Senior Software Engineer - Data / Backend

Captify; Greater London; Hybrid; GBP 75,000 - 90,000; Full time

Job summary

A global technology company is looking for a Senior Software Engineer to join their team in London, responsible for developing full-stack self-service solutions for clients. The role requires strong expertise in elastic data management, with a focus on analytical processing. Ideal candidates will have at least 5 years of software development experience and must excel in collaborative team environments. Attractive benefits include flexible working hours, global office access, and comprehensive wellbeing support.

Benefits

Flexible core hours

Work from any Captify office

25 days holidays + bank holidays + your birthday

Wellbeing support – financial, mental health first aiders, yoga, sports, meditation

Pension and Cycle Scheme

Qualifications

• At least 5 years of experience in software development.
• Strong expertise in ElasticSearch or similar semi-structured data stores.
• Proactive self-starter who takes ownership and mentors team members.

Responsibilities

• Developing, designing and maintaining a reliable, scalable data-driven SaaS product.
• Working in a cross-functional team to deliver product features.
• Setting up monitoring for performance metrics and system behaviour.

Skills

Software development

Analytical data processing

Communication skills

Team collaboration

Education

B.Sc. in Computer Science or related field

Tools

ElasticSearch

Python

Node.js

Job description

Salary: £75,000 - 90,000 per year

Overview

We are looking for a Senior Software Engineer working as a part of the team responsible for providing a full‑stack self‑service solution to clients and partners for planning, activation, measurement, and insights, tapping into the best of Captify’s proprietary data and analysis.

Captify’s technologies have been built to extract maximum value from search for brands, partners and businesses all over the world and also to innovate & improve the consumer experience.

Responsibilities

• Developing, designing and maintaining a reliable, scalable data‑driven SaaS product
• Working in a cross‑functional team to deliver product features
• Working closely with full stack and ML engineers to improve and build out our Sense product
• Working with cutting‑edge technologies in a fast‑paced, start‑up like environment
• Setting up monitoring for performance metrics and overall system behaviour to have alerts for any anomaly detected
• Ensuring the quality of the product you deliver as a part of the team
• Experimenting with new tools and technologies, producing PoC to address business needs
• Be a part of self‑organising, result‑oriented agile team

Requirements

• At least 5 years of experience in software development
• Practical experience developing products with a focus on analytical data processing and querying
• Strong expertise in ElasticSearch or similar semi‑structured data stores
• Experience with Python and Node.js, or deep knowledge of one of the above with desire to learn the other
• Proactive self‑starter who takes ownership and is able to drive the project and mentor team members, good team player
• B.Sc. in Computer Science or related field
• Excellent communication skills in English

Technologies

• ElasticSearch
• Python
• NodeJS
• Backend

Benefits

• Flexible core hours and home working as per company policy
• Work from any Captify office in the world
• Pet friendly office based in Covent Garden, London’s Media Hub
• 25 days holidays + bank holidays + your birthday
• Give A Day Away volunteering scheme
• Wellbeing support – financial, mental health first aiders, yoga, sports, meditation
• Parent friendly policies
• Pension, Cycle Scheme, Eyecare Vouchers and retail discounts

Equal Opportunities

You are welcome at Captify for who you are, no matter where you come from, what you look like, or what your search history says about you. At Captify, equality is at the core of our culture and we are committed to building an inclusive global team that represents a variety of backgrounds, perspectives, beliefs, and experiences. The more diverse we are, the richer our community and the broader our impact. We don’t want you to fit in with our culture, we want you to add to our culture.

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