Jonas Software

Lead Architect

Jonas Software

full-time

Posted on:

Location Type: Hybrid

Location: Boston • 🇺🇸 United States

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Job Level

Senior

Tech Stack

ASP.NETAWSCloudDistributed SystemsGRPC.NETPostgresRabbitMQReactRedisSDLCTerraform

About the role

  • Act as the architecture decision maker: own ADRs and design governance, set standards, and make build/buy/vendor choices that balance speed, cost, and risk.
  • Communicate with clarity: translate trade‑offs for executives and customers; facilitate high‑signal design reviews and whiteboard sessions.
  • Own the architecture for a greenfield/cloud‑native .NET platform on AWS; produce reference architectures, threat models, and deployment blueprints.
  • Design for multi‑tenant SaaS: tenant isolation, data partitioning strategies, rate limiting, per‑tenant configuration, and cost/usage observability.
  • Model core domains & APIs using domain‑driven design; define contracts, versioning, and API gateways; champion consistency and evolvability.
  • Select & integrate AWS services (ECS/EKS or Lambda, API Gateway/ALB, S3/CloudFront, RDS/Aurora PostgreSQL, ElastiCache/Redis, SQS/SNS or RabbitMQ, OpenSearch, KMS, Secrets Manager, CloudWatch, IAM).
  • Data architecture for PostgreSQL: schema and migration strategy, performance (indexes/partitioning), read/write scaling, and HA/DR (backups, replicas, RTO/RPO).
  • Frontend architecture with React + Fluent UI: component library strategy, accessibility (WCAG), performance budgets, and SSR/edge delivery where appropriate.
  • Security‑by‑design: encryption in transit/at rest, least‑privilege IAM, SSO (OIDC/SAML), secret rotation, audit trails, and secure SDLC gates.
  • HIPAA alignment: partner with Security/Compliance on safeguards (administrative, physical, technical), logging/audit requirements, and evidence for SOC 2/HITRUST.
  • Reliability & performance: SLOs/SLIs, capacity planning, load testing, chaos/resiliency patterns (circuit breakers, timeouts, backoff, idempotency).
  • Observability: implement distributed tracing/metrics/logging (OpenTelemetry), golden signals, dashboards, and actionable alerting.
  • DevEx and velocity: CI/CD pipelines, Infrastructure as Code (Terraform or AWS CDK), environment strategy (feature envs/preview apps), and automated quality gates.
  • Mentor and lead engineers through design reviews, pairing, and coaching; foster a high‑trust, learning‑oriented culture.

Requirements

  • 8+ years building production web platforms; 3+ years in an architect/tech‑lead role owning system design and decisions.
  • AWS expertise designing secure, highly available, cost‑aware services (VPC/networking, IAM/KMS, API Gateway/ALB, ECS/EKS or Lambda, RDS/Aurora PostgreSQL, CloudWatch).
  • Expert in C#/.NET (ASP.NET Core) and modern API patterns (REST/JSON; bonus: gRPC).
  • Proficiency with PostgreSQL (schema design, performance tuning, migrations, backup/restore/replication).
  • Frontend proficiency in React; familiarity with Fluent UI and accessibility best practices.
  • Deep understanding of multi‑tenant SaaS patterns, distributed systems, and event‑driven architectures.
  • Track record implementing observability, CI/CD, and IaC in production.
  • Security fundamentals: OAuth2/OIDC, TLS, least‑privilege IAM, secure coding; working knowledge of HIPAA technical safeguards.
Benefits
  • Remote‑first with very limited in‑person whiteboard sessions (≤1–2 days per quarter or as needed with advance notice)
  • Travel supported

Applicant Tracking System Keywords

Tip: use these terms in your resume and cover letter to boost ATS matches.

Hard skills
C#.NETASP.NET CorePostgreSQLReactAWSInfrastructure as CodeCI/CDdomain-driven designmulti-tenant SaaS
Soft skills
communicationmentoringleadershipcollaborationdesign governanceproblem-solvingfacilitationcoachingtrust-buildinglearning orientation