We look forward to your joining.
Join our team and help yourself achieve success at work.
Introduction to iRayBattery
iRayBattery (fully named Shenzhen iRay Battery Technology Co., Ltd.) was established in 2012 as a custom factory dedicated to the R&D, production, and sales of lithium-ion batteries. With a state-of-the-art facility spanning over 10,000 square meters and a team of more than 300 employees, including 32 R&D professionals, iRayBattery is committed to delivering high-quality energy solutions. Our products have obtained multiple certifications and patents, supported by more than 1,000 domestic and international customers. The team has extensive experience in developing and manufacturing customized batteries for specialized applications.
Company Philosophy:
Precision manufacturing, customer first, continuous improvement.
Company Vision:
To create value for customers, generate benefits for the company, and become a technology-driven, innovative, and socially responsible lithium battery manufacturing enterprise.
Address
Explore job opportunities in China
Shenzhen Marketing Center:
Room 2012, Block B, Ganlanpengyuan, No. 3032 Caitian Road, Xintian Community, Huafu Subdistrict, Futian District, Shenzhen, China
Huizhou Manufacturing Plant:
No. 3-11, East Xinke Avenue, Industrial Zone, Tongqiao Town, Zhongkai High-Tech Zone, Huizhou, Guangdong, China
Benefits of Working at iRaybattery
Personal Development
We have a well-established employee training and promotion system, which includes both technical and management career tracks. If you pursue a management path, you can grow to become the CEO of the company. If you choose the technical route, you can develop into a technical director. We offer professional skill training every year, with opportunities for cross-departmental rotation to support compound development.
Comfortable Work Environment
Our open-plan office space is equipped with ergonomic chairs, balancing efficiency and health. We implement a flat management structure and host a monthly "Innovation Proposal Day" and cross-department project teams. We organize outdoor team-building activities at least twice a year. Our break rooms provide healthy snacks throughout the day, and each department has its own dedicated health fund.
Substantial Salary
We offer a salary that is competitive within the top 90th percentile of the industry (with an annual salary review). All employees are covered by social insurance and housing fund. Employees who have been with the company for 8 years are eligible for the profit-sharing plan. Additionally, we have a "Value Recognition Award Pool" to provide instant rewards for breakthrough contributions (up to 10,000 yuan per individual reward).
Flexible Work System
We operate on a "4+1" hybrid work model (4 days in the office/1 day remote), with core working hours from 8:30 AM to 6:00 PM. Employees receive 5 days of flexible leave per year. We also have a "Focus Period" system (no meetings from 2:00 PM to 4:00 PM daily) to ensure deep work time. For special needs (such as relocation across cities or family care), flexible working arrangements of up to 1 month can be requested.
Job Openings
If you meet the requirements for the following positions. please submit your resume to us. We look forward to having you on board.
Senior Market Analyst
Job Description:
1. Industry Analysis and Forecasting: Conduct long-term tracking of overseas lithium-ion battery applications and the energy storage industry. Analyze market dynamics based on policies, supply, and demand to forecast market trends and scale. Provide regular reports to management to support strategic investment decisions.
2. Customer Analysis: Conduct comprehensive scanning of business opportunities in overseas markets, identify key regions and target customers, and develop differentiated business strategies tailored to different customer types.
3. Competitive Analysis: Collect and analyze information on major competitors’ business operations, personnel, and product offerings in overseas markets. Assess the company’s competitive strengths and weaknesses, and develop strategies to enhance market competitiveness.
4. New Business Opportunity Development: Continuously monitor industry trends to identify new application scenarios, business models, and technology opportunities. Promote pilot projects to uncover new growth areas for the company.
5. Other Responsibilities: Complete other market analysis tasks assigned by the leadership team.
Qualifications:
1.Bachelor’s degree or above, preferably in fields related to power engineering such as Physical Chemistry, Power Systems and Automation, Power Electronics, Electrical Equipment Installation, or Electrical Automation.
