Senior Java Developer in London

Key Responsibilities

• Design and develop robust, scalable, and efficient Java applications.
• Utilize AWS services to build and deploy cloud‑based solutions, ensuring high availability and scalability.
• Design, implement, and maintain database schemas; write complex SQL queries and optimize database performance.
• Develop and manage batch processing systems to handle large volumes of data efficiently.
• Ensure code quality through code reviews, unit testing, and adherence to best practices.
• Work closely with cross‑functional teams, including product managers, QA engineers, and other developers, to deliver high‑quality software solutions.
• Identify and resolve performance bottlenecks, bugs, and other technical issues.
• Provide guidance and mentorship to junior developers, fostering a culture of continuous learning and improvement.

Qualifications

• Bachelor’s or master’s degree in computer science, engineering, or a related field.
• Proven 7+ years of experience as a Java developer in product development or services environments.
• Minimum 3+ years of experience with AWS services (EC2, S3, Lambda, Step Functions, Event Bus, etc.).
• Minimum 5+ years of experience with relational databases (Oracle, My SQL, Postgre SQL), ability to write complex joins and troubleshoot performance.
• Proficiency in Java, Spring Framework, Hibernate, and RESTful APIs.
• Excellent analytical and problem‑solving skills.
• Strong verbal and written communication skills.
• Ability to work effectively in a collaborative team environment.
• Preferred Qualifications
• Hands‑on experience with batch processing frameworks and tools.
• Experience with Python (minimum 2 years).

Benefits

• Quarterly Performance‑Related Profit Share Scheme.
• Career progression and mentorship coaching through Strength in Balance & Leadership schemes.
• Flexible/remote working options.
• Pension, private healthcare cover, life assurance, financial advice, and employee discount scheme.
• Wellbeing programmes: gym discounts, bike‑to‑work, fitness classes, mindfulness workshops, employee assistance programme.
• Generous holiday allowance, enhanced maternity/paternity leave, marriage/civil partnership leave, and special leave policies.
• Educational assistance and incentive for certifications and accreditations (AWS, Microsoft, Oracle, Red Hat).
• Reward schemes including Annual Excellence Awards and Call‑Out platform.
• Environment, Social and Community First initiatives.
• Equal Employment Opportunity

Version 1 is an equal opportunities employer.

We are committed to building a diverse, inclusive and respectful workplace where everyone feels valued and able to thrive.

We welcome applications from people of all backgrounds, identities, lived experiences, including those shaped by disability and neurodiversity.

If you need reasonable adjustments, please contact at Version 1.

We will consider all requests carefully, respectfully and confidentially.

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