Mobile App Developer (UK) NEW

Sign Language Interactions Ltd
Role Summary

We are seeking a skilled and innovative Mobile App Developer to join our dynamic technology team. In this role, you will be responsible for designing, developing, and maintaining high quality mobile applications that support Sorenson’s mission of accessible communication solutions. You will collaborate closely with cross functional teams to deliver user centric, scalable, and secure apps for both iOS and Android platforms. This role requires a strong foundation in mobile development frameworks, a keen eye for UI/UX, and a commitment to building innovative solutions that support the Deaf and hard of hearing community.

Job Title: Mobile App Developer

Hours/Contract: 37.5 hours per week / Full Time / Permanent

Reports to: Head of Product

Job Start: ASAP

Application Closing Date: 22/05/2026

Candidates must be eligible to work in the UK. We will not be able to provide visa sponsorship for this position.

Essential Duties and Responsibilities

• Provide technical and team leadership in the design, implementation, and testing of high-performance, high-quality video communication applications for Android and iOS operating systems.
• Deliver innovative solutions that increase application performance, usability, and fit for our target customers.
• Knowledge of UX/UI design is essential and usage of Android and iOS design packages is a requirement.
• Implement standards-based communication protocols and related technologies including XML, JSON, HTTP, and REST.
• Provide attainable goals and time frames.
• Drive standards-based architectures and supporting services.
• Use of agile and rapid application development processes to speed engineering efforts.
• Follow engineering best practices in a team environment to develop high-quality products including writing automated unit, component and feature level testing.
• Contribute to the overall enterprise architecture and the development of product features.

Travel Requirements

• Less than 25% to Glasgow.

Education

• Minimum of a 4 Year / Bachelor’s Degree in CS, EE, or with excellent grades or equivalent experience.

Experience

• 4+ years of experience developing state-of-the-art mobile applications.

Knowledge, Skills, and Abilities

• Strong knowledge of native development for Android and iOS, including UX/UI.
• Strong understanding of software algorithms, structures, and patterns.
• Excellent object-oriented design and analysis skills.
• Experience developing high-quality, multi-threaded applications.
• Must possess good communication skills and be eager to work in a team environment with other dedicated engineers.
• Positive attitude and team player.
• Able to work collaboratively with colleagues across departments to achieve shared objectives.
• Competent in C++.
• Experience with text, voice, or video communication applications.
• Experience with conferencing protocols such as WebRTC and SIP.
• Familiarity with IP networking and telephony experience is a big plus.
• Experience with video encoding/decoding.

We can offer you:

• Vitality Private Health Insurance.
• 32 days Annual Leave (Including Bank holiday), increasing to 33 days after 2 years.
• Cycle Scheme.
• British Sign Language Level 1, 2 & 3.
• Personal VRS & VRI Package.
• Life Relevancy Plan.
• Company Sick Pay.
• We Care Service (paid time to volunteer).