Senior Software Engineer

About the Role:

We are looking for an experienced React Native Developer who can independently take charge of mobile app development as well as backend development. You will be responsible for building robust, scalable, and high-performance mobile applications from the ground up and developing/maintaining the backend systems to support these applications.

Key Responsibilities:

📱 Mobile App Development (Frontend)

• Design, develop, and maintain cross-platform mobile applications using React Native.
• Build pixel-perfect UIs across both Android and iOS platforms.
• Integrate RESTful APIs, third-party libraries, and SDKs.
• Optimize app performance, stability, and responsiveness.
• Implement best practices for code quality, testing, and maintainability.

💻 Backend Development

• Design and develop backend services and APIs using Node.js, Express.js, PHP or similar frameworks.
• Manage databases (e.g., MongoDB, PostgreSQL, Firebase, etc.).
• Implement authentication, authorization, data models, and RESTful API endpoints.
• Ensure secure, scalable, and efficient backend architecture.

🔧 General Responsibilities

• Own the end-to-end development lifecycle: planning, development, deployment, monitoring, and improvement.
• Collaborate with designers, product managers, and other developers to deliver high-quality features.
• Write clean, maintainable, and well-documented code.
• Debug and resolve technical issues across the stack.
• Stay up to date with the latest trends and technologies in mobile and backend development.

Requirements:

• 3+ years of experience in React Native mobile development.
• Strong experience with JavaScript, TypeScript, and React.
• Solid experience in backend development (Node.js, Express.js, or similar).
• Familiarity with databases (SQL or NoSQL).
• Experience with API integration, authentication (JWT, OAuth), and state management tools (Redux, Context API).
• Familiarity with mobile app deployment (App Store & Google Play).
• Good understanding of mobile performance and optimization techniques.
• Strong debugging and problem-solving skills.

Nice to Have:

• Experience with DevOps tools (Docker, CI/CD pipelines).
• Experience with Firebase, GraphQL, or serverless architecture.
• Knowledge of mobile analytics, push notifications, and crash reporting tools.
• Previous experience in startup or fast-paced environments.

What We Offer:

• Competitive salary and performance-based bonuses.
• Flexible working hours and remote work options.
• Opportunity to lead and grow with a product-focused team.
• Collaborative and supportive work environment.

About Us

1E9 Advisors is a technology company delivering strategy and solutions. We create and manage software products and provide support with related services across industries.

We have a deep understanding of energy and commodity markets, risk management, and technology, which we weave together to solve problems simply and innovatively. Our team builds modern, reliable systems that help businesses operate efficiently and make smarter decisions.

About the Role

We are looking for highly motivated Python Developer Interns who are eager to learn, take ownership, and contribute meaningfully from day one. This role provides a high-responsibility, high-learning environment where you'll work closely with experienced engineers to build real products and systems. Successful interns would be given a chance to continue in a full time role.

Important Note: This position is not open to applicants who are currently enrolled in full-time degree programs. This internship is designed to transition into a full-time role for successful candidates, so we are seeking candidates who are available for immediate full-time employment upon completion of the internship.

Key Responsibilities

• Develop and maintain backend applications using Python and Django
• Collaborate with the team to design, build, test, and deploy features
• Debug issues and participate in daily problem-solving
• Take ownership of assigned modules or tasks
• Write clear and clean code with documentation
• Contribute to internal discussions and product planning

What we’re looking for:

• Strong programming fundamentals, especially in Python (3.7+)
• Knowledge of data structures and algorithms
• Familiarity with Git and GitHub workflows
• Experience with general-purpose languages and basic web development
• Curiosity, analytical thinking, and attention to detail
• Clear communication and a proactive, collaborative mindset

Preferred Skills (Nice to Have)

• Django
• Django REST Framework (DRF) / FastAPI (for REST APIs)
• Frontend technologies: HTML5, CSS3, Bootstrap
• JavaScript frameworks (ReactJS / VueJS / AngularJS)
• Linux environment experience
• Shell scripting and Pandas
• Data visualization tools (D3.js / Observable)

What you’ll gain:

• Real-world experience solving critical problems in the energy space and enterprise application development
• Mentorship from an experienced team and continuous hands-on learning
• Ownership of live modules and contributions to production systems
• A fast-paced, collaborative, and impact-driven work culture
• Potential pathway to a full-time opportunity

JOB PURPOSE   

A Senior Associate Java WCS Technologist is considered as a senior contributor for complex modules of work by bringing deep core technology expertise and relevant business subject matter expertise to the table.  

JOB RESPONSIBILITIES   

• Sr. Associate, Technology plays a significant role during the design and implementation of the technological solution for our clients.   
• A Sr. Associate, Technology is involved in ensuring a quality technical design that satisfies the business requirements of the client.   