2.Minimum of 5 years of experience in the power industry, with familiarity in renewable energy and energy storage markets.
3.Experience in power system planning or development of power-related products is a plus.
4.Strong communication skills and the ability to perform well under pressure.
Senior Sales Executive
Job Description:
1.Understand and embrace the company culture, management regulations, and all sales-related policies.
2. Responsible for market development and sales of the company’s lithium-ion battery products; execute sales strategies to achieve business targets.
3. Maintain strong client relationships and manage sales projects effectively; provide high-quality services to clients and establish long-term cooperation.
4.Participate in industry exhibitions, receive and visit clients; establish effective communication based on client needs and provide customized product solutions.
5. Handle customer orders and follow up on after-sales services.
6. Collect industry information, track market trends, and regularly provide market analysis and sales forecasts.
Qualifications:
1.Aged 26–36; Associate degree or above in Marketing, Electronics, Communications, Mechanical Automation, Chemistry, or related fields.
2.At least 3 years of experience in industrial product sales (experience in lithium battery industry is preferred), with proven ability in client development, maintenance, and follow-up. Strong market insight, customer service orientation, sales negotiation, and communication skills.
3.Proficient in Microsoft Excel, Word, PowerPoint, and Windows.
4.Honest, responsible, eager to learn, and with a strong sense of integrity.
Sales Representative
Job Description:
1.Familiar with lithium battery products (including 3C digital cells and PACK solutions), with relevant sales experience.
2. Responsible for exploring new markets, developing new clients, and expanding the product sales network.
3. Collect and analyze market information, with the ability to independently develop customers.
4.Manage and maintain customer relationships and develop long-term strategic cooperation plans.
5. Capable of brand promotion and marketing strategy planning.
Qualifications:
1.Associate degree or above; candidates with 2+ years of sales experience in the lithium battery industry are preferred.
2.Excellent skills in communication, coordination, business negotiation, and market expansion; strong analytical and summarizing abilities, and able to perform well under pressure.
3.Possess unique analytical thinking, strong interpersonal communication skills, a keen eye for business opportunities, and exceptional charisma.
4.Strong customer service awareness and team spirit.
Energy Storage Sales Representative
Job Description:
1.Develop sales strategies, execute sales activities, and achieve assigned sales targets.
2. Build and maintain customer relationships within the battery-related industries in the assigned territory; conduct market analysis and planning; drive project execution to meet sales goals.
3. Explore new customers and markets in the power industry within the assigned region, and establish long-term, stable relationships.
4.Proactively identify, analyze, and guide customer needs.
5. Achieve annual targets related to regional market share, invoiced energy volume, and payment collection.
Qualifications:
1.Bachelor's degree in Power Electronics, Marketing, or related fields from an accredited university (preferably from a key university). Strong skills in market analysis, sales, and promotion.
2.At least 3 years of experience in the new energy industry in regions such as Africa, West Asia, Central Asia, or South Asia, with a well-established network among local distributors or clients.
3.Strong analytical, problem-solving, communication, and coordination skills.
4.Highly motivated, hardworking, willing to travel frequently. Candidates handling overseas clients must be fluent in English.
Senior Cell Process Engineer
Job Description:
1.Act as the owner of mass production, taking the lead in solving technical issues, improving yield and efficiency, and reducing manufacturing costs.
2. Identify potential failure modes in the production process and implement effective control measures; define in-process product specifications.
3.Participate in the development of new products and new processes; evaluate manufacturability and lead the transition to mass production.
4.Validate manufacturability of new processes, new materials, new production lines, and new equipment during the mass production stage.
5. Maintain and update production system documentation and related mass production files (e.g., BOM, CP, PFC, etc.).
Qualifications:
1.Bachelor’s degree or above in Electrochemistry, New Energy Materials and Devices, Materials Chemistry, Automation, Mechanical Engineering, or related fields.
