Senior Software Developer
Are you looking for a responsible role in a fast-growing Helsinki-based scale-up with strong multinational business and proven
growth? Do you have solid experience in software development, and do you take security just as seriously?
How does a key role in a rapidly growing Finnish success story sound? At Kultakiertue, we are the market leader and pioneer in the
purchasing and evaluation of precious metals. We already operate in the Nordics, Europe and the USA, and we keep expanding into
new markets. More than 100 professionals work within our unique service concept, and our growth is only accelerating. Now is the
perfect time to join us on this journey.
We're looking for a hands-on Senior Developer to build and scale our internal software ecosystem together with our in-house
engineering team, using modern frameworks and tools like SvelteKit, Vercel, Supabase and PostgreSQL.
Our platform runs the whole business end to end: online booking for customers, a field application for our purchasing agents, and
admin tooling for payments, controlling and compliance. Because we handle customer data, banking and regulatory reporting to
authorities in multiple countries, security and data protection are not an afterthought for us. They are a core feature of the
product, and you'll help keep it that way as we expand into new markets.
KEY RESPONSIBILITIES
Develop new features and integrations across our booking, field-agent and admin applications
Roll out our services in new countries, including country-specific compliance and reporting requirements
- Own security in day-to-day development: access control, secure handling of personal and financial data, and safe integration
patterns
- Contribute to secure architecture and technology decisions, including threat modeling, testing, code review, and dependency and
secrets hygiene
Build and maintain integrations with payment providers, accounting systems and authority reporting interfaces
Monitor and optimize workflows, data quality and system reliability
Support broader IT and software needs across the company
WHAT YOU BRING
Proven track record building complex, mobile-first web apps (Svelte/SvelteKit or similar)
Strong experience in backend and/or frontend development (Node.js, TypeScript, React, Vue or similar)
Solid database and integration skills (PostgreSQL, REST APIs, row-level security a plus)
- A security-first mindset: you think about authentication, authorization, PII handling and the OWASP Top 10 as part of normal
development, not as a separate phase
Experience working with sensitive data (personal data, payments, or regulated/compliance-heavy domains) is a strong plus
Familiarity with GDPR and practical data-protection engineering is appreciated
Experience in fast-paced startup environments
Fluent English (Finnish or other Nordic languages are a plus)
WHAT WE OFFER
A truly agile, tight team environment where your ideas matter
Responsibility and freedom to influence architecture, technologies, security practices and ways of working
Unlimited AI tokens and the modern tools and resources you need
Real ownership of security in a domain where it genuinely matters: precious metals, payments and regulatory reporting
A supportive, skilled and growing team
A hybrid role with presence at our Käpylä office a few days a week
Competitive salary and company bonus scheme
Career growth opportunities in a rapidly scaling company
MORE INFORMATION
The salary for this position ranges from 6000-7500 € per month, depending on the selected candidate’s skills and experience.
INTERESTED?
Please submit your CV and application, including your salary expectations. We review applications on an ongoing basis, so we
encourage you to apply as soon as possible.
Let's talk more soon!