Java web developer Work, Jobs (with Salaries)

Senior Software Engineer
Zaizi —London
- £60,000 - £75,000 a year
- Hybrid work
- Mentoring
- Agile
- Annual leave
- Work from home
Quick apply
12d
FullStack Solution Architect (Exp in RFP/RFI) - London, UK - Fulltime - Hybrid
Capgemini Sogeti —London
- Hybrid work
- Business development
- AI
- Leadership
Senior Software Development Engineer
MITSUBISHI ELECTRIC ICONICS DIGITAL SOLUTIONS UK —Dudley
- £45,000 - £57,000 a year
- Full-time
- Computer Science
- Software troubleshooting
- Engineering
Quick apply
Senior Backend Engineer
Depop —London
- Full-time
- Hybrid work
- Mentoring
- Agile
- Communication skills
- Annual leave
- Employee assistance programme
Senior Associate, Full-Stack Engineer Opportunities
The Bank of New York Mellon Corporation —London
- Full-time
- AI
Principal Full Stack Engineer - Full or Part Time
Autotrader —Manchester
- £60,000 - £80,000 a year
- Part-time
Senior Software Engineer - Regulatory News
London Stock Exchange Group —London
- Full-time
- English
- AWS
- Software development
iCloud Platform - Senior Software Engineer
Apple —London
- Analysis skills
- AI
Senior Test Engineer
DRPG —Kidderminster
- Hybrid work
- Quality control
- Agile
- AI
Senior Software Engineer - QuantumBlack, AI by McKinsey
McKinsey & Company —London
- Doctoral degree
- Computer Science
- Master's degree
Senior Frontend Engineer
Version 1 —Belfast
- Full-time
- Mentoring
- Agile
- Communication skills
- Employee assistance programme
- Employee discount
Quick apply
Automation Engineer
CitySprint —Redhill
- £45,000 a year
- Full-time
- Hybrid work
- Software troubleshooting
- Continuous improvement
- Mentoring
- Annual leave
Quick apply
12d
Senior Front-End/Full-Stack Engineer
ONDA —London
- Hybrid work
- Computer Science
- Software troubleshooting
- No degree
Quick apply
Senior Digital Engineer (Java)
Love2shop —Liverpool
- Full-time
- Salesforce
- Travel
- Mentoring
- Employee discount
Quick apply
Senior II - Back-End Engineer
Preply —London
- Full-time
- Hybrid work
- Java
- Continuous improvement
- AI
Quick apply
Software Developer | Capital Markets
Marex —Nantwich
- Full-time
- AI
- Communication skills
Quick apply
Senior Application Security Engineer (Remote - United Kingdom)
Yelp —Birmingham
- Full-time
- Remote
- Employee stock purchase plan
- Annual leave
Full Stack Engineer (Senior)
Xe —London
- Full-time
- AI
- Leadership
- Communication skills
- Employee stock purchase plan
- Annual leave
Quick apply
Application Security Engineer
Amazon Development Centre (London) Limited —London
- Full-time
- Computer Science
- Engineering
- Java
- Flexible schedule
4d
FX Client Platforms - Senior UI Software Engineer (Vice President)
Citi —London
- Full-time
- Hybrid work
- Mentoring
- AI
- Communication skills
- Annual leave
- Employee assistance programme
12d

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Senior Software Engineer

Zaizi -
London

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Job details

£60,000 - £75,000 a year
12 days ago

Benefits

Cycle to work scheme
Annual leave
Company pension
Work from home
Discounted gym membership
Private medical insurance
Paid volunteer time

Qualifications

Kotlin
Node.js
React
User stories
Docker
CI/CD pipelines
PostgreSQL
Continuous integration
Back-end development
Mentoring
JSP
GitHub
Agile
SQLite
DevOps implementation
gRPC
Android development

Full job description

We are seeking a Senior Full Stack & Systems Engineer to join our Defence delivery team. This is a versatile, high-impact role designed for funded client delivery: you will build mission-critical web applications and API backends for central MoD programmes, while contributing to low-level system integrations (Kotlin, Android ART, IPC/AIDL) on tactical edge and Situational Awareness (TAK) platforms.

