Senior Software Engineer – APIM, Gateway

Gravitee

. Design and deliver features end to end, from discovery and technical design through implementation, testing, release, and iteration.

Posted 9/22/2026full-timeDenver • Colorado • United StatesSenior💰 $160,000 per yearWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates expertise in designing and delivering Java-based APIs and services, with a strong focus on API security, observability, and responsive frontend development using TypeScript and Angular. Proven ability to manage production incidents and collaborate effectively across teams while utilizing AI-assisted development tools.

Highest-signal resume keywords

Java DevelopmentAPI Design and DevelopmentTypeScript and Angular DevelopmentElasticsearch/OpenSearchAPI Security Fundamentals

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

JavaREST API DesignMavenVert.xRxJavaTypeScriptAngularElasticsearchMongoDBAutomated Testing

Soft Skills

Clear CommunicationCollaborative Problem-Solving

Tools & Technologies

Gravitee API ManagementAI Coding AssistantsGit

Industry Keywords

API GatewayRate LimitingCORSOAuth2JWTMTLSPolicy and Plugin Chains

Tech Stack

Tools & technologies

AngularElasticSearchJavaMavenMongoDBRxJavaTypeScript

About the role

Key responsibilities & impact

Design and deliver features end to end, from discovery and technical design through implementation, testing, release, and iteration.
Build and maintain Gravitee API Management features across the gateway runtime, management API, and console, including the move to Gamma.
Work on API security, rate limiting and quotas, CORS, and policy and plugin chains in request/response flows.
Design and develop Java-based APIs and services using asynchronous and non-blocking patterns such as Vert.x/RxJava with backpressure.
Build responsive TypeScript and Angular interfaces and data visualizations.
Create observability views over Elasticsearch/OpenSearch logs and metrics.
Help customers configure and observe AI Gateways, MCP tools and servers, agent identity, and agent-to-agent interactions.
Model and transform operational data into understandable and actionable platform insights.
Own US-hours Level 3 and Level 4 APIM customer escalations as part of the L3 pager duty rotation.
Use LLMs and AI-assisted development tools for prototyping, implementation, testing, debugging, and exploration.
Write meaningful automated tests and contribute to reliable delivery practices.
Collaborate with product managers, designers, engineers, and technical leaders, including APIM teams in Europe and India.
Participate in code and design reviews, share knowledge, and help the team make practical technology and protocol choices.

Requirements

What you’ll need

5+ years building and running production backend software on a team that ships and supports its own product.
Personally resolved production incidents.
Strong Java experience.
Experience designing maintainable REST APIs and backend services.
Experience with Maven and a reactive stack such as Vert.x/RxJava with backpressure.
Strong TypeScript and modern frontend development experience using a component-based framework; Angular preferred.
Experience building data-rich interfaces and visualizations.
Working knowledge of API gateway and reverse-proxy architecture.
Knowledge of request lifecycle, policy and plugin chains, entrypoints/endpoints, and synchronous and event-driven APIs.
API security fundamentals: OAuth2, JWT, API keys, mTLS, rate limiting and quotas, and CORS.
Experience with MongoDB or relational databases.
Experience with Elasticsearch or OpenSearch.
Git-based workflow, code review, and writing automated tests.
Hands-on experience using LLMs or AI coding assistants in an engineering workflow.
Judgment to review and improve AI-generated output.
Clear communication, collaborative problem-solving, and ability to take an ambiguous problem through to production.
Equivalent practical experience accepted; no educational credential is specified.
Ability to work US hours for Level 3 and Level 4 customer escalations as part of the L3 pager duty rotation.

Benefits

Comp & perks

Competitive medical coverage.
Pension / 401(k) program options.
Stock options.
25 days of holiday plus in-country national holidays.
Three mental health days and a wellness allowance.
Your birthday off.
A professional development budget.
A hybrid work culture with hubs across regions.
Quarterly team events and an annual company offsite.
Opportunities to grow your scope and career.