Senior Software Engineer

REMOTE FIRST, FORTNIGHTLY VISITS TO LONDON HQ / PERMANENT / FULL-TIME

Who are we?

At Qflow we’re on a mission to transform one of the world’s most pollutive industries: Construction. We help them cut waste and reduce their carbon emissions by providing construction and development teams with the data driven insights they need to deliver productive, profitable, and sustainable projects. Our team combines construction experience with software engineering and cutting edge data science to deliver real-time alerts to risks and opportunities during construction.

After successfully raising an oversubscribed Series A investment round, our Engineering team is now growing. We are seeking a talented Senior Software Engineer who is eager to contribute to building a sustainable future. If you are passionate about sustainability, believe that with cutting-edge technology we can address tangible issues, you value radical transparency, unstoppable tenacity and encourage collaboration and curiosity within your team, this opportunity is tailor made for you

Your team and your role

We’re excited about the future and the growth and development of Qflow’s Engineering team! To support our plans, we’re looking for an experienced Software Engineer to join the team. In this role, you’ll be responsible for designing and developing the core infrastructure that powers our products. This role reports to the Senior Engineering Manager, and collaboration is key. You’ll work closely with the Engineering team, Product, and other departments to deliver high-quality code, scalable solutions, and ensure the codebase follows best practices. On a day-to-day basis, you will focus on the following:

• Designing, developing, and maintaining scalable, performant core platform infrastructure that powers our products.
• Driving and maintaining software quality through well-documented code, comprehensive testing, and continuous improvement of development processes.
• Leading code reviews and contributing to architectural decisions that shape the technical direction of the platform.
• Partnering with the Product team to translate business requirements into technical specifications and deliverable solutions.
• Fostering engineering excellence through technical mentorship, knowledge sharing, and cross-team collaboration.

Your Skills

• Strong experience in an engineering environment, with a focus on building
• complex, scalable, and performant systems.
• Expertise in one or more of our core programming languages, such as C#,
• TypeScript, Python, or related languages.
• Demonstrated ability to identify opportunities, take initiative on improvements,
• and drive projects from concept to completion with minimal oversight.
• Strong product-oriented approach with experience in iterative development,
• including gathering user feedback, rapid prototyping, and continuously
• refining features based on metrics and customer needs.
• Deep knowledge of cloud platforms (particularly Microsoft Azure), including
• instrumentation, observability, and high-volume system monitoring.
• Proven track record in delivering high-quality code through test-driven
• development, pair programming, and collaborative development practices.
• Excellent communication and interpersonal skills, with demonstrated ability to
• convey complex technical concepts to diverse audiences and stakeholders.
• Strong mentorship capabilities with experience in guiding other engineers,
• participating in a culture of continuous learning, and supporting technical
• growth.

Our Tech Stack

C#, React, TypeScript/JavaScript, Python, .NET Core, Azure DevOps, RESTful APIs, Distributed Systems, Asynchronous Services, Distributed Storage, Azure Tables, SQL Server and Cosmos, Redis, xUnit, Terraform.

Our offer

💸 Salary up to £85k depending on experience

🏡 Remote-first team with regular meetings in London HQ

💻 Company laptop and tools

🏝️ 25 days annual leave + 3 days company closure at Christmas + bank holidays

🩺 Private medical insurance

🏥 Critical illness and life insurance

💰 Pension contribution up to 7%

👥 Enhanced family policy

🙋 Paid volunteering days

✈️ Overseas working policy

🌎 We’ll offset your annual carbon footprint on your behalf via Ecologi

📚 Learning & development and career progression opportunities

🤩 Company social events (online and in person!)

Our promise

Creating an environment where everyone feels valued, respected and heard is at the forefront of everything we do. We are committed to providing equal employment opportunities regardless of race, colour, ancestry, religion, sex, national origin, sexual orientation, age, citizenship, marital status, disability, gender identity, or veteran status.

We created a culture that extends to all aspects of our operations, including step-free access, as we believe that everyone should have equal opportunities to access our facilities, services, and digital platforms.

Important Notice: No Recruitment Agencies

We kindly request that recruitment agencies refrain from contacting us regarding this job posting. We are solely interested in direct applications from candidates. Any unsolicited communication or resumes received from agencies will not be considered or acknowledged. We encourage candidates to apply directly through the application process provided. Thank you for your understanding.