You will sit at the intersection of modern enterprise software engineering and tactical edge integration, ensuring all code meets MoD Secure by Design (SbD) principles and Def Stan 00-056 safety boundaries.

Requirements

Full-Stack Application Development: Design and build resilient, secure web applications, microservices, and APIs (TypeScript, Node.js, React, or Python) for cloud and hybrid MoD landing zones.
Edge & Tactical Systems Integration: Develop native Android background services (Kotlin on ART), IPC/AIDL interfaces, and Cursor-on-Target (CoT) data routers connecting front-end C2 displays (e.g., OmniTAK, ATAK) to backend services.
Secure by Design (SbD) Implementation: Write clean, well-tested code following NCSC Secure Development Principles, NCSC Cloud Security Guidance, and JSP 440 controls.
CI/CD & DevSecOps: Automate build, test, and containerisation pipelines (Docker, GitOps, GitLab CI/GitHub Actions) for both air-gapped systems and enterprise cloud environments.
Client Delivery & Mentorship: Lead technical user stories on funded MoD statements of work (SoWs), participate in Agile delivery ceremonies, and mentor mid-level engineers.

Required Qualifications & Experience
1. Defence & Security Baseline

Active UK SC Clearance (minimum) with UK nationality/sovereignty requirements.
Hands-on experience delivering under MoD software development standards and Secure by Design (SbD) frameworks.

2. Full-Stack Engineering (Web & APIs)

4+ years of production experience with modern Web stacks (TypeScript, React, Node.js, or Python/FastAPI).
Strong API design experience (REST, GraphQL, gRPC, WebSocket) and relational/non-relational database design (PostgreSQL, SQLite).

3. Systems & Mobile Architecture (Android ART)

Proficiency in Kotlin or Java on native Android environments, including background services, thread management, and Inter-Process Communication (IPC via AIDL/Binders).
Understanding of event-driven architectures, local socket communication, and memory optimization under resource-constrained conditions.

Desirable / Bonus Qualifications

Experience with tactical mapping frameworks (TAK/ATAK, WinTAK, OmniTAK) or military telemetry protocols (Cursor-on-Target / CoT, STANAG 4586).
Familiarity with containerisation at the edge (K3s, Podman) or local database layers (Room, RocksDB).
Knowledge of Defence safety standards (Def Stan 00-056 / 00-055) and ALARP risk management.

Benefits

Competitive Pay: Salaries reviewed annually to ensure they reflect your performance and market value.
Loyalty Pension: We invest in your future. Starting at a 5% employer contribution, we increase this by 0.5% every year after your third anniversary, up to a maximum of 8%.
Protection: Comprehensive Group Life Assurance for peace of mind.

Purpose & Culture

Real Impact: Work on mission-critical projects that secure and improve the UK's digital infrastructure.
Autonomy: A culture that empowers you to make decisions, prototype rapidly, and iterate towards success.
Service & Community: We support those who serve. 10 paid days for Reservist Military Service.

Work / Life Balance

Time Off: 25 days annual leave + Bank Holidays, with the flexibility to Buy/Sell additional days to suit your lifestyle.
Giving back: 2 paid volunteering days per year.

Development & Growth

Master Your Craft: Fully funded professional certifications (AWS, GCP, Agile, etc.) supported by 5 days paid study leave.
Expand Your Horizons: An additional £500 annual "Personal Choice" fund to learn whatever inspires you—work-related or not.
Support: Access to 1-2-1 professional coaching and team training to accelerate your career.

Health & Balance

Premium Health: Vitality Private Medical Insurance (includes Apple Watch, gym discounts, and rewards).
Flexibility: Genuine hybrid working with a WFH equipment allowance to perfect your home setup.
Wellbeing: Cycle to Work scheme and a commitment to sustainable, healthy working practices.

Quick apply

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