2.Over 5 years of experience in lithium battery or large-scale automated manufacturing industries, with a strong background in process troubleshooting and improvement.
3.Familiar with automated control and equipment development; proficient in basic project management principles.
4.Strong engineering data analysis skills; proficient in Six Sigma, DOE, 8D, and other engineering tools and methodologies.
5.Excellent communication, coordination, and logical thinking skills; team management experience in a technical role is a plus.
Senior Process Engineer
Job Description:
1.Act as the owner of mass production, taking overall responsibility for resolving technical issues, improving yield and production efficiency, and reducing manufacturing costs.
2.Identify potential failure modes during the manufacturing process and implement effective control methods; define in-process product specifications.
3.Participate in new product and process development; assess manufacturability and lead the transition to mass production.
4.Validate the manufacturability of new processes, materials, production lines, and equipment during mass production.
5. Maintain and update production system documentation and mass production-related files (such as MES, CP, SOP, etc.).
Qualifications:
1.Bachelor’s degree or above in Electrochemistry, Automation, Mechanical Engineering, or related fields.
2.Over 5 years of hands-on process engineering experience in large-scale manufacturing; background in automotive OEMs is a plus.
3.Familiarity with tolerance chain analysis, laser welding, or assembly processes is preferred.
4.Strong data analysis skills; proficient in Six Sigma, DOE, 8D, and other engineering methodologies.
5.Excellent communication, coordination, and logical thinking skills; experience in leading technical teams is preferred.
Process Simulation Engineer
Job Description:
1.Responsible for simulation analysis and optimization of mechanical structures and mechanisms in battery cell and system manufacturing processes; use simulation tools to resolve process challenges and develop key process know-how models (e.g., electrode calendering, slitting, sheet cutting, winding, sealing, casing, welding, etc.).
2.Develop and execute test plans for simulation model benchmarking, and calibrate simulation models based on experimental data.
3.Develop automated simulation applications (APPs) for process engineering, and lead related promotion, training, and internal implementation.
4.Build, upgrade, and maintain the lithium battery process know-how model library.
5. Establish simulation systems for battery manufacturing processes, including workflows, standards, report templates, and supporting hardware/software infrastructure.
6. Track and evaluate emerging simulation technologies worldwide, and lead their introduction, development, and application within the company.
Qualifications:
1.Master’s degree or above in Vehicle Engineering, Mechanical Manufacturing, Materials Science, Mechanics, or related fields.
2.At least 2 years of experience in mechanical or structural simulation; background in mechanical structure or mechanism simulation preferred.
3.Proficient in at least one CAE simulation software such as Abaqus, HyperWorks, Nastran, LS-DYNA, Ncode, Ansys, etc.
4.Expertise in at least one of the following simulation areas: welding, assembly, sealing, bolted joint, creep, thermo-fluid-structure coupling, or vibration fatigue analysis.
5.Solid foundation in finite element theory, theoretical mechanics, strength of materials, vibration mechanics, elasticity, fatigue mechanics, and mechanical design.
5.CET-6 or above in English; capable of reading and writing technical documents in English, with basic communication skills.
Solid-State Battery Cell Development Engineer
Job Description:
1.Lead the development of solid-state battery technical solutions; evaluate cell systems and perform failure analysis to define safety and performance boundaries.
2.Drive implementation of solid-state battery cell designs; coordinate cell development requirements (performance, manufacturability, quality, safety, reliability, etc.) to ensure successful application and product delivery.
3.Serve as the technical interface for solid-state battery cell development, responsible for translating front-end product requirements into overall technical solutions and supporting technical issue resolution.
4.Participate in the technology roadmap planning for solid-state battery products, integrating multiple dimensions including electrochemical systems, structural design, and application boundaries to define competitive product iteration paths.
Qualifications:
1.Master’s degree or above in a science or engineering-related discipline.
