Software Architect
WallesterEstonia1 day ago
Full-timeEngineering, Information Technology
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About Us
Are you looking for an opportunity to shape the technical foundation of a fast-growing fintech company? Do you enjoy designing scalable, secure systems and solving complex architectural challenges? If yes, then Wallester AS might be the perfect place for you!
Wallester AS is an Estonian licensed payment service provider that develops financial digital technology and issues VISA cards. Since 2018, we have been an official Visa partner and Visa FinTech Fast Track Member issuing physical and virtual cards of any type: debit cards, credit cards, prepaid cards, and cards for business. Our distinctive advantage is a robust API-driven platform built by our in-house engineering teams and used by partners across Europe.
We are continuing to evolve our engineering organization and are establishing an Architecture team to support the long-term growth, scalability, and quality of our platform.
About The Role
As a Software Architect (Backend) at Wallester AS, you will be responsible for defining, evolving, and maintaining the overall backend architecture of our platform. You will work closely with the Lead Architect and the Head of Engineering, as part of the Architecture team, to ensure architectural consistency, scalability, security, and long-term technical sustainability across the company.
You will collaborate with engineering team leads, senior engineers, product managers, and other stakeholders to translate business, regulatory, and operational requirements into scalable and maintainable technical solutions.
This role is not a people management position, but it requires strong technical leadership, system-level thinking, and the ability to influence engineering decisions across multiple teams. A key part of your mission will be to raise the architectural maturity of the organization and to help grow existing engineering talent into Tech Leads and Architect roles over time.
Location
We are seeking a Software Architect to join Wallester’s headquarters in Tallinn (Golden Gate, Rotermanni Quarter).
Technology stack
Are you looking for an opportunity to shape the technical foundation of a fast-growing fintech company? Do you enjoy designing scalable, secure systems and solving complex architectural challenges? If yes, then Wallester AS might be the perfect place for you!
Wallester AS is an Estonian licensed payment service provider that develops financial digital technology and issues VISA cards. Since 2018, we have been an official Visa partner and Visa FinTech Fast Track Member issuing physical and virtual cards of any type: debit cards, credit cards, prepaid cards, and cards for business. Our distinctive advantage is a robust API-driven platform built by our in-house engineering teams and used by partners across Europe.
We are continuing to evolve our engineering organization and are establishing an Architecture team to support the long-term growth, scalability, and quality of our platform.
About The Role
As a Software Architect (Backend) at Wallester AS, you will be responsible for defining, evolving, and maintaining the overall backend architecture of our platform. You will work closely with the Lead Architect and the Head of Engineering, as part of the Architecture team, to ensure architectural consistency, scalability, security, and long-term technical sustainability across the company.
You will collaborate with engineering team leads, senior engineers, product managers, and other stakeholders to translate business, regulatory, and operational requirements into scalable and maintainable technical solutions.
This role is not a people management position, but it requires strong technical leadership, system-level thinking, and the ability to influence engineering decisions across multiple teams. A key part of your mission will be to raise the architectural maturity of the organization and to help grow existing engineering talent into Tech Leads and Architect roles over time.
Location
We are seeking a Software Architect to join Wallester’s headquarters in Tallinn (Golden Gate, Rotermanni Quarter).
Technology stack
- Golang
- gRPC, Protocol Buffers
- JSON REST APIs
- PostgreSQL, Redis
- Docker, Kubernetes
- AWS infrastructure
- Service-oriented / Microservice architecture
- Define and evolve the overall backend architecture of the Wallester platform
- Work closely with the Lead Architect and Head of Engineering on architectural vision, strategy, and governance
- Actively contribute to building and shaping the internal Architecture team
- Design scalable, reliable, and secure backend systems and services
- Establish and maintain architectural principles, standards, and best practices
- Review and guide technical designs for complex, high-impact, or cross-team initiatives
- Support engineering teams and tech leads in making sound architectural and technology decisions
- Mentor senior engineers and tech leads, helping them grow into future Tech Lead and Architect roles
- Identify and address systemic technical risks, bottlenecks, and technical debt
- Ensure backend systems meet performance, reliability, security, and compliance requirements
- Contribute to long-term technical strategy and platform evolution
- 8+ years of professional software development experience
- Strong background in backend system design and architecture
- Extensive experience with distributed systems, microservices, and APIs
- Strong experience with Java/Python/С#/Golang or comparable backend technologies
- Deep understanding of databases, data modeling, and data consistency (PostgreSQL)
- Experience designing systems for scalability, high availability, and fault tolerance
- Experience working with cloud platforms (AWS, GCP, or Azure)
- Excellent analytical, problem-solving, and communication skills
- Ability to clearly explain complex technical concepts to both technical and non-technical stakeholders
- Experience in fintech, payments, or other regulated industries
- Knowledge of security best practices and standards (OWASP, PCI DSS)
- Experience with event-driven architectures or messaging systems
- Familiarity with DevOps practices and infrastructure-as-code
- Experience participating in technical audits or compliance-driven projects
- Competitive salary
- Development and career opportunities
- Medical insurance upon completion of the probationary period
- Supportive and caring leadership
- Modern offices in the city center
- A chance to work as part of a highly motivated and talented team
- Referral program
- Stebby
- Team building and company events
- Free parking
Key Skills
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