Top javascript developer Work, Jobs (with Salaries)

Lead Developer (Mobile)
Post Office Ltd —London
- Full-time
- Java
- SQL
- AWS
- Annual leave
- Employee assistance programme
Software Engineer
Upscope —London
- Computer Science
- Engineering
- SQL
- Gym membership
Quality Assurance Engineer
vServices —London
- SQL
- Analysis skills
- Bachelor's degree
Software Test Analyst
Wren —Barton-upon-Humber
- £28,000 - £38,000 a year
- Hybrid work
- English
- Microsoft Office
- Analysis skills
- Employee discount
- Gym membership
Quick apply
9d
Technical Solutions Engineer
Everseen —Leeds
- Full-time
- Hybrid work
- Project management
- JavaScript
- Travel
Senior Full Stack Developer
Frontline Group —Peterborough
- Full-time
- Hybrid work
- Azure
- Engineering
- SQL
- Employee assistance programme
Quick apply
Integrations Developer
Techtronic Industries GmbH (TTI) —Maidenhead
- Full-time
- Azure
- Windows
- SQL
Senior React Native Engineer
Aristocrat —London
- Full-time
- Computer Science
- Engineering
- Bachelor's degree
Full Stack Product Engineer (SAAS) - (hybrid)
Eventogy —London
- £65,000 - £75,000 a year
- Full-time
- Hybrid work
- Bachelor's degree
- JavaScript
- APIs
- Gym membership
Quick apply
Forward Deployed Engineer
Salesforce —London
- Full-time
- Sales
- Salesforce
- Java
6d
Senior Software Engineer (Cards)
Lloyds Banking Group —Chester
- £63,152 - £94,728 a year
- Full-time
- Hybrid work
- Azure
- Java
- AWS
6d
Senior Technical Product Manager - Wallets (100% Remote)
Tether Operations Limited —London
- Full-time
- Remote
- English
- Bachelor's degree
- JavaScript
UX Designer (Design Systems) - Fire TV/Tablet , Devices and Services Design Team
Amazon Development Centre (London) Limited —London
- Full-time
- Hybrid work
- JavaScript
- AI
- Marketing
QA software engineer, Android
FDJ UNITED —South Wimbledon
- Full-time
- Laboratory experience
- Java
- JavaScript
4d
Senior Developer
Insolvency Service —Birmingham
- £48,429 - £54,686 a year
- Part-time
- Azure
- SQL
- Analysis skills
- Annual leave
- Employee assistance programme
6d
Product Designer (Remote, UK based)
WQA —London
- £20,000 - £32,000 a year
- Full-time
- English
- Project management
- Bachelor's degree
- Annual leave
- Sick pay
Quick apply
QE AI Lead Engineer
NTT Ltd —London
- Azure
- Oracle
- Java
Principal Artificial Intelligence (AI) Platform Engineer/Architect
WTW —London
- Full-time
- Hybrid work
- Azure
- AWS
- JavaScript
- Annual leave
- Employee assistance programme
Classically Trained Engineer
Plinth —London
- Full-time
- Computer Science
- JavaScript
- Agile
Lead Software Engineer
JPMorganChase —London
- Full-time
- Java
- Analysis skills
- C++

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Lead Developer (Mobile)

Post Office Ltd -
London

Apply Now

Job details

Permanent | Full-time

Benefits

Annual leave
Company pension
Employee assistance programme

Qualifications

CSS
Waterfall
React
Kanban
Data structures
iOS
Test-driven development
Java
Application development
SQL
AWS
JavaScript
Distributed systems
SCSS
Continuous integration
REST
Software development
GitHub
APIs
DynamoDB
Leadership
TypeScript
React Native
HTML

Full job description

Summary

Salary: Competitive plus comprehensive benefits package
Grade: 3A
Reporting Line: Development Manager
Contract Type: Permanent
Location: London
Closing Date: 17th June 2026

What to expect

The Lead Developer will define the technical direction, lead and mentor a team of Senior and Mid‑Level Software Engineers, and own the end‑to‑end development and delivery of the Post Office Mobile Travel App and in‑branch Government Service applications. You will be a key driver in leveraging modern engineering practices and cloud services to deliver secure, high‑quality, scalable mobile experiences across iOS and Android.

Success will be achieved by applying well‑architected code, robust full‑stack integration with Post Office digital services, strong CI/CD automation, and a culture of technical excellence. This role is for an experienced leader who has delivered eCommerce/retail‑grade mobile applications at scale, with production experience in React Native (TypeScript) and cloud platforms (e.g., AWS), and who thrives in Agile environments.

