Job VC

Senior Software Engineer (C# / .NET Core)

Wetelo · dou · Senior · Not specified · Луцьк, за кордоном, віддалено
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Dear сandidate!
We value every application we receive and carefully review each one. If your background aligns with our current needs, we will reach out to you within a week. If you don’t hear from us during that time, it means we’ve decided to move forward with other candidates at this stage.
We sincerely appreciate your interest in Wetelo and hope to stay in touch!
Please include your salary expectations (monthly, USD) in your application.
Wetelo
is a software development company building custom SaaS products since 2010. We partner with startups and growing businesses to design and develop scalable, business-driven products, taking full ownership from idea to long-term support.
Currently, we are looking for a
Senior Back-End Engineer (C# / .NET Core)
to join a long-term fintech platform in the investment management domain.
Domain:
FinTech / Investment Management
Experience:
6+ years
About the Role
This is a
hands-on individual contributor role
within a small team of experienced senior engineers.
You will focus on building and evolving the
core REST API layer
that powers client accounts, reporting, and integrations with financial providers.
This is
not a managerial or architect-only position
— we are looking for someone who enjoys
writing high-quality code, solving real engineering problems, and working closely with other senior engineers
.
Tech stack
— C# / .NET Core
— SQL (relational databases)
— MongoDB, Firestore (or other NoSQL DB)
— REST API development
— Batch / background processing
— Cloud platforms (AWS / Azure / GCP)
— CI/CD pipelines
— Distributed systems concepts
Responsibilities
— Design and implement backend features and services in .NET Core
— Maintain and evolve the existing fintech platform
— Take ownership of backend components from design to production deployment
— Develop and extend REST APIs used by internal and external systems
— Implement integrations with brokers, payment providers, and third-party services
— Write high-quality, scalable, and fault-tolerant code
— Improve performance, reliability, and maintainability
— Troubleshoot and support production systems
— Participate in technical discussions as a senior contributor
— Review code and collaborate closely with other senior engineers
— Contribute to CI/CD and cloud improvements when relevant
Requirements

6+ years of backend development experience
— Strong experience with
C# / .NET Core
— Strong experience with
SQL (including performance optimization)
— Experience with
MongoDB / Firestore or other NoSQL databases
— Strong experience designing and implementing
REST APIs
— Experience working with
production systems
— Understanding of
distributed systems and background processing
— Comfortable working in a
senior, flat team structure (no hierarchy)
— Ability to work
autonomously and take ownership
— English level
B2+
Nice to have
— Experience with
cloud platforms (AWS, Azure, or GCP)
— Experience with
CI/CD pipelines and Kubernetes
— Experience with
event-driven systems (RabbitMQ or similar)
— Experience in
financial services / investment platforms (non-crypto)
— Experience with
high-load or scalable systems
What we offer
— Supportive and comfortable working environment
— Free online speaking club to practice English
— Training and self-development opportunities
— Team-building events and corporate parties
— Social security package and additional perks
Hiring Process
Pre-screen interview with a Recruiter → Technical interview → Interview with the client → Job Offer