Lead Architect

Location: Remote U.S. preferred location would be greater Boston area.

• Occasional travel requirements to Bedford MA office for occasional in‑person whiteboard sessions 

• Team: Engineering

• Type: Full‑time

About the Role

We’re seeking a hands‑on Lead Software Architect and decisive technical leader to design and evolve a secure, multi‑tenant, cloud‑native platform built on .NET in AWS. Our stack includes PostgreSQL, React with Fluent UI, and modern DevSecOps practices. You will serve as the architecture decision maker: define the target state, make and record key trade‑offs (ADRs), communicate clearly to executives and engineers, and partner with Security/Compliance to meet HIPAA requirements. You’ll guide teams through delivery while keeping solutions simple, scalable, and cost‑aware.

What You’ll Do

• 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.

Required Qualifications

• Exceptional communication and influence skills: clear written/verbal storytelling for executives, customers, and engineers; facilitation of workshops and whiteboard sessions.

• 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.

Nice to Have

• Experience with HL7 v2/FHIR integrations, EHR ecosystems (Epic/Cerner), or interface engines (e.g., Mirth Connect).

• HITRUST/SOC 2 program experience (controls, evidence, and audit readiness).

• Messaging/streaming: RabbitMQ, SQS/SNS, or Kafka; patterns for exactly‑once‑effect via idempotency.

• Container orchestration (EKS or ECS), service meshes, and zero‑trust networking.

• Caching (Redis/ElastiCache), search (OpenSearch/Elasticsearch), and reporting/analytics patterns.

• Performance engineering (load modeling, flamegraphs, memory/GC tuning in .NET).

• Experience with Next.js or SSR/edge rendering for React.

What Success Looks Like (6–12 months)

• A vetted reference architecture with ADRs, diagrams, and guardrails adopted across teams.

• Production‑ready multi‑tenant foundation with automated provisioning and per‑tenant telemetry.

• Secure, observable MVP deployed to AWS with defined SLOs and error budgets.

• CI/CD delivering fast, safe releases (blue/green or canary), with automated quality gates.

• Evidence mapped to HIPAA/SOC 2/HITRUST controls for key services.

Work Style & Collaboration

• Remote‑first with very limited in‑person whiteboard sessions (≤1–2 days per quarter or as needed with advance notice); travel supported.

• Partner with Product, Security/Compliance, and Customer Success; engage with key customers and clinical stakeholders when needed.

• Lead design reviews and coach teams; prefer simple, evolvable solutions over speculative complexity.

Equal Opportunity

We’re an equal‑opportunity employer. We celebrate diversity and are committed to creating an inclusive environment for all employees.

Interested? Send your resume or portfolio of architecture work (diagrams, ADRs, talks) and let’s talk.

#LI-VL1

Jonas Software is a leading provider of enterprise management software solutions, serving a wide range of vertical markets including hospitality, healthcare, construction, education, personal care, fitness, leisure, moving and legal services, to name a few. Within these markets, Jonas is comprised of over 65 distinct brands, each a respected leader in its domain.

Jonas’ vision is to be the branded global leader across these verticals and to be recognized by customers and industry stakeholders as the trusted provider of “Software for Life.” We are committed to technology, product innovation, quality, and exceptional customer service.

Jonas Software supports over 60,000 customers in more than 30 countries. We employ over 6,000 skilled professionals, including industry experts and technology specialists. Across our broader network, we support a global workforce of more than 30,000 employees.

Headquartered in Canada, Jonas Software has a global footprint with offices around the world. We’re a 100% owned subsidiary of Constellation Software Inc., based in Toronto, publicly listed on the TSX (CSU.TO), and a member of the S&P/TSX 60 Index.