Senior Software Engineer (Typescript, React, Next.js, AWS)
Join HL Tech and be part of the team, building software for the UK’s largest investment platform.
HL Tech is the technology hub of Hargreaves Lansdown (HL) – the UK’s number one platform for private investors, trusted by 1.9 million clients with over £155 billion in savings and investments. For over 40 years, HL has been helping people save and invest for a better future, earning over 200 industry awards, including Best Investment App and Best for Customer Service in 2024.
At HL Tech, we are an integral part of HL Group, working hand in hand with teams in the UK to develop software that directly supports HL’s core services. Our solutions are used daily by millions of clients, helping to power the operations of a leading financial institution.
We’re a team of 65 passionate tech professionals in Warsaw, collaborating closely with colleagues in the UK. Our culture is built on innovation, knowledge sharing, and continuous improvement—and we're looking for talented engineers to join a team developing mobile products using React Native and TypeScript. If you enjoy working with clean architecture, modern technologies, and being part of a supportive team that learns from each other, we’d love to hear from you!
Most colleagues work remotely, but you can also work from our office in WeWork Mennica Tower in central Warsaw. Please note, all work must be performed within Poland, as remote work from abroad is not allowed.
Why join us?
Work the way you want – fully remote from anywhere in Poland or hybrid from our modern WeWork office at Mennica Tower (Warsaw). We have solutions for regular employees and B2B.
New products, no maintenance – focus on building innovative solutions from scratch, using the latest technologies.
Healthy work-life balance – we value your time, which means no overtime culture.
Be part of something big – your work directly supports a leader trusted by millions.
Supportive, knowledge-sharing team – collaborate with experienced engineers who are passionate about clean code, best practices, and continuous learning.
Modern tools & technologies – develop enterprise-scale solutions in a tech-driven environment.
Your responsibilities
Writing high quality code adhering to agreed team and regulatory standards as well as review of others code
Working collaboratively with the team to help deliver significant new features for the business
Providing engineering support for existing applications when necessary
Ensuring existing and newly developed solutions are reliable, secure, performant and maintainable
Maintaining awareness of current secure coding practices and ensuring code produced is in line with these
Developing and evidencing automated tests alongside code produced
Documenting all solutions, produced to agreed team standards
Demonstrating a willingness to learn technologies & techniques embraced by the development team
Cultivate strong working relationships within the squad and across the organization
Actively participating in working groups and communities of practice designed to support the development team
Continually developing both technical and interpersonal skills
Must have:
At least 5 years of experience working with TypeScript and React including enterprise-grade experience (experience with large app decomposition, layers separation, and scalable architecture for enterprise-level applications)
Very good knowledge of HTML, CSS, JavaScript
Working knowledge of Next.js (preferably SEO solutions)
Hands-on experience with design patterns, programming and testing best practices
Have a mindset of continuous improvement in everything you do
Developing secure & maintainable code
Experience working with REST API and/or GraphQL
Experience in working with docker, Kubernetes using microservices architecture
C1-level proficiency in both English and Polish – you will use both languages in all aspects of your daily work.
Nice to have
Experience building mobile solutions using React Native
Experience with AWS
Building and maintaining CI/CD pipelines
Experience with accessibility (a11y) best practices in web apps, including WCAG compliance and keyboard navigation support
Soft skills & team fit
Collaborative and communicative – you work well with others, share knowledge, and express ideas clearly
Quality-driven with a continuous improvement mindset – you take pride in delivering clean, secure, and maintainable code while seeking ways to improv
Eager to learn and adapt – you embrace new ideas and grow with your team.
Comfortable in Agile environments – you thrive in cross-functional collaboration and value constructive feedback.
Benefits
Copy rights (50% tax relief due to creative type of work)
PPE (4% employer contribution without any additional cost nor employee contributions required)
Annual bonus depending on performance
Conference & Training budget
English lessons with native speakers
Private health care & Life insurance
MyBenefit Cafeteria (benefits platform)
2 additional days for volunteering events
Team events
Buddy programme
Opportunity to grow according to your level of expertise
Working with new technologies and a multi-diverse team
Many opportunities to share knowledge and ideas
In-house Trainings
Net per month - B2B
Gross per month - Permanent
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