04/29/2026 updated

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Staff Backend & DevOps Engineer | .NET, AWS, Kubernetes | 15+ years

Warszawa, Poland
Only remote
Discrete Mathematics and Mathematical Modelling, Master Degree
Warszawa, Poland
Only remote
Discrete Mathematics and Mathematical Modelling, Master Degree

Profile attachments

Andrei_Voshchevoz_CV_backend_dotnet_cloud.pdf

About me

Backend and DevOps engineer with 15+ years of experience designing, building, and operating production-grade systems end-to-end. I own complete backend stacks - from domain modelling and API design through to the Kubernetes clusters, CI/CD pipelines, and observability that keep them running.

GitHub ActionsHelmAmazon Web ServicesC Sharp (Programming Language)DevOpsPython (Programming Language)PostgreSQLMicrosoft SQL ServersSoftware ArchitectureDatadogCircleCI.NET CoreGrafanaBackendGitKubernetesSentryRestful ApiTerraformAWS EKSDockerMicroservices
My core expertise spans the .NET ecosystem (C#, .NET Core, Entity Framework, Dapper, PostgreSQL/MS SQL) and modern cloud-native infrastructure (AWS EKS/ECS//RDS/Lambda, Kubernetes, Terraform, Helm). I have additional production experience with Python (Django, FastAPI), Node.js (NestJS), and the full Grafana/Loki/Prometheus/DataDog + Sentry observability stack.

Industry background: banking and quantitative finance, insurance, healthcare, fintech. Regulated systems requiring PII encryption, audit trails, zero-downtime migrations, disaster recovery, and compliance.

Typical engagements:
  1. Architecting, designing and building greenfield backend services with full operational tooling: API, database, observability, deployment
  2. Modernising legacy .NET applications and migrating them to cloud-native architectures
  3. Standing up complete engineering platforms from scratch (CI/CD, secrets management, observability, deployment)
  4. Authentication / authorization systems (IdentityServer, OAuth2, machine-to-machine)
  5. Observability rebuilds - Grafana, Loki, Prometheus, Sentry, DataDog.
Engagement model: Remote-first, available for travel for kickoff and critical milestones. Based in Warsaw, Poland - invoicing through my Polish legal entity (EU VAT registered). CET working hours +/-2h. English working language.

Languages

EnglishFluentPolishGood

Project history

Staff Infrastructure Engineer, Backend & Cloud Consultant

AI Startup (US, Series A)

Internet & IT

< 10 team member

  1. Built complete engineering platform from scratch.
  2. Local development environment, CI/CD pipelines, production deployment on EKS, full observability, secrets management with automated rotation, rollback mechanisms.
  3. Designed and documented developer onboarding workflow. Defined platform/product team interfaces.
  4. Stack: Python, FastAPI, AWS (EKS, RDS, S3, IAM, SSM), Kubernetes, Terraform, Terragrunt, Helm, Grafana, Sentry

Staff Backend Consultant

Insurance Industry (US)

Insurance

250-500 team member

Designed and built PII encryption system for legacy application, and built greenfield quote aggregation service integrating multiple insurance providers with async processing
  1. Stack: Node.js, NestJS, PostgreSQL, CipherStash, AWS (S3, SNS/SQS, IAM)

Staff Backend & DevOps Consultant

HealthTech (AU)

Internet & IT

10-50 team member

  1. Built authentication/authorization system on IdentityServer with seamless migration for existing users, SSO, and machine-to-machine auth.
  2. Deployed full observability stack from zero (Grafana, Loki, Prometheus, Sentry) for a company with no prior monitoring. Implemented automated alerting and incident response plan.
  3. Rebuilt CI/CD pipelines for all 12 cross-dependent applications, eliminating version drift and ensuring consistent deployments across environments.
  4. Stack: .NET Core, AWS (RDS, S3, IAM, Lambda, SSM, ECS/ECR), Docker, Kubernetes, Terraform, Helm, PostgreSQL, MS SQL, Grafana, Loki, Prometheus, Apache Kafka, IdentityServer

Senior Backend & DevOps Engineer

Consumer Review Platform (US)

Internet & IT

50-250 team member

Contributed to backend platform for a major US consumer review and recommendation site serving millions of monthly users. Work spanned serverless service development, AWS infrastructure, and data pipeline operations on a production platform handling high-traffic consumer-facing workloads.
  1. Stack: AWS Lambda, API Gateway, DynamoDB, SNS, SQS, S3, CloudWatch, Step Functions, EventBridge, python

Senior Backend Software Engineering Consultant

Healthcare (US)

Internet & IT

50-250 team member

Implemented backend REST API and financial amortization engine from scratch, replacing a legacy desktop application
  1. Skills: .net core, Kafka, Debezium, AWS (RDS, S3, IAM), Docker, Terraform, CI/CD, PostgreSQL

Risk management software engineer to senior project manager

Compatibl Technologies

Banking & Financial Services

50-250 team member

Led technical delivery and project management for quantitative finance and risk management systems serving top-tier European and international banks. Responsibilities spanned solution architecture, team leadership (up to 25 people across quant, development, QA, and support), client engagement, and hands-on development.

  1. Led delivery of risk management and derivatives pricing platforms for tier-1 banking clients including European Investment Bank, Commonwealth Bank of Australia, Svenska Handelsbanken, and African Development Bank
  2. Managed cross-functional teams of up to 25 engineers, quants, and QA specialists across multi-year client engagements
  3. Integrated CompatibL platform with industry-standard quantitative libraries - Numerix for derivatives pricing and risk, Murex for trading system data flows, alongside Bloomberg market data feeds
  4. Designed and delivered production systems for XVA calculations, counterparty credit risk, market risk (VaR, stressed VaR, FRTB), and regulatory reporting under Basel frameworks
  5. Ran client onboarding programmes including requirements gathering, architecture design, delivery planning, UAT coordination, and production deployment handover
  6. Built and mentored development teams from 3 to 25+ engineers. Defined coding standards, code review processes, and technical interview practices adopted across the company
  7. Stack: C# (primary for 9 years), .NET Framework / .NET Core, SQL Server, Oracle, Numerix, Murex, Bloomberg API, TeamCity

Software Engineer

Various fintech and public sector companies
Software engineering roles in fintech and public sector

Certificates

Certified ScrumMaster® (CSM®)

Scrum Alliance

2015

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