Lead Developer

Endava

. Design, develop, evaluate, and maintain responsive React applications, portals, and embeddable widget experiences integrated into partner platforms .

Posted 10/21/2026full-timeRemote • Ohio • United StatesSeniorWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates expertise in building and maintaining responsive React applications and secure REST APIs using C# and .NET Core, with a strong focus on AWS services and microservices architecture. Proficient in database design and implementation using PostgreSQL and MongoDB, along with CI/CD practices and automated testing.

Highest-signal resume keywords

C# And .NET CoreReactJS And Modern JavaScript/TypeScriptAWS Services And MicroservicesPostgreSQL And MongoDBCI/CD And Docker

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

REST APIsAsynchronous ProgrammingUnit TestingIntegration TestingComponent ArchitectureState ManagementInfrastructure-As-CodeMicroservicesDependency InjectionSecure Coding

Soft Skills

CollaborationCommunicationProblem-SolvingDocumentationAdaptability

Tools & Technologies

AWS LambdaDockerKubernetesGitHub ActionsJenkinsGitLab CITerraformPulumiSplunkDataDog

Industry Keywords

Financial ServicesEmbedded FinancePaymentsLendingBanking

Tech Stack

Tools & technologies

AWSCloudDockerGrafanaJavaScriptJenkinsJestKubernetesMicroservicesMongoDBPostgresPythonReactSplunkTerraformTypeScript.NET

About the role

Key responsibilities & impact

Design, develop, evaluate, and maintain responsive React applications, portals, and embeddable widget experiences integrated 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 schemas, queries, indexes, migrations, and reliable data-access patterns using PostgreSQL and MongoDB
Contribute to AWS-native workloads running on EKS, Lambda, and batch/container services, with Step Functions or equivalent orchestration
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; troubleshoot defects and production issues across application layers
Collaborate with QA to improve automation, test data, environment readiness, and release confidence
Collaborate with SRE/operations teams to improve runbooks and recovery procedures

Requirements

What you’ll need

5+ years 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
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
Participation in both internal meetings and external meetings via video calls, as necessary
Ability to go into corporate or client offices to work onsite, as necessary
Valid driver’s license and acceptable driving record are required for positions requiring business travel and/or event attendance

Benefits

Comp & perks

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 platforms subscriptions
Pass-it-on sessions
Workshops
Conferences
Hybrid work and flexible working hours
Employee assistance programme
Global internal wellbeing programme
Access to wellbeing apps
Hobby clubs and interest groups
Inclusion and diversity programmes
Events and celebrations
Robust healthcare and benefits including Medical, Dental, vision, Disability coverage, and various other benefit options
Flexible Spending Accounts (Medical, Transit, and Dependent Care)
Employer Paid Life Insurance and AD&D Coverages
Health Savings account paired with our low-cost High Deductible Medical Plan
401(k) Safe Harbor Retirement plan with employer match with immediately vest