• A Sr. Associate, Technology is often involved in package evaluations and recommendations, communicating the technological details of the project to the business users and workshops with the clients. Sr. Associate, Technology also participates in gathering business requirements and assessing existing architectures and resources.  
• Sr. Associate, Technology provides leadership to the team by taking responsibility for a specific component or track of the project architecture.  By taking on this level of responsibility, a Sr. Associate, Technology spends more time overseeing the tasks required to implement a solution rather than performing the tasks directly.  This includes planning, estimation, resource management, issue resolution and quality assurance.  A Sr. Associate, Technology is also responsible for coordinating and communicating with the other tracks and disciplines involved in the project.   
• In performing the essential functions of this role, the work is fast-paced, moderately noisy and team-based.  Additionally, frequent overnight travel is required.  
• Prepares the technical design of the more complex technology components within the module (one or more of client/web presentation tier, server tier, data access and data model, integration component, package function customization)  
• Participates in and in some cases drives design reviews of other modules and provides insightful comments to improve the design quality and design conformance to standards  

• Assists the architect in articulating the pros and cons of using a certain technology stack/package or component or design pattern versus another to the clients and project team and drives selection of technologies, designs to come up with the optimal architecture  
• Implements slice of application (EAR) and proofs of concept (spike solution) to prove any new technologies or integration scenarios in the module  
• For package implementations, aids the Architect of the project to perform the gap analysis between business requirements and the package features and design the configuration, customizations, extensions, interfaces required to meet the requirements  
• Provides innovative solutions to project level technical issues  
• Critiques a design created by another designer and helps identify design and performance improvements  

• Interacts with a set of clients (client senior developers and architects) to create technology specifications from business requirements for one of the modules within the project  
• In some scenarios, collaborates with client developers to design, build, test and deploy the module components and integrate with the rest of the modules  
• Raises and drives to closure with the client any technical design and implementation issues in the module and also in the interfaces and interactions with other modules  
• Estimates the implementation and deployment of the module based on design architecture, testing strategy and overall project plan  
• Assists the architect in coming up with the overall estimates for the project along with any key risks and issues and their mitigation  

• Reports progress and issues to the Manager in a timely manner. In particular, to relay issues that might impact on quality or the ability to deliver to timescales or estimates  
• Works with team on the development of standards, processes and procedures related to application security, upgrade management, capacity planning, application deployment, performance monitoring/tuning, and failover and disaster recovery  
• Mentors the team on the best techniques to debug and troubleshoot design and implementation defects and issues  
• Shares point of view on technology stack, package and latest technology and business trends in one or more relevant areas (e.g. eCommerce, Content Management).  
• Documents the technical design using UML, suitable design patterns in the form of technical design narrative, object models, sequence diagrams, collaboration diagrams  

SKILL REQUIREMENTS  

Experience in: J2EE - Application Servers, Java - ORM, Java - Spring Framework, Core  

Java, SQL Development Languages, Java - Web, Presentation Frameworks, Java - Messaging  

Implementation, Java Web Services, Planning/ Execution & Tracking, Scoping and  

Estimating, Data Modeling, High Availability and Failover Applications, High Throughput / Transaction Application, Logical Architecture Design, OOAD and UML, Package / Vendor Selection, Performance / Capacity Planning, Application, Security.  

Ability to abstract detail into larger (repeatable) patterns, familiarity with user centered analysis and evaluation techniques   

Understanding of the project life cycle process to effectively be able to manage a sub- 

Business Knowledge:  Domain experience on Enterprise data warehouse would be a plus.  

Personal Attributes: a. Strong and innovative approach to problem solving and finding solutions b. Excellent communicator (written and verbal, formal and informal) c. Flexible and proactive/self-motivated working style with strong personal ownership of problem resolution d. Ability to multi-task under pressure and work independently with minimal supervision. e. Ability to prioritize when under pressure  

EXPERIENCE   

2-8 years  

EDUCATION  

Full Time Bachelor’s / Master’s degree (Science or Engineering preferred)  

WHAT WE'RE LOOKING FOR

•  Bachelors or masters in software engineering, Computer Science or other relevant disciplines
•  2+ years experience as a Back-End or Full Stack Developer with hands-on experience working with Python web application development
•  Strong Knowledge in Python v3.x Language
•  Experience in REST APIs with JSON
•  Error handling and Logging 
•  Any DB knowledge 
•  Knowledge on Sumo Logic log aggregation is a plus
• Must know how to produce high quality, “Clean” code that is performant, maintainable and secure

• 3+ years of work experience as a Python Developer. 
• Sound understanding and knowledge of Python and its ecosystem libraries like pandas and numpy. Also be able to write modular code and understand the python packaging system. 

• Experience on web crawling, scraping (Scrapy,BeautifulSoup, Selenium) and web application development using Django/Flask Framework. 
• Experience on Data-Science; exposure to Theanos, Tensorflow, Pytorch (preferable) 
• Exposure to data mining, Pyspark (preferable)