SmarTek21

Design, optimize, and maintain MongoDB clusters ensuring performance, scalability, security, and reliability across environments. | 8+ years MongoDB production experience with expertise in sharding, replication, Atlas, backup/restore, automation, and security controls. | About the Role We’re looking for a Senior MongoDB Developer/Administrator with deep expertise in database performance, scalability, and architecture. You’ll own the design, optimization, and maintenance of MongoDB clusters across environments—ensuring speed, resilience, and data integrity for mission-critical systems.Key Responsibilities • Design, configure, and maintain MongoDB clusters, including replica sets and sharded environments. • Optimize database schema design, balancing embedded vs. referenced structures for performance and scalability. • Analyze and tune query performance using explain plans, index intersection, and profiling. • Implement and manage backup and recovery strategies (mongodump, snapshots, point-in-time recovery). • Automate deployment and configuration using Terraform, Ansible, or Ops Manager APIs. • Monitor and troubleshoot database health using Ops Manager, Atlas metrics, and custom monitoring scripts. • Manage security controls: RBAC, field-level encryption, TLS/SSL, audit logging, and LDAP integration. • Work with application teams to optimize MongoDB driver usage (Node.js, Python, Java). • Implement change streams, multi-document transactions, and time-series collections. • Support data migrations and cluster upgrades with minimal downtime. • Collaborate with infrastructure, security, and application engineers to align on data architecture best practices. Required Skills & Experience • 8+ years of professional experience working with MongoDB in production. • Proven expertise with aggregation pipelines, complex queries, and index optimization. • Strong understanding of sharding, replication, and oplog management. • Experience using MongoDB Atlas, including cluster configuration, VPC peering, and PrivateLink. • Proficiency in performance tuning and query analysis for large-scale databases. • Experience implementing backup and restore processes, including point-in-time recovery. • Hands-on experience with infrastructure as code for MongoDB automation. • Familiarity with Atlas security and compliance practices. Preferred Qualifications • Experience integrating MongoDB with cloud platforms (AWS, GCP, or Azure). • Knowledge of multi-region cluster management and serverless MongoDB setups. • Familiarity with data modeling patterns for analytics, logging, or time-series workloads. • Exposure to DevOps pipelines for database deployment and CI/CD integration. This is a Remote (work from home) position. For the individuals located in the United States Who We are... SmarTek21, founded in 2006, is an innovative digital transformation leader dedicated to empowering organizations through design-led, data-centric solutions. We believe that exceptional user experiences and intelligent data-driven insights are pivotal in shaping the future of business. At the heart of our approach is Design-Led Engineering, where we combine strategic design principles with cutting-edge technology to create tailored solutions that deliver significant business outcomes. Our commitment to accelerating digital transformation includes specialized expertise in Agile DevOps, Data Engineering and analytics, Testing Automation and support, and comprehensive Managed Application and Infrastructure Services. We’ve evolved from our consulting and development roots into a full-spectrum service provider, integrating advanced technologies like Generative AI (GenAI) to facilitate our clients' seamless, transformative digital journeys. A passion unites our dynamic team of technology visionaries and business strategists for innovation and excellence. At SmarTek21, you'll join a collaborative environment dedicated to shaping the digital landscape and driving impactful results for organizations worldwide. SmarTek21 is committed to fostering a diverse and inclusive environment. We encourage applications from individuals of all backgrounds and experiences.

Lead large-scale code refactoring and modernization initiatives for legacy systems in C++, C#, and Java. Optimize performance and scalability while ensuring modernized code is maintainable and testable. | Candidates must have over 10 years of professional development experience in C++, C#, and Java, with advanced knowledge of modern language features and performance optimization techniques. Familiarity with design patterns, refactoring techniques, and CI/CD pipelines is also required. | Role Purpose We are looking for a highly experienced Principal Software Engineer with mastery in C++ (modern standards), C#, and Java to lead large-scale code refactoring and modernization initiatives. This role is for someone who has spent years working in complex, performance-critical systems and can transform legacy, monolithic codebases into clean, modular, high-performance applications. ⸻ Core Responsibilities • Code Refactoring & Modernization • Lead large-scale refactoring of legacy systems in C++, C#, and Java. • Apply modern language features (C++17/20, C# 10+, Java 11/17) to improve performance, readability, and maintainability. • Eliminate technical debt, dead code, and anti-patterns through structured refactoring. • Redesign monolithic applications into modular, service-oriented architectures. • Performance & Scalability • Optimize memory usage, threading, and concurrency models. • Profile and fine-tune JVM, CLR, and native C++ runtime performance. • Apply low-level debugging and optimization techniques in high-performance environments. • Architecture & Standards • Implement SOLID, clean code, and design pattern practices. • Introduce coding guidelines, automated static/dynamic analysis tools (SonarQube, Coverity, clang-tidy). • Ensure all modernized code is testable, maintainable, and CI/CD-ready. • Collaboration & Mentorship • Partner with architects and technical leads to align modernization with long-term product strategy. • Mentor developers in advanced refactoring strategies, performance tuning, and clean architecture. • Conduct deep technical code reviews and enforce engineering best practices. ⸻ Required Technical Expertise • 10+ years of professional development across C++, C#, and Java with extensive cross-language exposure. • C++: • Advanced mastery of C++11/14/17/20 features (smart pointers, lambdas, move semantics, constexpr). • Strong knowledge of STL, Boost, multithreading, templates, and memory management. • Hands-on with low-level debugging, profiling tools (Valgrind, Perf, VTune). • C# / .NET: • Deep expertise in .NET 6+, .NET Core, and legacy .NET frameworks. • Strong understanding of CLR internals, async/await, threading, LINQ, and GC tuning. • Experience refactoring monolithic .NET applications into modular or microservice-based systems. • Java: • Advanced knowledge of Java 8–17 features (streams, lambdas, records, modules). • JVM tuning, garbage collection strategies, and threading/concurrency frameworks. • Experience in Spring / Spring Boot modernization and service decomposition. • Cross-Cutting Skills: • Strong background in design patterns, refactoring techniques, and code smells elimination. • Expert in unit testing, TDD, and regression-safe refactoring. • Familiarity with CI/CD pipelines, Git workflows, containerization (Docker, Kubernetes). • Hands-on with profiling & static analysis tools across all three languages. This is remote role for individuals located in the United States of America. Who We are... SmarTek21, founded in 2006, is an innovative digital transformation leader dedicated to empowering organizations through design-led, data-centric solutions. We believe that exceptional user experiences and intelligent data-driven insights are pivotal in shaping the future of business. At the heart of our approach is Design-Led Engineering, where we combine strategic design principles with cutting-edge technology to create tailored solutions that deliver significant business outcomes. Our commitment to accelerating digital transformation includes specialized expertise in Agile DevOps, Data Engineering and analytics, Testing Automation and support, and comprehensive Managed Application and Infrastructure Services. We’ve evolved from our consulting and development roots into a full-spectrum service provider, integrating advanced technologies like Generative AI (GenAI) to facilitate our clients' seamless, transformative digital journeys. A passion unites our dynamic team of technology visionaries and business strategists for innovation and excellence. At SmarTek21, you'll join a collaborative environment dedicated to shaping the digital landscape and driving impactful results for organizations worldwide. SmarTek21 is committed to fostering a diverse and inclusive environment. We encourage applications from individuals of all backgrounds and experiences.