprint planning, code reviews, and continuous delivery

Key Skills/Experience

• Proven experience in Node.js development
• Strong knowledge of JavaScript (ES6+), asynchronous programming, and event‑driven architecture
• Experience with building and maintaining RESTful APIs
• Solid understanding of SQL and NoSQL databases (e.g., MongoDB, PostgreSQL, MySQL)
• Familiarity with authentication and authorisation mechanisms (OAuth, JWT, etc.)
• Experience with version control systems like Git and GitHub/GitLab
• Familiarity with containerization technologies such as Docker
• Strong understanding of web performance, security best practices, and error handling
• Ability to write clean, efficient, and scalable code
• Familiarity with CI/CD pipelines and DevOps practices is a plus
• Experience with TypeScript
• Familiarity with GraphQL or other modern data‑fetching technologies
• Experience in integrating message brokers (e.g., RabbitMQ, Kafka)
• Familiarity with cloud platforms like AWS, Azure, or Google Cloud
• Knowledge of microservices architecture and related tools
• Experience with testing frameworks like Mocha, Chai, or Jest
• Familiarity with front‑end technologies like React, Vue, or Angular is a plus
• Experience with back‑end technologies like Java or .Net is a plus

Benefits

• Competitive Salary
• Bonus Scheme
• Private Healthcare Insurance
• 25 Days Annual Leave + Bank Holidays
• Up to 10 days allocated for development training per year
• Enhanced Parental Leave
• Paid Fertility Leave (5 Days)
• Statutory & Contributory Pension
• EAP with Help@Hand
• Gym Membership Benefits
• Flexible Working
• Annual Away Days/Company Socials

Equality & Diversity

Solirius Consulting is an equal opportunities employer. We are committed to creating a work environment that supports, celebrates, encourages, and respects all individuals and in which all processes are based on merit, competence and business needs. We do not discriminate on the basis of race, religion, gender, sexuality, age, disability, ethnicity, marital status or any other protected characteristics. Should you require further assistance or require any reasonable adjustments be put in place to better support your application process, please do not hesitate to raise this with us.