2.3+ years of experience in cell development or product R&D preferred.
3.Familiar with mainstream battery chemistries, cell structures, and manufacturing processes.
4.Proficient in battery testing, characterization, and failure analysis methods, with strong skills in data analysis and problem-solving.
5.Possess a systems engineering mindset; capable of solving complex technical challenges and driving cross-functional collaboration.
Polymer Battery Electrolyte Materials Engineer
Job Description:
1.Design and synthesize high lithium-ion conductivity polymer electrolytes and study lithium-ion transport mechanisms.
2.Develop solid-state or gel polymer electrolytes tailored to lithium battery performance requirements.
3.Develop functional fillers and plasticizers for polymer electrolytes to improve application performance.
4.Engineer polymer electrolytes to enhance interfacial compatibility with cathode and anode materials.
5.Develop lithium-metal or lithium-free anode technologies for polymer battery systems.
6.Optimize membrane processing techniques and promote engineering scalability.
7.Design high energy density polymer solid-state or gel battery structures and validate through engineering implementation.
8.Monitor cutting-edge technologies in polymer electrolyte materials and applications.
Qualifications:
1.Master’s degree or above (including part-time programs) in Chemistry, Materials Science, Physics, Mechanical Engineering, or related disciplines. Strong logical thinking and communication skills; experience leading material development and industrialization projects is preferred.
2.Proficient in polymer chemistry and synthesis techniques; able to independently conduct polymer design and synthesis work.
3.Familiar with performance requirements for polymer electrolytes; capable of independently developing solutions to current application bottlenecks and key challenges.
4.Knowledge of polymer electrolyte membrane and electrode/cell engineering development.
5.Understanding of lithium-metal/silicon anode materials and interfacial behavior.
6.Solid grasp of fundamental chemical and electrochemical principles, with experience in testing and characterization; capable of developing novel characterization methods as needed.
7.Strong data analysis skills and ability to draw reliable conclusions based on experimental results.
8.Excellent cross-functional collaboration and communication skills.
Battery Pack Process Engineer
Job Description:
1.Lead the design and development of process engineering for new projects, including manufacturing process planning, manufacturability evaluation, and production workflow design.
2.Prepare process routes, flowcharts, PFMEA (Process Failure Mode and Effects Analysis), and work instructions for new projects.
3.Summarize issues arising during pilot production, lead trial production meetings, and ensure timely issue resolution.
4.Conduct DOE (Design of Experiments) validation for new project manufacturing processes, as well as process capability analysis and optimization.
Qualifications:
1.Bachelor’s degree or above.
2.Minimum 2 years of experience in process development/maintenance or industrial engineering.
3.Familiar with process development and management workflows, and capable of optimizing manufacturing processes.
4.Proficient in at least one of the following CAD software: 2D AutoCAD, 3D UG, SolidWorks, Pro/E, or CATIA.
5.Able to independently develop and validate new processes and technologies using DOE methodology and perform result analysis.
Quality Engineer
Job Description:
1.Responsible for quality management and control during the mass production process of battery cells.
2.Lead the resolution of on-site quality issues, risk identification, process audits, and internal quality inspections.
3.Drive continuous improvement and standardization to ensure quality in both manufacturing processes and final product shipments.
4.Reduce quality-related costs and achieve company and departmental KPI targets.
Qualifications:
1.Bachelor’s degree or above in a STEM field such as Chemical Engineering, Electrical/Electronic Engineering, Mechanical Design, Automation, Automotive Technology, or Statistics.
2.Knowledge of FA (Failure Analysis) procedures and battery operating principles; familiar with TS16949 and QC Seven Tools.
3.Proficient in fault analysis and mechanical failure analysis methods; experienced in 8D problem-solving methodology.
4.Work experience in the lithium battery industry or large-scale manufacturing environments; strong communication skills.
5.Good interpersonal and communication abilities, with strong learning agility, adaptability, and stress resilience.