What we can do for you

Now, more than ever, we understand that attracting the right talent is pivotal in driving the positive change needed throughout our organisation. Beyond a competitive salary, we offer a comprehensive benefits package that includes:

27.5 days annual leave that increases with tenure

Up to 18% on target bonus opportunity

Car allowance

Generous pension contribution

Life assurance

Income protection after 12 months service

Full support from our employee assistance programme and access to our employee benefits platform

Ever-evolving learning and development opportunities

Our commitment to embracing diversity extends beyond just words. We actively foster an inclusive workplace that values the unique perspectives and contributions from all colleagues. We hold the belief that Equity, Diversity, and Inclusion are not just vital but fundamental to our success and growth. Our priority lies in shaping a business that mirrors the diverse communities we reach, truly making Post Office 'Everybody's Business'. As an equal opportunity employer, we value and celebrate the differences among our people, ensuring that our practices reflect our dedication to inclusivity and equal representation for all.

What you’ll need to succeed

2–3 years of hands‑on team leadership and mentoring (goal setting, feedback, coaching, performance growth), with experience coordinating multiple workstreams
5+ years’ experience developing applications in a variety of languages and frameworks including ReactNative, TypeScript, Java, JavaScript, React, HTML, SCSS / CSS.
Production experience building and scaling ReactNative iOS and Android apps, including navigation, state management, offline patterns, native modules/bridging, and performance tuning (e.g., Hermes, Flipper).
Experience of cloud-native micro-services and distributed systems (ideally AWS)
Experience with serverless cloud services (Lambda/Api Gateway/Cognito/DynamoDB)
Understand and appropriately implement the WCAG (Accessibility) principles, guidelines and success criteria implemented
iOS and Android app store submissions, code signing/provisioning, TestFlight/Play Console, Fastlane, phased rollouts, and OTA update strategies (e.g., CodePush/EAS Update)
Strong understanding of data structures and architectures, using relational and/or non-relational database approaches with the ability to query using SQL
A strong understanding of test-driven development and testing conventions
Experience of developing and supporting RESTful APIs
Practical experience designing and maintaining CI/CD pipelines (GitHub Actions), including automated builds, tests, static analysis, security scans, and release automation
Experience of release processes and governance
Experience of full-stack software development principles, architecture and conventions
Experience of a wide range of SLDC methodologies, including Waterfall, Agile Scrum, Kanban, behavioural-driven development (BDD), and continuous integration
Understanding of security by design (OWASP MASVS/Mobile Top 10), secure storage, certificate pinning, secrets management, encryption in transit/at rest, GDPR/privacy considerations

About us

At Post Office Ltd, we’re proud to be at the heart of communities across the UK, upheld by the dedication and service of our postmasters. We offer essential services that people rely on every day, from parcels and banking to identity and government services. While we continue to evolve with digital innovation, our commitment to personal, face-to-face service remains core to who we are.

Our journey is one of reflection, growth, and meaningful change. We’re looking for people who think differently. Those with resilience, purpose, and a deep sense of responsibility to our postmasters, partners and the communities they serve.

If you're driven by the chance to make a real impact and help shape a future, built on progress and integrity, we’d love to hear from you. For more details visit careers.postoffice.co.uk

Application Guidance

Our commitment to embracing diversity extends beyond just words. While we’ve outlined key skills above, we recognise that great candidates come from a variety of backgrounds. We value diverse perspectives and are committed to building an inclusive workplace where everyone can thrive.

As a Disability Confident Employer, we recognise the value people with disabilities can bring to our business. If you require any reasonable adjustments throughout the recruitment process or would like further details on the job description, please contact [email protected]

We’re thrilled by your interest in this opportunity and truly value every application we receive. Please note the advert may close early if we receive a high volume of applications. Unfortunately, we’re unable to provide individual feedback on all submissions.

Apply Now

Refine Your Search

top javascript developer jobs

Lead Developer (Mobile)

Software Engineer

Quality Assurance Engineer

Software Test Analyst

Technical Solutions Engineer

Senior Full Stack Developer

Integrations Developer

Senior React Native Engineer

Full Stack Product Engineer (SAAS) - (hybrid)

Forward Deployed Engineer

Senior Software Engineer (Cards)

Senior Technical Product Manager - Wallets (100% Remote)

UX Designer (Design Systems) - Fire TV/Tablet , Devices and Services Design Team

QA software engineer, Android

Senior Developer

Product Designer (Remote, UK based)

QE AI Lead Engineer

Principal Artificial Intelligence (AI) Platform Engineer/Architect

Classically Trained Engineer

Lead Software Engineer

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