Lead Developer

Endava•Ohio, OH

2d•Hybrid

About The Position

Design, develop, evaluate, and maintain responsive React applications, portals, and embeddable widget experiences that integrate with partner platforms. Build secure, versioned, well-documented REST APIs and microservices using C# and .NET Core, and implement business workflows and integrations across embedded finance providers, partner systems, enterprise APIs, webhooks, file exchanges, and AWS services. Work with PostgreSQL and MongoDB to design schemas, queries, indexes, migrations, and reliable data-access patterns. Contribute to AWS-native workloads running on EKS, Lambda, and batch/container services, using Step Functions or equivalent orchestration where appropriate. Develop production-grade unit, component, integration, contract, and end-to-end tests, including Jest for React and NUnit for .NET. Build reusable UI components and libraries, translate designs into accessible code, and optimize browser performance, responsiveness, and maintainability. Participate in API and event-contract design, code reviews, pairing, technical documentation, architecture discussions, and secure coding reviews. Contribute to infrastructure and delivery automation using CI/CD, Docker, Kubernetes, and infrastructure-as-code practices. Instrument services and user journeys with meaningful logs, metrics, traces, and alerts; troubleshoot defects and production issues across application layers. Collaborate with QA to improve automation, test data, environment readiness, and release confidence, and with SRE/operations teams to improve runbooks and recovery procedures.

Requirements

At least 5 years of experience building and supporting production software applications.
Strong C# and .NET Core skills, including REST APIs, dependency injection, asynchronous programming, testing, and secure coding.
Professional experience with ReactJS, modern JavaScript/TypeScript, component architecture, state management, HTML, and CSS.
Hands-on experience with PostgreSQL and MongoDB or comparable relational and document databases.
Experience with microservices, API-first development, third-party integration, and resilient distributed-system patterns.
Experience building applications on AWS and working with containers, Docker, and Kubernetes/EKS.
Ability to write automated unit and integration tests and diagnose issues across UI, API, data, and cloud layers.
Experience with Git-based workflows and CI/CD tools such as GitHub Actions, Jenkins, GitLab CI, or comparable platforms.
Ability to translate business and technical requirements into maintainable, well-documented implementations.

Nice To Haves

Experience with embeddable widgets, micro-frontends, white-label applications, or multi-tenant SaaS platforms.
Experience with AWS Lambda, Step Functions, ECS batch workloads, S3, KMS, certificate management, or secrets management.
Exposure to Python services or data pipelines and Python unittest.
Experience with Terraform or Pulumi and GitOps tools such as Argo CD.
Experience with Splunk, DataDog, Grafana, CloudWatch, distributed tracing, and production incident support.
Financial services, payments, embedded finance, lending, or banking-domain experience.

Responsibilities

Design, develop, evaluate, and maintain responsive React applications, portals, and embeddable widget experiences for integration into partner platforms.
Build secure, versioned, well-documented REST APIs and microservices using C# and .NET Core.
Implement business workflows and integrations across embedded finance providers, partner systems, enterprise APIs, webhooks, file exchanges, and AWS services.
Design database schemas, queries, indexes, and migrations, and develop reliable data-access patterns for PostgreSQL and MongoDB.
Contribute to AWS-native workloads running on EKS, Lambda, and batch/container services, using Step Functions or equivalent orchestration where appropriate.
Write production-grade unit, component, integration, contract, and end-to-end tests, including Jest for React and NUnit for .NET.
Build reusable UI components and libraries, translate designs into accessible code, and optimize browser performance, responsiveness, and maintainability.
Participate in API and event-contract design, code reviews, pairing, technical documentation, architecture discussions, and secure coding reviews.
Contribute to infrastructure and delivery automation using CI/CD, Docker, Kubernetes, and infrastructure-as-code practices.
Instrument services and user journeys with logs, metrics, traces, and alerts, and troubleshoot defects and production issues across application layers.
Collaborate with QA to improve automation, test data, environment readiness, and release confidence.
Collaborate with SRE and operations teams to improve runbooks and recovery procedures.

Benefits

Competitive salary package
Share plan
Company performance bonuses
Value-based recognition awards
Referral bonus
Career coaching
Global career opportunities
Non-linear career paths
Internal development programmes for management and technical leadership
Complex projects, rotations, internal tech communities, training, certifications, coaching, online learning platform subscriptions, pass-it-on sessions, workshops, and conferences
Hybrid work and flexible working hours
Employee assistance programme
Global internal wellbeing programme and access to wellbeing apps
Global internal tech communities, hobby clubs and interest groups, inclusion and diversity programmes, events and celebrations
Medical, dental, vision, disability coverage, and other benefit options (USA full-time roles only)
Flexible Spending Accounts for medical, transit, and dependent care (USA full-time roles only)
Employer-paid life insurance and AD&D coverage (USA full-time roles only)
Health Savings Account paired with a low-cost High Deductible Medical Plan (USA full-time roles only)
401(k) Safe Harbor retirement plan with employer match and immediate vesting (USA full-time roles only)