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Senior Java Software Engineer
San Francisco, CA

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Job Description

Sr. Java Software Engineer - Full Stack

Blackstone Technology Group is hiring a full-time mid-level or Senior Full Stack Java Software Engineer to join our Trellis Team local to San Francisco, CA. Great growth opportunity to help build an enterprise level software serving the energy market. As a member of a tight knit and high-performing team, you will be integral to our product, client, and team successes. You will interact with all levels of the project teams including users, analysts, developers, architects, and management.

Trellis Energy Background:

Trellis Energy ( is a market disrupting San Francisco-based technology startup bringing energy companies into the 21st century through advanced technology. Our products and solutions support the following domains:

* Trellis ETMS: management of the gathering, storage, trading, and shipping of Natural Gas
* Trellis Cyber: proactive protection and defense of critical ICS/SCADA operational networks
* Trellis Grid of Things: enhancement of operational and strategic insight into client Grid networks through real time data ingestion, processing, and predictive analytics.


* Full stack development, enhancement, customization, support, and maintenance of the many functions and features of a large and complex business system.
* Learn the Trellis software system architecture, frameworks, and coding standards.
* Participate and/or lead design and information flow sessions; conduct solution presentations.
* Create design specifications based on business and technical requirements.
* Develop, Enhance, Customize, Support, and Maintain code as per design and coding standards.
* Develop, update, and maintain unit test cases.
* Collaborate with the requirements team for product enhancements and implementations.
* Have your voice heard! Present innovative ideas for product improvements based on business understanding.
* Provide technical guidance and mentor other developers within the team.


* 7+ years in full stack and/or Java development, architecture, framework, and engineering.
* Undergraduate degree in Computer Science, MIS, Business, or other related Engineering fields
* Java/JEE, Spring (Core, MVC, AOP, Security), JPA/Hibernate
* Experience with web based and object oriented design frameworks, principles, and standards.
* Relational Databases such as Oracle or MySQL.
* Application servers such as Tomcat, JBoss, Apache, WebLogic.
* JUnits and JavaDocs
* Front end abilities with HTML, CSS, JavaScript, XML, JSP, JSTL, etc.
* Application development on Windows, Linux, Unix platforms
* IDE tools such as Eclipse or IntelliJ
* Experience with full SDLC processes and methodologies such as Agile
* Experience working in continuous integration and continuous deployment systems (CICD)
* Ability to think creatively and work independently on complex development tasks
* Proven ability to solve complex technical and business problems
* Must have strong work ethics, career goals, and accomplishments
* Strong listening, written, and verbal skills


* Knowledge and experience in Natural Gas industry
* Experience with UML artifacts for requirements, design, modeling, and testing
* Recent development experience with a software product company

Blackstone offers a comprehensive compensation and benefits package; the company pays 100% of Employee's health insurance premiums.

The Blackstone name was chosen very carefully. A black-stone is a cutting tool used to shape and polish a rough diamond into brilliance. True to the concept behind the formation of our name, it remains Blackstone's commitment to help our employees carve out and forge the best possible future. At Blackstone, by focusing on creative, efficient, and future-focused information technology solutions, we help to shape innovative individuals into industry leaders. Are you a Diamond in the Rough?


About Blackstone Technology Group

Blackstone Technology Group is a privately-held global software technology and business consulting firm. Founded in 1998 and headquartered in San Francisco CA, Blackstone has offices in Washington DC, Denver CO, Houston TX, and Colorado Springs CO.

Blackstone Federal, Blackstone Talent and Trellis Energy help our clients address industry challenges, achieve cost containment, and transform their business models within their respective commercial and public service marketplaces. Blackstone has garnered an impressive track record of delivering successful results, with a noteworthy client list that includes many Fortune 1000 businesses and US Federal Government and California State Agencies.

Blackstone Technology Group is an EOE of Minorities/Females/Vets/Disability. In compliance with federal law, all persons hired will be required to verify identity and eligibility to work in the United States and to complete the required employment eligibility verification document form upon hire. Blackstone Technology Group participates in E-Verify. We will provide the Social Security Administration, and, if necessary, the Department of Homeland Security, with the information for each new employee's I-9 to confirm work authorization. Pursuant to the San Francisco Fair Chance Ordinance, Blackstone Technology Group will consider for employment qualified applicants with arrest and conviction records. If you would like to work for an innovative, forward thinking company that possesses a multi-talented, diverse, and thriving professional community, we would love to hear from you!

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