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Principal Software Engineer - Identity & Access Management

SezzleTürkiye, RemoteDV-Development
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Salary
Not listed
Job type
Full-time
Work mode
Remote
Posted
30 Jul 2026
Status
Open · checked 7d ago

About this role

The Principal Software Engineer for Identity & Access Management at Sezzle is a fully remote role based in Türkiye that suits an experienced backend expert ready to own authentication and authorization platforms. This position offers a unique opportunity to drive technical vision and mentor engineering teams while transforming fintech shopping experiences.

Role Overview

Sezzle is seeking a talented and motivated Principal Software Engineer to lead the evolution of authentication and authorization across the organization. This backend-focused position centers on building a purpose-built API auth gateway and a clean suite of identity and access management services. Working closely with Product, Security, Support, and various engineering groups, this role dictates the technical vision, architecture, and zero-downtime migration strategy for security-critical paths at the edge. The professional joining this team will establish platform-wide identity standards while utilizing AI-assisted development workflows to securely scale infrastructure.

Key Responsibilities

Own the technical vision and roadmap for authentication and authorization platforms, including API gateways and identity services.
Architect and build scalable, highly available auth services and components using Golang, AWS, and relational databases.
Design and execute phased, zero-downtime migrations of auth traffic with clear safety and rollback mechanisms.
Establish platform-wide identity standards including OAuth2/OIDC flows, token strategies, service-to-service mTLS, and fine-grained authorization models.
Partner with Security and Compliance to meet rigorous fintech regulatory requirements and champion secure-by-default coding patterns.
Set engineering best practices for observability, CI/CD, and security across teams.
Participate in on-call rotations, incident response, and postmortems for auth-critical paths.
Mentor fellow engineers and collaborate cross-functional to translate business goals into technical execution.

Requirements

12+ years of professional software engineering experience with extensive backend specialization.
Successfully deployed significant changes to a production application within the past 30 days.
Deep, hands-on expertise in authentication and authorization frameworks like OAuth2, OpenID Connect, SAML, JWT, session auth, RBAC, and ABAC.
Experience designing, building, or operating API gateways or auth proxies at scale.
Proven track record of leading large-scale service extractions or monolith-to-microservices migrations with minimal customer impact.
Strong proficiency in Golang and building RESTful APIs.
Expertise in SQL-based relational database management systems like MySQL and PostgreSQL.
Solid understanding of distributed systems design patterns and high-throughput, low-latency edge services.
Demonstrated AI-forward engineering experience actively utilizing AI coding assistants in daily development workflows.
Bachelor’s degree in Computer Science or a related technical field.

Nice to Have

Experience with identity platforms and standards implementations such as Keycloak, Auth0, Okta, or Ory.
Familiarity with service mesh and edge technologies like Envoy, Istio, rate limiting, and WAF integration.
Background in threat modeling, secure design reviews, and common authentication attack vectors.
Proficiency in observability tools including Prometheus, Grafana, Datadog, or New Relic.
Prior experience in fintech, payments, Buy Now Pay Later (BNPL), or consumer lending alongside PCI-DSS or SOC 2 compliance familiarity.
Experience with CI/CD pipelines, Docker, and Kubernetes.

Skills and Tools

Languages: Golang, TypeScript, Python
Cloud & DevOps: AWS, AWS Aurora RDS, Kubernetes, Docker, Git, GitLab
Databases: MySQL, PostgreSQL, Elasticsearch
Methodologies: OAuth2, OIDC, JWT, mTLS, RBAC/ABAC, API Gateways, AI-Assisted Development

Salary and Benefits

The salary range for this role is negotiable, spanning from $6,000 to $11,000 per month in gross USD, determined by location and experience level. This fully remote position includes principal-level scope and ownership without any commute or relocation requirements.

About the Company

Sezzle operates with a mission to financially empower the next generation through a shopping experience that blends cutting-edge technology with interest-free installment plans. The company focuses on driving real impact on merchant sales and consumer convenience while fostering a dynamic team environment centered on innovation, transparency, and calculated risk-taking.

How to Apply

Interested candidates should visit the official Sezzle careers page to submit an application for this remote position.

Skills and tech stack

PythonSQLAWSKubernetesDockerReactTypeScriptGolangLLM

Questions candidates ask

What is the monthly salary range for the Principal Software Engineer role?

The gross salary range is $6,000 to $11,000 per month in USD, which is negotiable based on location and experience level.

Is this job remote?

Yes, this is a fully remote position based out of Türkiye with no relocation or commute required.

How many years of experience are required to apply?

Candidates must have 12+ years of professional software engineering experience with significant backend expertise.

What primary programming language is used in this backend role?

Golang is the primary language used for building and maintaining RESTful APIs and auth services in this position.

What educational background is required?

A Bachelor’s degree in Computer Science or a similar technical field is required.

Ready to apply?

The application is on the official Sezzle careers page.

Apply on company site