Full Stack Developer mid-level and senior
SYNTONY (SEARCH & SELECTION) LIMITED · London, London
Full Stack Developer mid-level and senior at SYNTONY (SEARCH & SELECTION) LIMITED, based in London, London. This is a permanent role.
- Salary
- Competitive
- Location
- London, London
- Contract
- Permanent
- Posted
- 3 weeks ago
- Closes
- 11 Aug 2026
- Sector
- Software Developer
Reference http://syntony.co.uk/job/full-stack-developer-mid-level-and-senior-5/
About the role
Full Stack Developer
Home based with office HQ just outside London
Salary: £40-55,000 depending on the level of person
The client: A genuinely excellent work environment; an employee focused firm, that while now a well-established and highly successful company valued at £100m – it still has the feel of a young and vibrant start up software development business, with an informal work environment, a super office set up and a strong sense of community.
Our Client are an award winning employer and are the UK’s leading provider of hosted / cloud IVR, Speech Recognition, Contact Centre and PCI Payment solutions. They are the largest provider of such hosted services in the UK with the infrastructure and scalability to handle up to 8,000 calls simultaneously, which means that calls will always be answered no matter how unpredictable the circumstances. Their customers include a cinema chain, Transport for London, Comic Relief, O2 and the Ministry of Justice.
The Role
As a seasoned developer, you will produce high quality Object Orientated code with minimal defects, from inception to fruition, using your knowledge of software engineering principles and best practice.
You will be working on a range of complex projects across the portfolio of clients, that run on our Linux based voice & web platform.
Key responsibilities of the role include developing a range of projects, such as:
- Web service creation for consumption both internally and externally for voice, web & mobile channels
- Client & third party back end system integrations (REST / SOAP)
- Payment websites
- Complex multi-channel self-serve applications
- Internal and external customer facing tools (SPAs)
You will be expected to work autonomously at times, grasp concepts quickly and communicate ideas and questions clearly with the team and project stakeholders. You will need to demonstrate a desire for continual learning and improvement.
Our client use a variety of technologies to deliver solutions: PHP, JavaScript (Angular & Node.js), databases, Rabbit MQ, Voice XML (VXML) & call control XML (CCXML)
Required technical skills
- 3+ years commercial experience of Object Oriented programming (PHP/JavaScript)
- Familiarity with one or more Frameworks (Express, Zend, Symfony, Laravel, Angular etc.)
- TDD/BDD
- Comfortable with version control (preferably GIT / Github)
- Familiarity with the Linux command line (bash)
- Knowledge of designs patterns, SOLID, DRY, DI, etc
Advantageous knowledge & experience of one or more of the following:
- Solution / architecture design
- Web application security
- Docker
- DevOps
- Test automation
- SRE
- ML / AI
- Encryption
- BigData
- Metrics
- Analytics
- PaaS
- HTML5, CSS SASS/LESS
- PCI-DSS
- IVR / Voice XML / CCXML
Syntony is an employment agency working on behalf of client organisations to recruit personnel. In submitting your application you are giving us permission to retain and process your personal details and to contact you via the phone and email details you provide. You can amend this consent at any time by email to [email removed]. For more information: syntony.co.uk/gdpr
Reference: http://syntony.co.uk/job/full-stack-developer-mid-level-and-senior-5/ · Posted 3 weeks ago · Closes 11 Aug 2026 · Listed via SYNTONY (SEARCH & SELECTION) LIMITED
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