Go Engineer @ Mondu
Mondu’s mission is to build the world’s leading B2B payments platform. You will join a high-performing engineering team working on core purchasing systems powering credit risk, fraud detection, and operational workflows.
Our architecture is microservices-based, event-driven, and cloud-native. While Go remains the primary backend language, the systems you build will increasingly integrate with AI-powered decisioning, data intelligence pipelines, and automation systems.
This role is ideal for engineers who enjoy distributed systems, high-scale backend engineering, and working at the intersection of fintech and AI-driven decisioning.
We are evolving our platform to leverage:
● AI-assisted assessments
● LLM-powered internal tools for operations and support automation
● Event-driven intelligence pipelines for real-time decisioning
● Data-rich services that feed machine learning models
● Strong emphasis on observability and automated decision systems
You won’t just build APIs. You’ll help shape how intelligent systems make financial decisions at scale.
Requirements:
● Strong proficiency in Go for building scalable backend services
● Deep understanding of distributed systems, microservices, and event-driven architecture
● Experience designing and building systems that are data-intensive
● Strong communication skills and ability to work across product, data, and engineering teams
● Ability to design scalable, secure, and maintainable software systems
● Strong debugging and problem-solving skills in production environments
● Understanding of software architecture patterns and tradeoffs
● Practical experience integrating LLMs into production systems
● Understanding of how to build guardrails around AI decisioning: fallbacks, confidence thresholds, human-in-the-loop escalation, and auditability of automated decisions
Technical Skills:
● Go (core requirement)
● PostgreSQL (and relational modeling at scale)
● Kafka (event-driven systems, streaming pipelines)
● Redis (caching, low-latency systems)
● AWS (EKS, S3, IAM, etc.)
● Kubernetes
● Terraform (infrastructure as code)
● GitHub Actions (CI/CD)
● LLM APIs
Desirable but not essential:
● Experience in fintech, payments, or high-risk transaction systems
● Startup experience with rapidly evolving architecture
● Comfortable working with Frontend Applications
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Q & A:
- Does the job come with a probation period, and if so, how long does it last?
Yes, there is a 3-month probation period.
- What is the expected work schedule?
Full-time, flexible. You can work remotely and also you can choose hybrid mode where you can combine working on-site (in Lviv office) and remotely.
- How many vacation and sick days are provided?
Annual paid vacation — 20 working days/ 7 unconfirmed sick days/days off a year.
Social package & benefits:
- Full medical insurance
- MacBook & accessories
- English lessons
- Accountant assistance
- Minimal bureaucracy, synergy, and formalities, primarily focusing on effective communication
Hiring process:
- Screening call with Recruiter (soft skills interview) ~ 20 min
- 2 Technical interviews with Managers with simple live coding @ Mondu + CEO of Smart Choice Software ~ 90 min/each
- Possible interview with Engineering Manager @Mondu ~ 60 min