Senior Backend Engineer (Go/Java) – 6 months contract with extension possibility.

Who we are:

Adaptiq is a technology hub specializing in building, scaling, and supporting R&D teams for high-end, fast-growing product companies in a wide range of industries.

About the Product:

PlainID is an authorization platform that centralizes policy management and enforces dynamic, real-time access control across applications, APIs and data. It combines centralized policy definitions with decentralized enforcement points to deliver low-latency authorization at scale. Integrated with IAM providers such as SailPoint, Okta and Azure AD, and supporting PostgreSQL, Elasticsearch and MongoDB back ends, PlainID serves over 100 enterprise clients in finance, healthcare and other regulated industries. The platform processes millions of authorization requests per day, addressing the industry challenge of fragmented and static access control. Experienced engineers ensure reliability, security and performance in this high-volume, data-intensive environment.

About the Role:

We are seeking a Senior Backend Engineer (Go/Java) to drive the evolution of the PlainID authorization platform. In this role you will own the design and implementation of critical backend components, working on existing microservices in Go and Java to add new features, migrate legacy code and optimize performance. You will collaborate with product managers, frontend developers, QA engineers and R&D teams to translate customer requirements into production-ready solutions. Given the platform’s complexity, high release cadence and multi-tenant cloud foundation, you will onboard quickly, leverage AI-assisted coding tools and operate with autonomy in cross-functional feature teams. Your contributions will directly influence platform scalability, security and customer satisfaction.

Key Responsibilities:

• Design and develop custom Go and Java solutions to address specific customer requirements or prototype product capabilities.
• Collaborate with R&D, product managers, frontend developers and QA engineers to transition custom implementations into production-grade features.
• Write high-performance, maintainable and reusable code in Go and Java following established design patterns.
• Establish and maintain a scalable multi-tenant cloud foundation on AWS and GCP.
• Define, monitor and meet performance metrics and KPIs for backend services.
• Integrate and manage data storage solutions including PostgreSQL, Elasticsearch and MongoDB.
• Deploy and operate containerized applications using Docker and Kubernetes in production environments.
• Use AI-assisted development tools (e.g., Copilot, Cursor) to accelerate code comprehension and delivery.
• Mentor team members and contribute to a fast-paced, monthly release cycle with heavy quality checks.

Required Competence and Skills:

• Bachelor’s or Master’s degree in Computer Engineering or a related field.
• Minimum 7 years of hands-on experience designing and developing backend solutions in Go and/or Java.
• At least 5 years of experience with Spring Boot for Java microservices.
• At least 5 years building and maintaining containerized applications with Docker and Kubernetes.
• At least 3 years working with relational databases (PostgreSQL) and NoSQL stores (Elasticsearch, MongoDB).
• Proven track record designing and operating multi-tenant architectures on AWS and GCP.
• Strong proficiency in Unix/Linux environments and command-line tools.
• Demonstrated ability to write high-performance, maintainable and reusable code.

Nice to Have:

• Experience with authorization and authentication processes.
• Deep understanding of cybersecurity principles and policy-based access control.
• Familiarity with AI-driven development tools (Copilot, Cursor).

Why Us:

We provide 20 days of vacation leave per calendar year (plus official national holidays of a country you are based in).

We provide full accounting and legal support in all countries we operate.

We utilize a fully remote work model with a powerful workstation and co-working space in case you need it.

We offer a highly competitive package with yearly performance and compensation reviews.