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ersg are working with a leading investor in Renewable Energy assets to hire a BESS-focused Engineer. This role will see the successful candidate join a market-leader to ensure the delivery of their growing BESS portfolio.Key responsibilities include;Being the lead person on technical developments in the Battery industry - supporting internal and external stakholders with technical comprehension of BESS.Identification and selection of BESS, PCS and EMS providers.Support colleagues through acquisition, JVs and project development stages from a technical perspective.Ensure FAT/SATs are completed.Ensuring delivery of projects in accordance with grid compliance.Candidates should have a strong background within BESS (upwards of three years), additionally any training with inverter manufacturers are a bonus. It is critical that candidates have experience of managing contractors such as EPCs.ersg are an equal opportunities employer; we are committed to promoting equality of opportunity for all job applicants. We do not discriminate against applicants on the basis of age, sex, race, disability, pregnancy, marital status, sexual orientation, gender reassignment or religious background; all decisions are based on merit.

【Commissioning Supervisor｜東京勤務｜外資系電力・データセンタープロジェクト】現在、外資系企業にて「Commissioning Supervisor」を募集しております。MV/LV設備のコミッショニング経験をお持ちの方、データセンター・発電所・変電設備・EPCプロジェクト経験者の方に非常にマッチするポジションです。■勤務地東京（プロジェクトに応じて出張あり）■業務内容・MV/LV設備のコミッショニングおよび試験業務・Site Acceptance Test (SAT)対応・サブコン・ベンダー管理・試験計画／レポート作成・不具合対応、トラブルシュート・安全管理／品質管理・顧客・社内チームとの技術調整・As Built図面管理■対象設備例・Switchgear・Protection Relay・UPS・配電盤・電力設備 ■応募要件・電気系バックグラウンド・コミッショニングまたは電気設備現場経験・英語でのコミュニケーション能力（読み書き・会話）・安全意識を持って現場対応できる方■ポイント・外資系グローバル環境・大規模データセンター案件あり・国際チームとの協業・今後拡大するデータセンター／電力インフラ市場ersg are an equal opportunities employer; we are committed to promoting equality of opportunity for all job applicants. We do not discriminate against applicants on the basis of age, sex, race, disability, pregnancy, marital status, sexual orientation, gender reassignment or religious background; all decisions are based on merit.

Test Engineer - SaaS (Web/Mobile) on Azure Location: Kristiansand or StavangerOne year ContractRole Test engineer responsible for validating quality, reliability, and security of commercial SaaS applications (web and mobile on iOS/Android) hosted on Azure. You'll work closely with developers, product owners, and domain experts to do hands-on testing and ensure features ship with confidence. Responsibilities Define and execute test plans for new features, regressions, and releases.Perform functional, integration, and end-to-end testing across web and mobile apps.Track, reproduce, and clearly document defects; drive issues to resolution with the team.Support non-functional testing: performance, reliability, and basic security validation.Participate in reviews (requirements, user stories, acceptance criteria) to improve testability.Contribute to test documentation (test cases, checklists, release readiness notes). Qualifications5+ years (or equivalent) testing production software in agile teams.Experience testing commercial web applications and/or mobile apps (iOS/Android).Familiar with Azure-based systems and environments (deployments, logs, monitoring).Detail-oriented communicator who can collaborate across technical and non-technical roles.Good SQL skills and confidence working with data-heavy systems.Hands-on test automation experience, API testing tools. Nice to have Experience with SAST/DAST outputs and verification of fixes (or security-minded testing).Performance testing experience (e.g., JMeter/k6) and observability tooling.Domain familiarity: drilling & wells, WITSML, Cognite/CDF, and/or OSDU.ersg are an equal opportunities employer; we are committed to promoting equality of opportunity for all job applicants. We do not discriminate against applicants on the basis of age, sex, race, disability, pregnancy, marital status, sexual orientation, gender reassignment or religious background; all decisions are based on merit.

What will you be doing?As a Project Engineer, you'll support the successful delivery of substation projects, ensuring all engineering activities are completed safely, accurately, and to the highest standards.With hands-on experience, strong problem-solving skills, and the ability to work effectively with project managers, site teams, and external stakeholders, you will:Oversee site supervisors, craft teams, and subcontractors on a daily basisCommunicate regularly with client site representatives and attend progress meetingsMonitor and manage project costsPrepare method statements, work instructions, and risk assessmentsProvide information for contract status reports and other client deliverablesMaintain accurate project records to support claims and commercial reportingPlan and coordinate labour, plant, and materials for substation worksLiaise with procurement to ensure timely availability of equipment and materialsEnsure compliance with relevant standards and company proceduresManage health and safety across site teams and subcontractorsWhat you'll bring:Knowledge of Construction and Health & Safety regulationsSite supervision experience on high-voltage substation projects (132kV and above preferred)Experience managing technical aspects of substation construction, installation, and commissioningElectrical BackgroundFamiliarity with civil and electrical worksExperience managing subcontractors and recording measurementsersg are an equal opportunities employer; we are committed to promoting equality of opportunity for all job applicants. We do not discriminate against applicants on the basis of age, sex, race, disability, pregnancy, marital status, sexual orientation, gender reassignment or religious background; all decisions are based on merit.

ersg are supporting a client in their search for a Solar O&M Technician to service a portfolio of sites including Commercial & Industrial properties, and utility-scale solar farms (up to 5MW). The role will see you covering Norwich and the surrounding area.Applicants should have experience of fault-finding and servicing inverters, SCADA, and MODBUS (TCP/IP). The need to interrogate comms issues is critical in this role. There is regular overtime available in this position, paying x1.5 for out of hours work and x2.0 on Sundays.The ideal applicant will have C&G 2391 Testing & Inspection, 18th Edition, and NVQ Level 3 in Electrical Installations, in addition to experience of working in the UK Solar O&M industry.ersg are an equal opportunities employer; we are committed to promoting equality of opportunity for all job applicants. We do not discriminate against applicants on the basis of age, sex, race, disability, pregnancy, marital status, sexual orientation, gender reassignment or religious background; all decisions are based on merit.